chore: initial public snapshot for github upload

llm-gateway-competitors/litellm-wheel-src/litellm/proxy/pass_through_endpoints/architecture.md

@@ -0,0 +1,71 @@
+# Pass-Through Endpoints Architecture
+
+## Why Pass-Through Endpoints Transform Requests
+
+Even "pass-through" endpoints must perform essential transformations. The request **body** passes through unchanged, but:
+
+```mermaid
+sequenceDiagram
+    participant Client
+    participant Proxy as LiteLLM Proxy
+    participant Provider as LLM Provider
+
+    Client->>Proxy: POST /vertex_ai/v1/projects/.../generateContent
+    Note over Client,Proxy: Headers: Authorization: Bearer sk-litellm-key
+    Note over Client,Proxy: Body: { "contents": [...] }
+    
+    rect rgb(240, 240, 240)
+        Note over Proxy: 1. URL Construction
+        Note over Proxy: Build regional/provider-specific URL
+    end
+    
+    rect rgb(240, 240, 240)
+        Note over Proxy: 2. Auth Header Replacement
+        Note over Proxy: LiteLLM key → provider credentials
+    end
+
+    rect rgb(240, 240, 240)
+        Note over Proxy: 3. Extra Operations
+        Note over Proxy: • x-pass-* headers (strip prefix, forward)
+        Note over Proxy: • x-litellm-tags → metadata
+        Note over Proxy: • Guardrails (opt-in)
+        Note over Proxy: • Multipart form reconstruction
+    end
+    
+    Proxy->>Provider: POST https://us-central1-aiplatform.googleapis.com/...
+    Note over Proxy,Provider: Headers: Authorization: Bearer ya29.google-oauth...
+    Note over Proxy,Provider: Body: { "contents": [...] } ← UNCHANGED
+    
+    Provider-->>Proxy: Response (streaming or non-streaming)
+
+    rect rgb(240, 240, 240)
+        Note over Proxy: 4. Response Handling (async)
+        Note over Proxy: • Collect streaming chunks for logging
+        Note over Proxy: • Cost injection (if enabled)
+        Note over Proxy: • Parse response → calculate cost → log
+    end
+    
+    Proxy-->>Client: Response (unchanged)
+```
+
+## Essential Transformations
+
+- **URL Construction** - Build correct provider URL (e.g., regional endpoints for Vertex AI, Bedrock)
+- **Auth Header Replacement** - Swap LiteLLM virtual key for actual provider credentials
+
+## Extra Operations
+
+| Operation | Description |
+|-----------|-------------|
+| `x-pass-*` headers | Strip prefix and forward (e.g., `x-pass-anthropic-beta` → `anthropic-beta`) |
+| `x-litellm-tags` header | Extract tags and add to request metadata for logging |
+| Streaming chunk collection | Collect chunks async for logging after stream completes |
+| Multipart form handling | Reconstruct multipart/form-data requests for file uploads |
+| Guardrails (opt-in) | Run content filtering when explicitly configured |
+| Cost injection | Inject cost into streaming chunks when `include_cost_in_streaming_usage` enabled |
+
+## What Does NOT Change
+
+- Request body
+- Response body
+- Provider-specific parameters

llm-gateway-competitors/litellm-wheel-src/litellm/proxy/pass_through_endpoints/common_utils.py

@@ -0,0 +1,16 @@
+from fastapi import Request
+
+
+def get_litellm_virtual_key(request: Request) -> str:
+    """
+    Extract and format API key from request headers.
+    Prioritizes x-litellm-api-key over Authorization header.
+
+
+    Vertex JS SDK uses `Authorization` header, we use `x-litellm-api-key` to pass litellm virtual key
+
+    """
+    litellm_api_key = request.headers.get("x-litellm-api-key")
+    if litellm_api_key:
+        return f"Bearer {litellm_api_key}"
+    return request.headers.get("Authorization", "")

llm-gateway-competitors/litellm-wheel-src/litellm/proxy/pass_through_endpoints/jsonpath_extractor.py

@@ -0,0 +1,94 @@
+"""
+JSONPath Extractor Module
+
+Extracts field values from data using simple JSONPath-like expressions.
+"""
+
+from typing import Any, List, Union
+
+from litellm._logging import verbose_proxy_logger
+
+
+class JsonPathExtractor:
+    """Extracts field values from data using JSONPath-like expressions."""
+
+    @staticmethod
+    def extract_fields(
+        data: dict,
+        jsonpath_expressions: List[str],
+    ) -> str:
+        """
+        Extract field values from data using JSONPath-like expressions.
+
+        Supports simple expressions like:
+        - "query" -> data["query"]
+        - "documents[*].text" -> all text fields from documents array
+        - "messages[*].content" -> all content fields from messages array
+
+        Returns concatenated string of all extracted values.
+        """
+        extracted_values: List[str] = []
+
+        for expr in jsonpath_expressions:
+            try:
+                value = JsonPathExtractor.evaluate(data, expr)
+                if value:
+                    if isinstance(value, list):
+                        extracted_values.extend([str(v) for v in value if v])
+                    else:
+                        extracted_values.append(str(value))
+            except Exception as e:
+                verbose_proxy_logger.debug(
+                    "Failed to extract field %s: %s", expr, str(e)
+                )
+
+        return "\n".join(extracted_values)
+
+    @staticmethod
+    def evaluate(data: dict, expr: str) -> Union[str, List[str], None]:
+        """
+        Evaluate a simple JSONPath-like expression.
+
+        Supports:
+        - Simple key: "query" -> data["query"]
+        - Nested key: "foo.bar" -> data["foo"]["bar"]
+        - Array wildcard: "items[*].text" -> [item["text"] for item in data["items"]]
+        """
+        if not expr or not data:
+            return None
+
+        parts = expr.replace("[*]", ".[*]").split(".")
+        current: Any = data
+
+        for i, part in enumerate(parts):
+            if current is None:
+                return None
+
+            if part == "[*]":
+                # Wildcard - current should be a list
+                if not isinstance(current, list):
+                    return None
+
+                # Get remaining path
+                remaining_path = ".".join(parts[i + 1 :])
+                if not remaining_path:
+                    return current
+
+                # Recursively evaluate remaining path for each item
+                results = []
+                for item in current:
+                    if isinstance(item, dict):
+                        result = JsonPathExtractor.evaluate(item, remaining_path)
+                        if result:
+                            if isinstance(result, list):
+                                results.extend(result)
+                            else:
+                                results.append(result)
+                return results if results else None
+
+            elif isinstance(current, dict):
+                current = current.get(part)
+            else:
+                return None
+
+        return current

llm-gateway-competitors/litellm-wheel-src/litellm/proxy/pass_through_endpoints/llm_provider_handlers/anthropic_passthrough_logging_handler.py

@@ -0,0 +1,619 @@
+import json
+from datetime import datetime
+from typing import TYPE_CHECKING, Any, List, Optional, Sequence, Union, cast
+
+import httpx
+
+import litellm
+from litellm._logging import verbose_proxy_logger
+from litellm.litellm_core_utils.litellm_logging import Logging as LiteLLMLoggingObj
+from litellm.llms.anthropic import get_anthropic_config
+from litellm.llms.anthropic.chat.handler import (
+    ModelResponseIterator as AnthropicModelResponseIterator,
+)
+from litellm.proxy._types import PassThroughEndpointLoggingTypedDict
+from litellm.proxy.auth.auth_utils import get_end_user_id_from_request_body
+from litellm.types.passthrough_endpoints.pass_through_endpoints import (
+    PassthroughStandardLoggingPayload,
+)
+from litellm.types.utils import LiteLLMBatch, ModelResponse, TextCompletionResponse
+
+if TYPE_CHECKING:
+    from litellm.types.passthrough_endpoints.pass_through_endpoints import EndpointType
+
+    from ..success_handler import PassThroughEndpointLogging
+else:
+    PassThroughEndpointLogging = Any
+    EndpointType = Any
+
+
+class AnthropicPassthroughLoggingHandler:
+    @staticmethod
+    def anthropic_passthrough_handler(
+        httpx_response: httpx.Response,
+        response_body: dict,
+        logging_obj: LiteLLMLoggingObj,
+        url_route: str,
+        result: str,
+        start_time: datetime,
+        end_time: datetime,
+        cache_hit: bool,
+        request_body: Optional[dict] = None,
+        **kwargs,
+    ) -> PassThroughEndpointLoggingTypedDict:
+        """
+        Transforms Anthropic response to OpenAI response, generates a standard logging object so downstream logging can be handled
+        """
+        # Check if this is a batch creation request
+        if "/v1/messages/batches" in url_route and httpx_response.status_code == 200:
+            # Get request body from parameter or kwargs
+            request_body = request_body or kwargs.get("request_body", {})
+            return AnthropicPassthroughLoggingHandler.batch_creation_handler(
+                httpx_response=httpx_response,
+                logging_obj=logging_obj,
+                url_route=url_route,
+                result=result,
+                start_time=start_time,
+                end_time=end_time,
+                cache_hit=cache_hit,
+                request_body=request_body,
+                **kwargs,
+            )
+
+        model = response_body.get("model", "")
+        anthropic_config = get_anthropic_config(url_route)
+        litellm_model_response: ModelResponse = anthropic_config().transform_response(
+            raw_response=httpx_response,
+            model_response=litellm.ModelResponse(),
+            model=model,
+            messages=[],
+            logging_obj=logging_obj,
+            optional_params={},
+            api_key="",
+            request_data={},
+            encoding=litellm.encoding,
+            json_mode=False,
+            litellm_params={},
+        )
+
+        kwargs = AnthropicPassthroughLoggingHandler._create_anthropic_response_logging_payload(
+            litellm_model_response=litellm_model_response,
+            model=model,
+            kwargs=kwargs,
+            start_time=start_time,
+            end_time=end_time,
+            logging_obj=logging_obj,
+        )
+
+        return {
+            "result": litellm_model_response,
+            "kwargs": kwargs,
+        }
+
+    @staticmethod
+    def _get_user_from_metadata(
+        passthrough_logging_payload: PassthroughStandardLoggingPayload,
+    ) -> Optional[str]:
+        request_body = passthrough_logging_payload.get("request_body")
+        if request_body:
+            return get_end_user_id_from_request_body(request_body)
+        return None
+
+    @staticmethod
+    def _create_anthropic_response_logging_payload(
+        litellm_model_response: Union[ModelResponse, TextCompletionResponse],
+        model: str,
+        kwargs: dict,
+        start_time: datetime,
+        end_time: datetime,
+        logging_obj: LiteLLMLoggingObj,
+    ):
+        """
+        Create the standard logging object for Anthropic passthrough
+
+        handles streaming and non-streaming responses
+        """
+        try:
+            # Get custom_llm_provider from logging object if available (e.g., azure_ai for Azure Anthropic)
+            custom_llm_provider = logging_obj.model_call_details.get(
+                "custom_llm_provider"
+            )
+
+            # Prepend custom_llm_provider to model if not already present
+            model_for_cost = model
+            if custom_llm_provider and not model.startswith(f"{custom_llm_provider}/"):
+                model_for_cost = f"{custom_llm_provider}/{model}"
+
+            response_cost = litellm.completion_cost(
+                completion_response=litellm_model_response,
+                model=model_for_cost,
+                custom_llm_provider=custom_llm_provider,
+            )
+
+            kwargs["response_cost"] = response_cost
+            kwargs["model"] = model
+            passthrough_logging_payload: Optional[PassthroughStandardLoggingPayload] = (  # type: ignore
+                kwargs.get("passthrough_logging_payload")
+            )
+            if passthrough_logging_payload:
+                user = AnthropicPassthroughLoggingHandler._get_user_from_metadata(
+                    passthrough_logging_payload=passthrough_logging_payload,
+                )
+                if user:
+                    kwargs.setdefault("litellm_params", {})
+                    kwargs["litellm_params"].update(
+                        {"proxy_server_request": {"body": {"user": user}}}
+                    )
+
+            # pretty print standard logging object
+            verbose_proxy_logger.debug(
+                "kwargs= %s",
+                json.dumps(kwargs, indent=4, default=str),
+            )
+
+            # set litellm_call_id to logging response object
+            litellm_model_response.id = logging_obj.litellm_call_id
+            litellm_model_response.model = model
+            logging_obj.model_call_details["model"] = model
+            if not logging_obj.model_call_details.get("custom_llm_provider"):
+                logging_obj.model_call_details[
+                    "custom_llm_provider"
+                ] = litellm.LlmProviders.ANTHROPIC.value
+            return kwargs
+        except Exception as e:
+            verbose_proxy_logger.exception(
+                "Error creating Anthropic response logging payload: %s", e
+            )
+            return kwargs
+
+    @staticmethod
+    def _handle_logging_anthropic_collected_chunks(
+        litellm_logging_obj: LiteLLMLoggingObj,
+        passthrough_success_handler_obj: PassThroughEndpointLogging,
+        url_route: str,
+        request_body: dict,
+        endpoint_type: EndpointType,
+        start_time: datetime,
+        all_chunks: List[str],
+        end_time: datetime,
+    ) -> PassThroughEndpointLoggingTypedDict:
+        """
+        Takes raw chunks from Anthropic passthrough endpoint and logs them in litellm callbacks
+
+        - Builds complete response from chunks
+        - Creates standard logging object
+        - Logs in litellm callbacks
+        """
+
+        model = request_body.get("model", "")
+        # Check if it's available in the logging object
+        if (
+            not model
+            and hasattr(litellm_logging_obj, "model_call_details")
+            and litellm_logging_obj.model_call_details.get("model")
+        ):
+            model = cast(str, litellm_logging_obj.model_call_details.get("model"))
+
+        complete_streaming_response = (
+            AnthropicPassthroughLoggingHandler._build_complete_streaming_response(
+                all_chunks=all_chunks,
+                litellm_logging_obj=litellm_logging_obj,
+                model=model,
+            )
+        )
+        if complete_streaming_response is None:
+            verbose_proxy_logger.error(
+                "Unable to build complete streaming response for Anthropic passthrough endpoint, not logging..."
+            )
+            return {
+                "result": None,
+                "kwargs": {},
+            }
+        kwargs = AnthropicPassthroughLoggingHandler._create_anthropic_response_logging_payload(
+            litellm_model_response=complete_streaming_response,
+            model=model,
+            kwargs={},
+            start_time=start_time,
+            end_time=end_time,
+            logging_obj=litellm_logging_obj,
+        )
+
+        return {
+            "result": complete_streaming_response,
+            "kwargs": kwargs,
+        }
+
+    @staticmethod
+    def _split_sse_chunk_into_events(chunk: Union[str, bytes]) -> List[str]:
+        """
+        Split a chunk that may contain multiple SSE events into individual events.
+
+        SSE format: "event: type\ndata: {...}\n\n"
+        Multiple events in a single chunk are separated by double newlines.
+
+        Args:
+            chunk: Raw chunk string that may contain multiple SSE events
+
+        Returns:
+            List of individual SSE event strings (each containing "event: X\ndata: {...}")
+        """
+        # Handle bytes input
+        if isinstance(chunk, bytes):
+            chunk = chunk.decode("utf-8")
+
+        # Split on double newlines to separate SSE events
+        # Filter out empty strings
+        events = [event.strip() for event in chunk.split("\n\n") if event.strip()]
+
+        return events
+
+    @staticmethod
+    def _build_complete_streaming_response(
+        all_chunks: Sequence[Union[str, bytes]],
+        litellm_logging_obj: LiteLLMLoggingObj,
+        model: str,
+    ) -> Optional[Union[ModelResponse, TextCompletionResponse]]:
+        """
+        Builds complete response from raw Anthropic chunks
+
+        - Splits multi-event chunks into individual SSE events
+        - Converts str chunks to generic chunks
+        - Converts generic chunks to litellm chunks (OpenAI format)
+        - Builds complete response from litellm chunks
+        """
+        verbose_proxy_logger.debug(
+            "Building complete streaming response from %d chunks", len(all_chunks)
+        )
+        anthropic_model_response_iterator = AnthropicModelResponseIterator(
+            streaming_response=None,
+            sync_stream=False,
+        )
+        all_openai_chunks = []
+
+        # Process each chunk - a chunk may contain multiple SSE events
+        for _chunk_str in all_chunks:
+            # Split chunk into individual SSE events
+            individual_events = (
+                AnthropicPassthroughLoggingHandler._split_sse_chunk_into_events(
+                    _chunk_str
+                )
+            )
+
+            # Process each individual event
+            for event_str in individual_events:
+                try:
+                    transformed_openai_chunk = anthropic_model_response_iterator.convert_str_chunk_to_generic_chunk(
+                        chunk=event_str
+                    )
+                    if transformed_openai_chunk is not None:
+                        all_openai_chunks.append(transformed_openai_chunk)
+
+                except (StopIteration, StopAsyncIteration):
+                    break
+
+        complete_streaming_response = litellm.stream_chunk_builder(
+            chunks=all_openai_chunks,
+            logging_obj=litellm_logging_obj,
+        )
+        verbose_proxy_logger.debug(
+            "Complete streaming response built: %s", complete_streaming_response
+        )
+        return complete_streaming_response
+
+    @staticmethod
+    def batch_creation_handler(  # noqa: PLR0915
+        httpx_response: httpx.Response,
+        logging_obj: LiteLLMLoggingObj,
+        url_route: str,
+        result: str,
+        start_time: datetime,
+        end_time: datetime,
+        cache_hit: bool,
+        request_body: Optional[dict] = None,
+        **kwargs,
+    ) -> PassThroughEndpointLoggingTypedDict:
+        """
+        Handle Anthropic batch creation passthrough logging.
+        Creates a managed object for cost tracking when batch job is successfully created.
+        """
+        import base64
+
+        from litellm._uuid import uuid
+        from litellm.llms.anthropic.batches.transformation import (
+            AnthropicBatchesConfig,
+        )
+        from litellm.types.utils import Choices, SpecialEnums
+
+        try:
+            _json_response = httpx_response.json()
+
+            # Only handle successful batch job creation (POST requests with 201 status)
+            if httpx_response.status_code == 200 and "id" in _json_response:
+                # Transform Anthropic response to LiteLLM batch format
+                anthropic_batches_config = AnthropicBatchesConfig()
+                litellm_batch_response = (
+                    anthropic_batches_config.transform_retrieve_batch_response(
+                        model=None,
+                        raw_response=httpx_response,
+                        logging_obj=logging_obj,
+                        litellm_params={},
+                    )
+                )
+                # Set status to "validating" for newly created batches so polling mechanism picks them up
+                # The polling mechanism only looks for status="validating" jobs
+                litellm_batch_response.status = "validating"
+
+                # Extract batch ID from the response
+                batch_id = _json_response.get("id", "")
+
+                # Get model from request body (batch response doesn't include model)
+                request_body = request_body or {}
+                # Try to extract model from the batch request body, supporting Anthropic's nested structure
+                model_name: str = "unknown"
+                if isinstance(request_body, dict):
+                    # Standard: {"model": ...}
+                    model_name = request_body.get("model") or "unknown"
+                    if model_name == "unknown":
+                        # Anthropic batches: look under requests[0].params.model
+                        requests_list = request_body.get("requests", [])
+                        if isinstance(requests_list, list) and len(requests_list) > 0:
+                            first_req = requests_list[0]
+                            if isinstance(first_req, dict):
+                                params = first_req.get("params", {})
+                                if isinstance(params, dict):
+                                    extracted_model = params.get("model")
+                                    if extracted_model:
+                                        model_name = extracted_model
+
+                # Create unified object ID for tracking
+                # Format: base64(litellm_proxy;model_id:{};llm_batch_id:{})
+                # For Anthropic passthrough, prefix model with "anthropic/" so router can determine provider
+                actual_model_id = (
+                    AnthropicPassthroughLoggingHandler.get_actual_model_id_from_router(
+                        model_name
+                    )
+                )
+
+                # If model not in router, use "anthropic/{model_name}" format so router can determine provider
+                if actual_model_id == model_name and not actual_model_id.startswith(
+                    "anthropic/"
+                ):
+                    actual_model_id = f"anthropic/{model_name}"
+
+                unified_id_string = (
+                    SpecialEnums.LITELLM_MANAGED_BATCH_COMPLETE_STR.value.format(
+                        actual_model_id, batch_id
+                    )
+                )
+                unified_object_id = (
+                    base64.urlsafe_b64encode(unified_id_string.encode())
+                    .decode()
+                    .rstrip("=")
+                )
+
+                # Store the managed object for cost tracking
+                # This will be picked up by check_batch_cost polling mechanism
+                AnthropicPassthroughLoggingHandler._store_batch_managed_object(
+                    unified_object_id=unified_object_id,
+                    batch_object=litellm_batch_response,
+                    model_object_id=batch_id,
+                    logging_obj=logging_obj,
+                    **kwargs,
+                )
+
+                # Create a batch job response for logging
+                litellm_model_response = ModelResponse()
+                litellm_model_response.id = str(uuid.uuid4())
+                litellm_model_response.model = model_name
+                litellm_model_response.object = "batch"
+                litellm_model_response.created = int(start_time.timestamp())
+
+                # Add batch-specific metadata to indicate this is a pending batch job
+                litellm_model_response.choices = [
+                    Choices(
+                        finish_reason="stop",
+                        index=0,
+                        message={
+                            "role": "assistant",
+                            "content": f"Batch job {batch_id} created and is pending. Status will be updated when the batch completes.",
+                            "tool_calls": None,
+                            "function_call": None,
+                            "provider_specific_fields": {
+                                "batch_job_id": batch_id,
+                                "batch_job_state": "in_progress",
+                                "unified_object_id": unified_object_id,
+                            },
+                        },
+                    )
+                ]
+
+                # Set response cost to 0 initially (will be updated when batch completes)
+                response_cost = 0.0
+                kwargs["response_cost"] = response_cost
+                kwargs["model"] = model_name
+                kwargs["batch_id"] = batch_id
+                kwargs["unified_object_id"] = unified_object_id
+                kwargs["batch_job_state"] = "in_progress"
+
+                logging_obj.model = model_name
+                logging_obj.model_call_details["model"] = logging_obj.model
+                logging_obj.model_call_details["response_cost"] = response_cost
+                logging_obj.model_call_details["batch_id"] = batch_id
+
+                return {
+                    "result": litellm_model_response,
+                    "kwargs": kwargs,
+                }
+            else:
+                # Handle non-successful responses
+                litellm_model_response = ModelResponse()
+                litellm_model_response.id = str(uuid.uuid4())
+                litellm_model_response.model = "anthropic_batch"
+                litellm_model_response.object = "batch"
+                litellm_model_response.created = int(start_time.timestamp())
+
+                # Add error-specific metadata
+                litellm_model_response.choices = [
+                    Choices(
+                        finish_reason="stop",
+                        index=0,
+                        message={
+                            "role": "assistant",
+                            "content": f"Batch job creation failed. Status: {httpx_response.status_code}",
+                            "tool_calls": None,
+                            "function_call": None,
+                            "provider_specific_fields": {
+                                "batch_job_state": "failed",
+                                "status_code": httpx_response.status_code,
+                            },
+                        },
+                    )
+                ]
+
+                kwargs["response_cost"] = 0.0
+                kwargs["model"] = "anthropic_batch"
+                kwargs["batch_job_state"] = "failed"
+
+                return {
+                    "result": litellm_model_response,
+                    "kwargs": kwargs,
+                }
+
+        except Exception as e:
+            verbose_proxy_logger.error(f"Error in batch_creation_handler: {e}")
+            # Return basic response on error
+            litellm_model_response = ModelResponse()
+            litellm_model_response.id = str(uuid.uuid4())
+            litellm_model_response.model = "anthropic_batch"
+            litellm_model_response.object = "batch"
+            litellm_model_response.created = int(start_time.timestamp())
+
+            # Add error-specific metadata
+            litellm_model_response.choices = [
+                Choices(
+                    finish_reason="stop",
+                    index=0,
+                    message={
+                        "role": "assistant",
+                        "content": f"Error creating batch job: {str(e)}",
+                        "tool_calls": None,
+                        "function_call": None,
+                        "provider_specific_fields": {
+                            "batch_job_state": "failed",
+                            "error": str(e),
+                        },
+                    },
+                )
+            ]
+
+            kwargs["response_cost"] = 0.0
+            kwargs["model"] = "anthropic_batch"
+            kwargs["batch_job_state"] = "failed"
+
+            return {
+                "result": litellm_model_response,
+                "kwargs": kwargs,
+            }
+
+    @staticmethod
+    def _store_batch_managed_object(
+        unified_object_id: str,
+        batch_object: LiteLLMBatch,
+        model_object_id: str,
+        logging_obj: LiteLLMLoggingObj,
+        **kwargs,
+    ) -> None:
+        """
+        Store batch managed object for cost tracking.
+        This will be picked up by the check_batch_cost polling mechanism.
+        """
+        try:
+            # Get the managed files hook from the logging object
+            # This is a bit of a hack, but we need access to the proxy logging system
+            from litellm.proxy.proxy_server import proxy_logging_obj
+
+            managed_files_hook = proxy_logging_obj.get_proxy_hook("managed_files")
+            if managed_files_hook is not None and hasattr(
+                managed_files_hook, "store_unified_object_id"
+            ):
+                # Create a mock user API key dict for the managed object storage
+                from litellm.proxy._types import LitellmUserRoles, UserAPIKeyAuth
+
+                user_api_key_dict = UserAPIKeyAuth(
+                    user_id=kwargs.get("user_id", "default-user"),
+                    api_key="",
+                    team_id=None,
+                    team_alias=None,
+                    user_role=LitellmUserRoles.CUSTOMER,  # Use proper enum value
+                    user_email=None,
+                    max_budget=None,
+                    spend=0.0,  # Set to 0.0 instead of None
+                    models=[],  # Set to empty list instead of None
+                    tpm_limit=None,
+                    rpm_limit=None,
+                    budget_duration=None,
+                    budget_reset_at=None,
+                    max_parallel_requests=None,
+                    allowed_model_region=None,
+                    metadata={},  # Set to empty dict instead of None
+                    key_alias=None,
+                    permissions={},  # Set to empty dict instead of None
+                    model_max_budget={},  # Set to empty dict instead of None
+                    model_spend={},  # Set to empty dict instead of None
+                )
+
+                # Store the unified object for batch cost tracking
+                import asyncio
+
+                asyncio.create_task(
+                    managed_files_hook.store_unified_object_id(  # type: ignore
+                        unified_object_id=unified_object_id,
+                        file_object=batch_object,
+                        litellm_parent_otel_span=None,
+                        model_object_id=model_object_id,
+                        file_purpose="batch",
+                        user_api_key_dict=user_api_key_dict,
+                    )
+                )
+
+                verbose_proxy_logger.info(
+                    f"Stored Anthropic batch managed object with unified_object_id={unified_object_id}, batch_id={model_object_id}"
+                )
+            else:
+                verbose_proxy_logger.warning(
+                    "Managed files hook not available, cannot store batch object for cost tracking"
+                )
+
+        except Exception as e:
+            verbose_proxy_logger.error(
+                f"Error storing Anthropic batch managed object: {e}"
+            )
+
+    @staticmethod
+    def get_actual_model_id_from_router(model_name: str) -> str:
+        from litellm.proxy.proxy_server import llm_router
+
+        if llm_router is not None:
+            # Try to find the model in the router by the model name
+            # Use the existing get_model_ids method from router
+            model_ids = llm_router.get_model_ids(model_name=model_name)
+            if model_ids and len(model_ids) > 0:
+                # Use the first model ID found
+                actual_model_id = model_ids[0]
+                verbose_proxy_logger.info(
+                    f"Found model ID in router: {actual_model_id}"
+                )
+                return actual_model_id
+            else:
+                # Fallback to model name
+                actual_model_id = model_name
+                verbose_proxy_logger.warning(
+                    f"Model not found in router, using model name: {actual_model_id}"
+                )
+                return actual_model_id
+        else:
+            # Fallback if router is not available
+            verbose_proxy_logger.warning(
+                f"Router not available, using model name: {model_name}"
+            )
+            return model_name

llm-gateway-competitors/litellm-wheel-src/litellm/proxy/pass_through_endpoints/llm_provider_handlers/assembly_passthrough_logging_handler.py

@@ -0,0 +1,333 @@
+import asyncio
+import json
+import time
+from datetime import datetime
+from typing import Literal, Optional
+from urllib.parse import urlparse
+
+import httpx
+from typing_extensions import TypedDict
+
+import litellm
+from litellm._logging import verbose_proxy_logger
+from litellm.litellm_core_utils.litellm_logging import Logging as LiteLLMLoggingObj
+from litellm.litellm_core_utils.litellm_logging import (
+    get_standard_logging_object_payload,
+)
+from litellm.litellm_core_utils.thread_pool_executor import executor
+from litellm.types.passthrough_endpoints.assembly_ai import (
+    ASSEMBLY_AI_MAX_POLLING_ATTEMPTS,
+    ASSEMBLY_AI_POLLING_INTERVAL,
+)
+from litellm.types.passthrough_endpoints.pass_through_endpoints import (
+    PassthroughStandardLoggingPayload,
+)
+
+
+class AssemblyAITranscriptResponse(TypedDict, total=False):
+    id: str
+    speech_model: str
+    acoustic_model: str
+    language_code: str
+    status: str
+    audio_duration: float
+
+
+class AssemblyAIPassthroughLoggingHandler:
+    def __init__(self):
+        self.assembly_ai_base_url = "https://api.assemblyai.com"
+        self.assembly_ai_eu_base_url = "https://eu.assemblyai.com"
+        """
+        The base URL for the AssemblyAI API
+        """
+
+        self.polling_interval: float = ASSEMBLY_AI_POLLING_INTERVAL
+        """
+        The polling interval for the AssemblyAI API. 
+        litellm needs to poll the GET /transcript/{transcript_id} endpoint to get the status of the transcript.
+        """
+
+        self.max_polling_attempts = ASSEMBLY_AI_MAX_POLLING_ATTEMPTS
+        """
+        The maximum number of polling attempts for the AssemblyAI API.
+        """
+
+    def assemblyai_passthrough_logging_handler(
+        self,
+        httpx_response: httpx.Response,
+        response_body: dict,
+        logging_obj: LiteLLMLoggingObj,
+        url_route: str,
+        result: str,
+        start_time: datetime,
+        end_time: datetime,
+        cache_hit: bool,
+        **kwargs,
+    ):
+        """
+        Since cost tracking requires polling the AssemblyAI API, we need to handle this in a separate thread. Hence the executor.submit.
+        """
+        executor.submit(
+            self._handle_assemblyai_passthrough_logging,
+            httpx_response,
+            response_body,
+            logging_obj,
+            url_route,
+            result,
+            start_time,
+            end_time,
+            cache_hit,
+            **kwargs,
+        )
+
+    def _handle_assemblyai_passthrough_logging(
+        self,
+        httpx_response: httpx.Response,
+        response_body: dict,
+        logging_obj: LiteLLMLoggingObj,
+        url_route: str,
+        result: str,
+        start_time: datetime,
+        end_time: datetime,
+        cache_hit: bool,
+        **kwargs,
+    ):
+        """
+        Handles logging for AssemblyAI successful passthrough requests
+        """
+        from ..pass_through_endpoints import pass_through_endpoint_logging
+
+        model = response_body.get("speech_model", "")
+        verbose_proxy_logger.debug(
+            "response body %s", json.dumps(response_body, indent=4)
+        )
+        kwargs["model"] = model
+        kwargs["custom_llm_provider"] = "assemblyai"
+        response_cost: Optional[float] = None
+
+        transcript_id = response_body.get("id")
+        if transcript_id is None:
+            raise ValueError(
+                "Transcript ID is required to log the cost of the transcription"
+            )
+        transcript_response = self._poll_assembly_for_transcript_response(
+            transcript_id=transcript_id, url_route=url_route
+        )
+        verbose_proxy_logger.debug(
+            "finished polling assembly for transcript response- got transcript response %s",
+            json.dumps(transcript_response, indent=4),
+        )
+        if transcript_response:
+            cost = self.get_cost_for_assembly_transcript(
+                speech_model=model,
+                transcript_response=transcript_response,
+            )
+            response_cost = cost
+
+        # Make standard logging object for Vertex AI
+        standard_logging_object = get_standard_logging_object_payload(
+            kwargs=kwargs,
+            init_response_obj=transcript_response,
+            start_time=start_time,
+            end_time=end_time,
+            logging_obj=logging_obj,
+            status="success",
+        )
+
+        passthrough_logging_payload: Optional[PassthroughStandardLoggingPayload] = (  # type: ignore
+            kwargs.get("passthrough_logging_payload")
+        )
+
+        verbose_proxy_logger.debug(
+            "standard_passthrough_logging_object %s",
+            json.dumps(passthrough_logging_payload, indent=4),
+        )
+
+        # pretty print standard logging object
+        verbose_proxy_logger.debug(
+            "standard_logging_object= %s", json.dumps(standard_logging_object, indent=4)
+        )
+        logging_obj.model_call_details["model"] = model
+        logging_obj.model_call_details["custom_llm_provider"] = "assemblyai"
+        logging_obj.model_call_details["response_cost"] = response_cost
+
+        asyncio.run(
+            pass_through_endpoint_logging._handle_logging(
+                logging_obj=logging_obj,
+                standard_logging_response_object=self._get_response_to_log(
+                    transcript_response
+                ),
+                result=result,
+                start_time=start_time,
+                end_time=end_time,
+                cache_hit=cache_hit,
+                **kwargs,
+            )
+        )
+
+        pass
+
+    def _get_response_to_log(
+        self, transcript_response: Optional[AssemblyAITranscriptResponse]
+    ) -> dict:
+        if transcript_response is None:
+            return {}
+        return dict(transcript_response)
+
+    def _get_assembly_transcript(
+        self,
+        transcript_id: str,
+        request_region: Optional[Literal["eu"]] = None,
+    ) -> Optional[dict]:
+        """
+        Get the transcript details from AssemblyAI API
+
+        Args:
+            response_body (dict): Response containing the transcript ID
+
+        Returns:
+            Optional[dict]: Transcript details if successful, None otherwise
+        """
+        from litellm.proxy.pass_through_endpoints.llm_passthrough_endpoints import (
+            passthrough_endpoint_router,
+        )
+
+        _base_url = (
+            self.assembly_ai_eu_base_url
+            if request_region == "eu"
+            else self.assembly_ai_base_url
+        )
+        _api_key = passthrough_endpoint_router.get_credentials(
+            custom_llm_provider="assemblyai",
+            region_name=request_region,
+        )
+        if _api_key is None:
+            raise ValueError("AssemblyAI API key not found")
+        try:
+            url = f"{_base_url}/v2/transcript/{transcript_id}"
+            headers = {
+                "Authorization": f"Bearer {_api_key}",
+                "Content-Type": "application/json",
+            }
+
+            response = httpx.get(url, headers=headers)
+            response.raise_for_status()
+
+            return response.json()
+        except Exception as e:
+            verbose_proxy_logger.exception(
+                f"[Non blocking logging error] Error getting AssemblyAI transcript: {str(e)}"
+            )
+            return None
+
+    def _poll_assembly_for_transcript_response(
+        self,
+        transcript_id: str,
+        url_route: Optional[str] = None,
+    ) -> Optional[AssemblyAITranscriptResponse]:
+        """
+        Poll the status of the transcript until it is completed or timeout (30 minutes)
+        """
+        for _ in range(
+            self.max_polling_attempts
+        ):  # 180 attempts * 10s = 30 minutes max
+            transcript = self._get_assembly_transcript(
+                request_region=AssemblyAIPassthroughLoggingHandler._get_assembly_region_from_url(
+                    url=url_route
+                ),
+                transcript_id=transcript_id,
+            )
+            if transcript is None:
+                return None
+            if (
+                transcript.get("status") == "completed"
+                or transcript.get("status") == "error"
+            ):
+                return AssemblyAITranscriptResponse(**transcript)
+            time.sleep(self.polling_interval)
+        return None
+
+    @staticmethod
+    def get_cost_for_assembly_transcript(
+        transcript_response: AssemblyAITranscriptResponse,
+        speech_model: str,
+    ) -> Optional[float]:
+        """
+        Get the cost for the assembly transcript
+        """
+        _audio_duration = transcript_response.get("audio_duration")
+        if _audio_duration is None:
+            return None
+        _cost_per_second = (
+            AssemblyAIPassthroughLoggingHandler.get_cost_per_second_for_assembly_model(
+                speech_model=speech_model
+            )
+        )
+        if _cost_per_second is None:
+            return None
+        return _audio_duration * _cost_per_second
+
+    @staticmethod
+    def get_cost_per_second_for_assembly_model(speech_model: str) -> Optional[float]:
+        """
+        Get the cost per second for the assembly model.
+        Falls back to assemblyai/nano if the specific speech model info cannot be found.
+        """
+        try:
+            # First try with the provided speech model
+            try:
+                model_info = litellm.get_model_info(
+                    model=speech_model,
+                    custom_llm_provider="assemblyai",
+                )
+                if model_info and model_info.get("input_cost_per_second") is not None:
+                    return model_info.get("input_cost_per_second")
+            except Exception:
+                pass  # Continue to fallback if model not found
+
+            # Fallback to assemblyai/nano if speech model info not found
+            try:
+                model_info = litellm.get_model_info(
+                    model="assemblyai/nano",
+                    custom_llm_provider="assemblyai",
+                )
+                if model_info and model_info.get("input_cost_per_second") is not None:
+                    return model_info.get("input_cost_per_second")
+            except Exception:
+                pass
+
+            return None
+        except Exception as e:
+            verbose_proxy_logger.exception(
+                f"[Non blocking logging error] Error getting AssemblyAI model info: {str(e)}"
+            )
+            return None
+
+    @staticmethod
+    def _should_log_request(request_method: str) -> bool:
+        """
+        only POST transcription jobs are logged. litellm will POLL assembly to wait for the transcription to complete to log the complete response / cost
+        """
+        return request_method == "POST"
+
+    @staticmethod
+    def _get_assembly_region_from_url(url: Optional[str]) -> Optional[Literal["eu"]]:
+        """
+        Get the region from the URL
+        """
+        if url is None:
+            return None
+        if urlparse(url).hostname == "eu.assemblyai.com":
+            return "eu"
+        return None
+
+    @staticmethod
+    def _get_assembly_base_url_from_region(region: Optional[Literal["eu"]]) -> str:
+        """
+        Get the base URL for the AssemblyAI API
+        if region == "eu", return "https://api.eu.assemblyai.com"
+        else return "https://api.assemblyai.com"
+        """
+        if region == "eu":
+            return "https://api.eu.assemblyai.com"
+        return "https://api.assemblyai.com"

llm-gateway-competitors/litellm-wheel-src/litellm/proxy/pass_through_endpoints/llm_provider_handlers/base_passthrough_logging_handler.py

@@ -0,0 +1,221 @@
+import json
+from datetime import datetime
+from typing import TYPE_CHECKING, Any, List, Optional, Union
+
+import httpx
+
+import litellm
+from litellm._logging import verbose_proxy_logger
+from litellm.litellm_core_utils.litellm_logging import Logging as LiteLLMLoggingObj
+from litellm.litellm_core_utils.litellm_logging import (
+    get_standard_logging_object_payload,
+)
+from litellm.llms.base_llm.chat.transformation import BaseConfig
+from litellm.proxy._types import PassThroughEndpointLoggingTypedDict
+from litellm.proxy.auth.auth_utils import get_end_user_id_from_request_body
+from litellm.types.passthrough_endpoints.pass_through_endpoints import (
+    PassthroughStandardLoggingPayload,
+)
+from litellm.types.utils import LlmProviders, ModelResponse, TextCompletionResponse
+
+if TYPE_CHECKING:
+    from ..success_handler import PassThroughEndpointLogging
+    from ..types import EndpointType
+else:
+    PassThroughEndpointLogging = Any
+    EndpointType = Any
+
+from abc import ABC, abstractmethod
+
+
+class BasePassthroughLoggingHandler(ABC):
+    @property
+    @abstractmethod
+    def llm_provider_name(self) -> LlmProviders:
+        pass
+
+    @abstractmethod
+    def get_provider_config(self, model: str) -> BaseConfig:
+        pass
+
+    def passthrough_chat_handler(
+        self,
+        httpx_response: httpx.Response,
+        response_body: dict,
+        logging_obj: LiteLLMLoggingObj,
+        url_route: str,
+        result: str,
+        start_time: datetime,
+        end_time: datetime,
+        cache_hit: bool,
+        request_body: dict,
+        **kwargs,
+    ) -> PassThroughEndpointLoggingTypedDict:
+        """
+        Transforms LLM response to OpenAI response, generates a standard logging object so downstream logging can be handled
+        """
+        model = request_body.get("model", response_body.get("model", ""))
+        provider_config = self.get_provider_config(model=model)
+        litellm_model_response: ModelResponse = provider_config.transform_response(
+            raw_response=httpx_response,
+            model_response=litellm.ModelResponse(),
+            model=model,
+            messages=[],
+            logging_obj=logging_obj,
+            optional_params={},
+            api_key="",
+            request_data={},
+            encoding=litellm.encoding,
+            json_mode=False,
+            litellm_params={},
+        )
+
+        kwargs = self._create_response_logging_payload(
+            litellm_model_response=litellm_model_response,
+            model=model,
+            kwargs=kwargs,
+            start_time=start_time,
+            end_time=end_time,
+            logging_obj=logging_obj,
+        )
+
+        return {
+            "result": litellm_model_response,
+            "kwargs": kwargs,
+        }
+
+    def _get_user_from_metadata(
+        self,
+        passthrough_logging_payload: PassthroughStandardLoggingPayload,
+    ) -> Optional[str]:
+        request_body = passthrough_logging_payload.get("request_body")
+        if request_body:
+            return get_end_user_id_from_request_body(request_body)
+        return None
+
+    def _create_response_logging_payload(
+        self,
+        litellm_model_response: Union[ModelResponse, TextCompletionResponse],
+        model: str,
+        kwargs: dict,
+        start_time: datetime,
+        end_time: datetime,
+        logging_obj: LiteLLMLoggingObj,
+    ) -> dict:
+        """
+        Create the standard logging object for Generic LLM passthrough
+
+        handles streaming and non-streaming responses
+        """
+
+        try:
+            response_cost = litellm.completion_cost(
+                completion_response=litellm_model_response,
+                model=model,
+            )
+
+            kwargs["response_cost"] = response_cost
+            kwargs["model"] = model
+            passthrough_logging_payload: Optional[PassthroughStandardLoggingPayload] = (  # type: ignore
+                kwargs.get("passthrough_logging_payload")
+            )
+            if passthrough_logging_payload:
+                user = self._get_user_from_metadata(
+                    passthrough_logging_payload=passthrough_logging_payload,
+                )
+                if user:
+                    kwargs.setdefault("litellm_params", {})
+                    kwargs["litellm_params"].update(
+                        {"proxy_server_request": {"body": {"user": user}}}
+                    )
+
+            # Make standard logging object for Anthropic
+            standard_logging_object = get_standard_logging_object_payload(
+                kwargs=kwargs,
+                init_response_obj=litellm_model_response,
+                start_time=start_time,
+                end_time=end_time,
+                logging_obj=logging_obj,
+                status="success",
+            )
+
+            # pretty print standard logging object
+            verbose_proxy_logger.debug(
+                "standard_logging_object= %s",
+                json.dumps(standard_logging_object, indent=4),
+            )
+            kwargs["standard_logging_object"] = standard_logging_object
+
+            # set litellm_call_id to logging response object
+            litellm_model_response.id = logging_obj.litellm_call_id
+            litellm_model_response.model = model
+            logging_obj.model_call_details["model"] = model
+            return kwargs
+        except Exception as e:
+            verbose_proxy_logger.exception(
+                "Error creating LLM passthrough response logging payload: %s", e
+            )
+            return kwargs
+
+    @abstractmethod
+    def _build_complete_streaming_response(
+        self,
+        all_chunks: List[str],
+        litellm_logging_obj: LiteLLMLoggingObj,
+        model: str,
+    ) -> Optional[Union[ModelResponse, TextCompletionResponse]]:
+        """
+        Builds complete response from raw chunks
+
+        - Converts str chunks to generic chunks
+        - Converts generic chunks to litellm chunks (OpenAI format)
+        - Builds complete response from litellm chunks
+        """
+        pass
+
+    def _handle_logging_llm_collected_chunks(
+        self,
+        litellm_logging_obj: LiteLLMLoggingObj,
+        passthrough_success_handler_obj: PassThroughEndpointLogging,
+        url_route: str,
+        request_body: dict,
+        endpoint_type: EndpointType,
+        start_time: datetime,
+        all_chunks: List[str],
+        end_time: datetime,
+    ) -> PassThroughEndpointLoggingTypedDict:
+        """
+        Takes raw chunks from Anthropic passthrough endpoint and logs them in litellm callbacks
+
+        - Builds complete response from chunks
+        - Creates standard logging object
+        - Logs in litellm callbacks
+        """
+
+        model = request_body.get("model", "")
+        complete_streaming_response = self._build_complete_streaming_response(
+            all_chunks=all_chunks,
+            litellm_logging_obj=litellm_logging_obj,
+            model=model,
+        )
+        if complete_streaming_response is None:
+            verbose_proxy_logger.error(
+                "Unable to build complete streaming response for Anthropic passthrough endpoint, not logging..."
+            )
+            return {
+                "result": None,
+                "kwargs": {},
+            }
+        kwargs = self._create_response_logging_payload(
+            litellm_model_response=complete_streaming_response,
+            model=model,
+            kwargs={},
+            start_time=start_time,
+            end_time=end_time,
+            logging_obj=litellm_logging_obj,
+        )
+
+        return {
+            "result": complete_streaming_response,
+            "kwargs": kwargs,
+        }

llm-gateway-competitors/litellm-wheel-src/litellm/proxy/pass_through_endpoints/llm_provider_handlers/cohere_passthrough_logging_handler.py

@@ -0,0 +1,192 @@
+from datetime import datetime
+from typing import List, Optional, Union
+
+import httpx
+
+import litellm
+from litellm import stream_chunk_builder
+from litellm.litellm_core_utils.litellm_logging import Logging as LiteLLMLoggingObj
+from litellm.litellm_core_utils.litellm_logging import (
+    get_standard_logging_object_payload,
+)
+from litellm.litellm_core_utils.streaming_handler import CustomStreamWrapper
+from litellm.llms.base_llm.chat.transformation import BaseConfig
+from litellm.llms.cohere.chat.v2_transformation import CohereV2ChatConfig
+from litellm.llms.cohere.common_utils import (
+    ModelResponseIterator as CohereModelResponseIterator,
+)
+from litellm.llms.cohere.embed.v1_transformation import CohereEmbeddingConfig
+from litellm.proxy._types import PassThroughEndpointLoggingTypedDict
+from litellm.types.passthrough_endpoints.pass_through_endpoints import (
+    PassthroughStandardLoggingPayload,
+)
+from litellm.types.utils import (
+    LlmProviders,
+    ModelResponse,
+    TextCompletionResponse,
+)
+
+from .base_passthrough_logging_handler import BasePassthroughLoggingHandler
+
+
+class CoherePassthroughLoggingHandler(BasePassthroughLoggingHandler):
+    @property
+    def llm_provider_name(self) -> LlmProviders:
+        return LlmProviders.COHERE
+
+    def get_provider_config(self, model: str) -> BaseConfig:
+        return CohereV2ChatConfig()
+
+    def _build_complete_streaming_response(
+        self,
+        all_chunks: List[str],
+        litellm_logging_obj: LiteLLMLoggingObj,
+        model: str,
+    ) -> Optional[Union[ModelResponse, TextCompletionResponse]]:
+        cohere_model_response_iterator = CohereModelResponseIterator(
+            streaming_response=None,
+            sync_stream=False,
+        )
+        litellm_custom_stream_wrapper = CustomStreamWrapper(
+            completion_stream=cohere_model_response_iterator,
+            model=model,
+            logging_obj=litellm_logging_obj,
+            custom_llm_provider="cohere",
+        )
+        all_openai_chunks = []
+        for _chunk_str in all_chunks:
+            try:
+                generic_chunk = (
+                    cohere_model_response_iterator.convert_str_chunk_to_generic_chunk(
+                        chunk=_chunk_str
+                    )
+                )
+                litellm_chunk = litellm_custom_stream_wrapper.chunk_creator(
+                    chunk=generic_chunk
+                )
+                if litellm_chunk is not None:
+                    all_openai_chunks.append(litellm_chunk)
+            except (StopIteration, StopAsyncIteration):
+                break
+        complete_streaming_response = stream_chunk_builder(chunks=all_openai_chunks)
+        return complete_streaming_response
+
+    def cohere_passthrough_handler(  # noqa: PLR0915
+        self,
+        httpx_response: httpx.Response,
+        response_body: dict,
+        logging_obj: LiteLLMLoggingObj,
+        url_route: str,
+        result: str,
+        start_time: datetime,
+        end_time: datetime,
+        cache_hit: bool,
+        request_body: dict,
+        **kwargs,
+    ) -> PassThroughEndpointLoggingTypedDict:
+        """
+        Handle Cohere passthrough logging with route detection and cost tracking.
+        """
+        # Check if this is an embed endpoint
+        if "/v1/embed" in url_route:
+            model = request_body.get("model", response_body.get("model", ""))
+            try:
+                cohere_embed_config = CohereEmbeddingConfig()
+                litellm_model_response = litellm.EmbeddingResponse()
+                handler_instance = CoherePassthroughLoggingHandler()
+
+                input_texts = request_body.get("texts", [])
+                if not input_texts:
+                    input_texts = request_body.get("input", [])
+
+                # Transform the response
+                litellm_model_response = cohere_embed_config._transform_response(
+                    response=httpx_response,
+                    api_key="",
+                    logging_obj=logging_obj,
+                    data=request_body,
+                    model_response=litellm_model_response,
+                    model=model,
+                    encoding=litellm.encoding,
+                    input=input_texts,
+                )
+
+                # Calculate cost using LiteLLM's cost calculator
+                response_cost = litellm.completion_cost(
+                    completion_response=litellm_model_response,
+                    model=model,
+                    custom_llm_provider="cohere",
+                    call_type="aembedding",
+                )
+
+                # Set the calculated cost in _hidden_params to prevent recalculation
+                if not hasattr(litellm_model_response, "_hidden_params"):
+                    litellm_model_response._hidden_params = {}
+                litellm_model_response._hidden_params["response_cost"] = response_cost
+
+                kwargs["response_cost"] = response_cost
+                kwargs["model"] = model
+                kwargs["custom_llm_provider"] = "cohere"
+
+                # Extract user information for tracking
+                passthrough_logging_payload: Optional[
+                    PassthroughStandardLoggingPayload
+                ] = kwargs.get("passthrough_logging_payload")
+                if passthrough_logging_payload:
+                    user = handler_instance._get_user_from_metadata(
+                        passthrough_logging_payload=passthrough_logging_payload,
+                    )
+                    if user:
+                        kwargs.setdefault("litellm_params", {})
+                        kwargs["litellm_params"].update(
+                            {"proxy_server_request": {"body": {"user": user}}}
+                        )
+
+                # Create standard logging object
+                if litellm_model_response is not None:
+                    get_standard_logging_object_payload(
+                        kwargs=kwargs,
+                        init_response_obj=litellm_model_response,
+                        start_time=start_time,
+                        end_time=end_time,
+                        logging_obj=logging_obj,
+                        status="success",
+                    )
+
+                # Update logging object with cost information
+                logging_obj.model_call_details["model"] = model
+                logging_obj.model_call_details["custom_llm_provider"] = "cohere"
+                logging_obj.model_call_details["response_cost"] = response_cost
+
+                return {
+                    "result": litellm_model_response,
+                    "kwargs": kwargs,
+                }
+            except Exception:
+                # For other routes (e.g., /v2/chat), fall back to chat handler
+                return super().passthrough_chat_handler(
+                    httpx_response=httpx_response,
+                    response_body=response_body,
+                    logging_obj=logging_obj,
+                    url_route=url_route,
+                    result=result,
+                    start_time=start_time,
+                    end_time=end_time,
+                    cache_hit=cache_hit,
+                    request_body=request_body,
+                    **kwargs,
+                )
+
+        # For non-embed routes (e.g., /v2/chat), fall back to chat handler
+        return super().passthrough_chat_handler(
+            httpx_response=httpx_response,
+            response_body=response_body,
+            logging_obj=logging_obj,
+            url_route=url_route,
+            result=result,
+            start_time=start_time,
+            end_time=end_time,
+            cache_hit=cache_hit,
+            request_body=request_body,
+            **kwargs,
+        )

llm-gateway-competitors/litellm-wheel-src/litellm/proxy/pass_through_endpoints/llm_provider_handlers/cursor_passthrough_logging_handler.py

@@ -0,0 +1,139 @@
+"""
+Cursor Cloud Agents API - Pass-through Logging Handler
+
+Transforms Cursor API responses into standardized logging payloads
+so they appear cleanly in the LiteLLM Logs page.
+"""
+
+from datetime import datetime
+from typing import Dict
+
+import httpx
+
+from litellm._logging import verbose_proxy_logger
+from litellm.litellm_core_utils.litellm_logging import Logging as LiteLLMLoggingObj
+from litellm.litellm_core_utils.litellm_logging import (
+    get_standard_logging_object_payload,
+)
+from litellm.proxy._types import PassThroughEndpointLoggingTypedDict
+from litellm.types.utils import StandardPassThroughResponseObject
+
+
+CURSOR_AGENT_ENDPOINTS: Dict[str, str] = {
+    "POST /v0/agents": "cursor:agent:create",
+    "GET /v0/agents": "cursor:agent:list",
+    "POST /v0/agents/{id}/followup": "cursor:agent:followup",
+    "POST /v0/agents/{id}/stop": "cursor:agent:stop",
+    "DELETE /v0/agents/{id}": "cursor:agent:delete",
+    "GET /v0/agents/{id}/conversation": "cursor:agent:conversation",
+    "GET /v0/agents/{id}": "cursor:agent:status",
+    "GET /v0/me": "cursor:account:info",
+    "GET /v0/models": "cursor:models:list",
+    "GET /v0/repositories": "cursor:repositories:list",
+}
+
+
+def _classify_cursor_request(method: str, path: str) -> str:
+    """Classify a Cursor API request into a readable operation name."""
+    normalized = path.rstrip("/")
+
+    for pattern, operation in CURSOR_AGENT_ENDPOINTS.items():
+        pat_method, pat_path = pattern.split(" ", 1)
+        if method.upper() != pat_method:
+            continue
+
+        pat_parts = pat_path.strip("/").split("/")
+        req_parts = normalized.strip("/").split("/")
+
+        if len(pat_parts) != len(req_parts):
+            continue
+
+        match = True
+        for pp, rp in zip(pat_parts, req_parts):
+            if pp.startswith("{") and pp.endswith("}"):
+                continue
+            if pp != rp:
+                match = False
+                break
+        if match:
+            return operation
+
+    return f"cursor:{method.lower()}:{normalized}"
+
+
+class CursorPassthroughLoggingHandler:
+    """Handles logging for Cursor Cloud Agents pass-through requests."""
+
+    @staticmethod
+    def cursor_passthrough_handler(
+        httpx_response: httpx.Response,
+        response_body: dict,
+        logging_obj: LiteLLMLoggingObj,
+        url_route: str,
+        result: str,
+        start_time: datetime,
+        end_time: datetime,
+        cache_hit: bool,
+        request_body: dict,
+        **kwargs,
+    ) -> PassThroughEndpointLoggingTypedDict:
+        """
+        Transform a Cursor API response into a standard logging payload.
+        """
+        try:
+            method = httpx_response.request.method
+            path = httpx.URL(url_route).path
+            operation = _classify_cursor_request(method, path)
+
+            agent_id = response_body.get("id", "")
+            agent_name = response_body.get("name", "")
+            agent_status = response_body.get("status", "")
+
+            model_name = f"cursor/{operation}"
+
+            summary_parts = []
+            if agent_id:
+                summary_parts.append(f"id={agent_id}")
+            if agent_name:
+                summary_parts.append(f"name={agent_name}")
+            if agent_status:
+                summary_parts.append(f"status={agent_status}")
+
+            response_summary = ", ".join(summary_parts) if summary_parts else result
+
+            kwargs["model"] = model_name
+            kwargs["response_cost"] = 0.0
+            logging_obj.model_call_details["model"] = model_name
+            logging_obj.model_call_details["custom_llm_provider"] = "cursor"
+            logging_obj.model_call_details["response_cost"] = 0.0
+
+            standard_logging_object = get_standard_logging_object_payload(
+                kwargs=kwargs,
+                init_response_obj=StandardPassThroughResponseObject(
+                    response=response_summary
+                ),
+                start_time=start_time,
+                end_time=end_time,
+                logging_obj=logging_obj,
+                status="success",
+            )
+            kwargs["standard_logging_object"] = standard_logging_object
+
+            verbose_proxy_logger.debug(
+                "Cursor passthrough logging: operation=%s, agent_id=%s",
+                operation,
+                agent_id,
+            )
+
+            return {
+                "result": StandardPassThroughResponseObject(response=response_summary),
+                "kwargs": kwargs,
+            }
+        except Exception as e:
+            verbose_proxy_logger.exception(
+                "Error in Cursor passthrough logging handler: %s", e
+            )
+            return {
+                "result": StandardPassThroughResponseObject(response=result),
+                "kwargs": kwargs,
+            }

llm-gateway-competitors/litellm-wheel-src/litellm/proxy/pass_through_endpoints/llm_provider_handlers/gemini_passthrough_logging_handler.py

@@ -0,0 +1,254 @@
+import re
+from datetime import datetime
+from typing import TYPE_CHECKING, Any, Dict, List, Optional, Union
+
+import httpx
+
+import litellm
+from litellm._logging import verbose_proxy_logger
+from litellm.litellm_core_utils.litellm_logging import Logging as LiteLLMLoggingObj
+from litellm.llms.gemini.videos.transformation import GeminiVideoConfig
+from litellm.llms.vertex_ai.gemini.vertex_and_google_ai_studio_gemini import (
+    ModelResponseIterator as GeminiModelResponseIterator,
+)
+from litellm.proxy._types import PassThroughEndpointLoggingTypedDict
+from litellm.types.utils import (
+    ModelResponse,
+    TextCompletionResponse,
+)
+
+if TYPE_CHECKING:
+    from litellm.types.passthrough_endpoints.pass_through_endpoints import EndpointType
+
+    from ..success_handler import PassThroughEndpointLogging
+else:
+    PassThroughEndpointLogging = Any
+    EndpointType = Any
+
+
+class GeminiPassthroughLoggingHandler:
+    @staticmethod
+    def gemini_passthrough_handler(
+        httpx_response: httpx.Response,
+        response_body: dict,
+        logging_obj: LiteLLMLoggingObj,
+        url_route: str,
+        result: str,
+        start_time: datetime,
+        end_time: datetime,
+        cache_hit: bool,
+        request_body: dict,
+        **kwargs,
+    ) -> PassThroughEndpointLoggingTypedDict:
+        if "predictLongRunning" in url_route:
+            model = GeminiPassthroughLoggingHandler.extract_model_from_url(url_route)
+
+            gemini_video_config = GeminiVideoConfig()
+            litellm_video_response = (
+                gemini_video_config.transform_video_create_response(
+                    model=model,
+                    raw_response=httpx_response,
+                    logging_obj=logging_obj,
+                    custom_llm_provider="gemini",
+                    request_data=request_body,
+                )
+            )
+            logging_obj.model = model
+            logging_obj.model_call_details["model"] = model
+            logging_obj.model_call_details["custom_llm_provider"] = "gemini"
+            logging_obj.custom_llm_provider = "gemini"
+
+            response_cost = litellm.completion_cost(
+                completion_response=litellm_video_response,
+                model=model,
+                custom_llm_provider="gemini",
+                call_type="create_video",
+            )
+
+            # Set response_cost in _hidden_params to prevent recalculation
+            if not hasattr(litellm_video_response, "_hidden_params"):
+                litellm_video_response._hidden_params = {}
+            litellm_video_response._hidden_params["response_cost"] = response_cost
+
+            kwargs["response_cost"] = response_cost
+            kwargs["model"] = model
+            kwargs["custom_llm_provider"] = "gemini"
+            logging_obj.model_call_details["response_cost"] = response_cost
+            return {
+                "result": litellm_video_response,
+                "kwargs": kwargs,
+            }
+
+        if "generateContent" in url_route:
+            model = GeminiPassthroughLoggingHandler.extract_model_from_url(url_route)
+
+            # Use Gemini config for transformation
+            instance_of_gemini_llm = litellm.GoogleAIStudioGeminiConfig()
+            litellm_model_response: ModelResponse = (
+                instance_of_gemini_llm.transform_response(
+                    model=model,
+                    messages=[
+                        {"role": "user", "content": "no-message-pass-through-endpoint"}
+                    ],
+                    raw_response=httpx_response,
+                    model_response=litellm.ModelResponse(),
+                    logging_obj=logging_obj,
+                    optional_params={},
+                    litellm_params={},
+                    api_key="",
+                    request_data={},
+                    encoding=litellm.encoding,
+                )
+            )
+            kwargs = GeminiPassthroughLoggingHandler._create_gemini_response_logging_payload_for_generate_content(
+                litellm_model_response=litellm_model_response,
+                model=model,
+                kwargs=kwargs,
+                start_time=start_time,
+                end_time=end_time,
+                logging_obj=logging_obj,
+                custom_llm_provider="gemini",
+            )
+
+            return {
+                "result": litellm_model_response,
+                "kwargs": kwargs,
+            }
+        else:
+            return {
+                "result": None,
+                "kwargs": kwargs,
+            }
+
+    @staticmethod
+    def _handle_logging_gemini_collected_chunks(
+        litellm_logging_obj: LiteLLMLoggingObj,
+        passthrough_success_handler_obj: PassThroughEndpointLogging,
+        url_route: str,
+        request_body: dict,
+        endpoint_type: EndpointType,
+        start_time: datetime,
+        all_chunks: List[str],
+        model: Optional[str],
+        end_time: datetime,
+    ) -> PassThroughEndpointLoggingTypedDict:
+        """
+        Takes raw chunks from Gemini passthrough endpoint and logs them in litellm callbacks
+
+        - Builds complete response from chunks
+        - Creates standard logging object
+        - Logs in litellm callbacks
+        """
+        kwargs: Dict[str, Any] = {}
+        model = model or GeminiPassthroughLoggingHandler.extract_model_from_url(
+            url_route
+        )
+        complete_streaming_response = (
+            GeminiPassthroughLoggingHandler._build_complete_streaming_response(
+                all_chunks=all_chunks,
+                litellm_logging_obj=litellm_logging_obj,
+                model=model,
+                url_route=url_route,
+            )
+        )
+
+        if complete_streaming_response is None:
+            verbose_proxy_logger.error(
+                "Unable to build complete streaming response for Gemini passthrough endpoint, not logging..."
+            )
+            return {
+                "result": None,
+                "kwargs": kwargs,
+            }
+
+        kwargs = GeminiPassthroughLoggingHandler._create_gemini_response_logging_payload_for_generate_content(
+            litellm_model_response=complete_streaming_response,
+            model=model,
+            kwargs=kwargs,
+            start_time=start_time,
+            end_time=end_time,
+            logging_obj=litellm_logging_obj,
+            custom_llm_provider="gemini",
+        )
+
+        return {
+            "result": complete_streaming_response,
+            "kwargs": kwargs,
+        }
+
+    @staticmethod
+    def _build_complete_streaming_response(
+        all_chunks: List[str],
+        litellm_logging_obj: LiteLLMLoggingObj,
+        model: str,
+        url_route: str,
+    ) -> Optional[Union[ModelResponse, TextCompletionResponse]]:
+        parsed_chunks = []
+        if "generateContent" in url_route or "streamGenerateContent" in url_route:
+            gemini_iterator: Any = GeminiModelResponseIterator(
+                streaming_response=None,
+                sync_stream=False,
+                logging_obj=litellm_logging_obj,
+            )
+            chunk_parsing_logic: Any = gemini_iterator._common_chunk_parsing_logic
+            parsed_chunks = [chunk_parsing_logic(chunk) for chunk in all_chunks]
+        else:
+            return None
+
+        if len(parsed_chunks) == 0:
+            return None
+
+        all_openai_chunks = []
+        for parsed_chunk in parsed_chunks:
+            if parsed_chunk is None:
+                continue
+            all_openai_chunks.append(parsed_chunk)
+
+        complete_streaming_response = litellm.stream_chunk_builder(
+            chunks=all_openai_chunks
+        )
+
+        return complete_streaming_response
+
+    @staticmethod
+    def extract_model_from_url(url: str) -> str:
+        pattern = r"/models/([^:]+)"
+        match = re.search(pattern, url)
+        if match:
+            return match.group(1)
+        return "unknown"
+
+    @staticmethod
+    def _create_gemini_response_logging_payload_for_generate_content(
+        litellm_model_response: Union[ModelResponse, TextCompletionResponse],
+        model: str,
+        kwargs: dict,
+        start_time: datetime,
+        end_time: datetime,
+        logging_obj: LiteLLMLoggingObj,
+        custom_llm_provider: str,
+    ):
+        """
+        Create the standard logging object for Gemini passthrough generateContent (streaming and non-streaming)
+        """
+
+        response_cost = litellm.completion_cost(
+            completion_response=litellm_model_response,
+            model=model,
+            custom_llm_provider="gemini",
+        )
+
+        kwargs["response_cost"] = response_cost
+        kwargs["model"] = model
+        kwargs["custom_llm_provider"] = custom_llm_provider
+
+        # pretty print standard logging object
+        verbose_proxy_logger.debug("kwargs= %s", kwargs)
+
+        # set litellm_call_id to logging response object
+        litellm_model_response.id = logging_obj.litellm_call_id
+        logging_obj.model = litellm_model_response.model or model
+        logging_obj.model_call_details["model"] = logging_obj.model
+        logging_obj.model_call_details["custom_llm_provider"] = custom_llm_provider
+        logging_obj.model_call_details["response_cost"] = response_cost
+        return kwargs

llm-gateway-competitors/litellm-wheel-src/litellm/proxy/pass_through_endpoints/llm_provider_handlers/openai_passthrough_logging_handler.py

@@ -0,0 +1,608 @@
+"""
+OpenAI Passthrough Logging Handler
+
+Handles cost tracking and logging for OpenAI passthrough endpoints, specifically /chat/completions.
+"""
+
+from datetime import datetime
+from typing import List, Optional, Union
+from urllib.parse import urlparse
+
+import httpx
+
+import litellm
+from litellm._logging import verbose_proxy_logger
+from litellm.litellm_core_utils.litellm_logging import Logging as LiteLLMLoggingObj
+from litellm.litellm_core_utils.litellm_logging import (
+    get_standard_logging_object_payload,
+)
+from litellm.llms.openai.openai import OpenAIConfig
+from litellm.llms.openai.openai import OpenAIConfig as OpenAIConfigType
+from litellm.proxy._types import PassThroughEndpointLoggingTypedDict
+from litellm.proxy.pass_through_endpoints.llm_provider_handlers.base_passthrough_logging_handler import (
+    BasePassthroughLoggingHandler,
+)
+from litellm.proxy.pass_through_endpoints.success_handler import (
+    PassThroughEndpointLogging,
+)
+from litellm.types.passthrough_endpoints.pass_through_endpoints import (
+    EndpointType,
+    PassthroughStandardLoggingPayload,
+)
+from litellm.types.utils import ImageResponse, LlmProviders, PassthroughCallTypes
+from litellm.utils import ModelResponse, TextCompletionResponse
+
+
+class OpenAIPassthroughLoggingHandler(BasePassthroughLoggingHandler):
+    """
+    OpenAI-specific passthrough logging handler that provides cost tracking for /chat/completions endpoints.
+    """
+
+    @property
+    def llm_provider_name(self) -> LlmProviders:
+        return LlmProviders.OPENAI
+
+    def get_provider_config(self, model: str) -> OpenAIConfigType:
+        """Get OpenAI provider configuration for the given model."""
+        return OpenAIConfig()
+
+    @staticmethod
+    def is_openai_chat_completions_route(url_route: str) -> bool:
+        """Check if the URL route is an OpenAI chat completions endpoint."""
+        if not url_route:
+            return False
+        parsed_url = urlparse(url_route)
+        return bool(
+            parsed_url.hostname
+            and (
+                "api.openai.com" in parsed_url.hostname
+                or "openai.azure.com" in parsed_url.hostname
+            )
+            and "/v1/chat/completions" in parsed_url.path
+        )
+
+    @staticmethod
+    def is_openai_image_generation_route(url_route: str) -> bool:
+        """Check if the URL route is an OpenAI image generation endpoint."""
+        if not url_route:
+            return False
+        parsed_url = urlparse(url_route)
+        return bool(
+            parsed_url.hostname
+            and (
+                "api.openai.com" in parsed_url.hostname
+                or "openai.azure.com" in parsed_url.hostname
+            )
+            and "/v1/images/generations" in parsed_url.path
+        )
+
+    @staticmethod
+    def is_openai_image_editing_route(url_route: str) -> bool:
+        """Check if the URL route is an OpenAI image editing endpoint."""
+        if not url_route:
+            return False
+        parsed_url = urlparse(url_route)
+        return bool(
+            parsed_url.hostname
+            and (
+                "api.openai.com" in parsed_url.hostname
+                or "openai.azure.com" in parsed_url.hostname
+            )
+            and "/v1/images/edits" in parsed_url.path
+        )
+
+    @staticmethod
+    def is_openai_responses_route(url_route: str) -> bool:
+        """Check if the URL route is an OpenAI responses API endpoint."""
+        if not url_route:
+            return False
+        parsed_url = urlparse(url_route)
+        return bool(
+            parsed_url.hostname
+            and (
+                "api.openai.com" in parsed_url.hostname
+                or "openai.azure.com" in parsed_url.hostname
+            )
+            and ("/v1/responses" in parsed_url.path or "/responses" in parsed_url.path)
+        )
+
+    def _get_user_from_metadata(
+        self,
+        passthrough_logging_payload: PassthroughStandardLoggingPayload,
+    ) -> Optional[str]:
+        """Extract user information from passthrough logging payload."""
+        request_body = passthrough_logging_payload.get("request_body")
+        if request_body:
+            return request_body.get("user")
+        return None
+
+    @staticmethod
+    def _calculate_image_generation_cost(
+        model: str,
+        response_body: dict,
+        request_body: dict,
+    ) -> float:
+        """Calculate cost for OpenAI image generation."""
+        try:
+            # Extract parameters from request
+            n = request_body.get("n", 1)
+            try:
+                n = int(n)
+            except Exception:
+                n = 1
+            size = request_body.get("size", "1024x1024")
+            quality = request_body.get("quality", None)
+
+            # Use LiteLLM's default image cost calculator
+            from litellm.cost_calculator import default_image_cost_calculator
+
+            cost = default_image_cost_calculator(
+                model=model,
+                custom_llm_provider="openai",
+                quality=quality,
+                n=n,
+                size=size,
+                optional_params=request_body,
+            )
+
+            return cost
+        except Exception as e:
+            verbose_proxy_logger.warning(
+                f"Error calculating image generation cost: {str(e)}"
+            )
+            return 0.0
+
+    @staticmethod
+    def _calculate_image_editing_cost(
+        model: str,
+        response_body: dict,
+        request_body: dict,
+    ) -> float:
+        """Calculate cost for OpenAI image editing."""
+        try:
+            # Extract parameters from request
+            n = request_body.get("n", 1)
+            # Image edit typically uses multipart/form-data (because of files), so all fields arrive as strings (e.g., n = "1").
+            try:
+                n = int(n)
+            except Exception:
+                n = 1
+            size = request_body.get("size", "1024x1024")
+
+            # Use LiteLLM's default image cost calculator
+            from litellm.cost_calculator import default_image_cost_calculator
+
+            cost = default_image_cost_calculator(
+                model=model,
+                custom_llm_provider="openai",
+                quality=None,  # Image editing doesn't have quality parameter
+                n=n,
+                size=size,
+                optional_params=request_body,
+            )
+
+            return cost
+        except Exception as e:
+            verbose_proxy_logger.warning(
+                f"Error calculating image editing cost: {str(e)}"
+            )
+            return 0.0
+
+    @staticmethod
+    def openai_passthrough_handler(  # noqa: PLR0915
+        httpx_response: httpx.Response,
+        response_body: dict,
+        logging_obj: LiteLLMLoggingObj,
+        url_route: str,
+        result: str,
+        start_time: datetime,
+        end_time: datetime,
+        cache_hit: bool,
+        request_body: dict,
+        **kwargs,
+    ) -> PassThroughEndpointLoggingTypedDict:
+        """
+        Handle OpenAI passthrough logging with cost tracking for chat completions, image generation, image editing, and responses API.
+        """
+        # Check if this is a supported endpoint for cost tracking
+        is_chat_completions = (
+            OpenAIPassthroughLoggingHandler.is_openai_chat_completions_route(url_route)
+        )
+        is_image_generation = (
+            OpenAIPassthroughLoggingHandler.is_openai_image_generation_route(url_route)
+        )
+        is_image_editing = (
+            OpenAIPassthroughLoggingHandler.is_openai_image_editing_route(url_route)
+        )
+        is_responses = OpenAIPassthroughLoggingHandler.is_openai_responses_route(
+            url_route
+        )
+
+        if not (
+            is_chat_completions
+            or is_image_generation
+            or is_image_editing
+            or is_responses
+        ):
+            # For unsupported endpoints, return None to let the system fall back to generic behavior
+            return {
+                "result": None,
+                "kwargs": kwargs,
+            }
+
+        # Extract model from request or response
+        model = request_body.get("model", response_body.get("model", ""))
+        if not model:
+            verbose_proxy_logger.warning(
+                "No model found in request or response for OpenAI passthrough cost tracking"
+            )
+            base_handler = OpenAIPassthroughLoggingHandler()
+            return base_handler.passthrough_chat_handler(
+                httpx_response=httpx_response,
+                response_body=response_body,
+                logging_obj=logging_obj,
+                url_route=url_route,
+                result=result,
+                start_time=start_time,
+                end_time=end_time,
+                cache_hit=cache_hit,
+                request_body=request_body,
+                **kwargs,
+            )
+
+        try:
+            response_cost = 0.0
+            litellm_model_response: Optional[
+                Union[ModelResponse, TextCompletionResponse, ImageResponse]
+            ] = None
+            handler_instance = OpenAIPassthroughLoggingHandler()
+
+            custom_llm_provider = kwargs.get("custom_llm_provider", "openai")
+
+            if is_chat_completions:
+                # Handle chat completions with existing logic
+                provider_config = handler_instance.get_provider_config(model=model)
+                # Preserve existing litellm_params to maintain metadata tags
+                existing_litellm_params = kwargs.get("litellm_params", {}) or {}
+                litellm_model_response = provider_config.transform_response(
+                    raw_response=httpx_response,
+                    model_response=litellm.ModelResponse(),
+                    model=model,
+                    messages=request_body.get("messages", []),
+                    logging_obj=logging_obj,
+                    optional_params=request_body.get("optional_params", {}),
+                    api_key="",
+                    request_data=request_body,
+                    encoding=litellm.encoding,
+                    json_mode=request_body.get("response_format", {}).get("type")
+                    == "json_object",
+                    litellm_params=existing_litellm_params,
+                )
+
+                # Calculate cost using LiteLLM's cost calculator
+                response_cost = litellm.completion_cost(
+                    completion_response=litellm_model_response,
+                    model=model,
+                    custom_llm_provider=custom_llm_provider,
+                )
+            elif is_image_generation:
+                # Handle image generation cost calculation
+                response_cost = (
+                    OpenAIPassthroughLoggingHandler._calculate_image_generation_cost(
+                        model=model,
+                        response_body=response_body,
+                        request_body=request_body,
+                    )
+                )
+                # Mark call type for downstream image-aware logic/metrics
+                try:
+                    logging_obj.call_type = (
+                        PassthroughCallTypes.passthrough_image_generation.value
+                    )
+                except Exception:
+                    pass
+                # Create a simple response object for logging
+                litellm_model_response = ImageResponse(
+                    data=response_body.get("data", []),
+                    model=model,
+                )
+                # Set the calculated cost in _hidden_params to prevent recalculation
+                if not hasattr(litellm_model_response, "_hidden_params"):
+                    litellm_model_response._hidden_params = {}
+                litellm_model_response._hidden_params["response_cost"] = response_cost
+            elif is_image_editing:
+                # Handle image editing cost calculation
+                response_cost = (
+                    OpenAIPassthroughLoggingHandler._calculate_image_editing_cost(
+                        model=model,
+                        response_body=response_body,
+                        request_body=request_body,
+                    )
+                )
+                # Mark call type for downstream image-aware logic/metrics
+                try:
+                    logging_obj.call_type = (
+                        PassthroughCallTypes.passthrough_image_generation.value
+                    )
+                except Exception:
+                    pass
+                # Create a simple response object for logging
+                litellm_model_response = ImageResponse(
+                    data=response_body.get("data", []),
+                    model=model,
+                )
+                # Set the calculated cost in _hidden_params to prevent recalculation
+                if not hasattr(litellm_model_response, "_hidden_params"):
+                    litellm_model_response._hidden_params = {}
+                litellm_model_response._hidden_params["response_cost"] = response_cost
+            elif is_responses:
+                # Handle responses API cost calculation
+                provider_config = handler_instance.get_provider_config(model=model)
+                existing_litellm_params = kwargs.get("litellm_params", {}) or {}
+                litellm_model_response = provider_config.transform_response(
+                    raw_response=httpx_response,
+                    model_response=litellm.ModelResponse(),
+                    model=model,
+                    messages=request_body.get("messages", []),
+                    logging_obj=logging_obj,
+                    optional_params=request_body.get("optional_params", {}),
+                    api_key="",
+                    request_data=request_body,
+                    encoding=litellm.encoding,
+                    json_mode=False,
+                    litellm_params=existing_litellm_params,
+                )
+
+                # Calculate cost using LiteLLM's cost calculator with responses call type
+                response_cost = litellm.completion_cost(
+                    completion_response=litellm_model_response,
+                    model=model,
+                    custom_llm_provider=custom_llm_provider,
+                    call_type="responses",
+                )
+
+            # Update kwargs with cost information
+            kwargs["response_cost"] = response_cost
+            kwargs["model"] = model
+            kwargs["custom_llm_provider"] = custom_llm_provider
+
+            # Extract user information for tracking
+            passthrough_logging_payload: Optional[
+                PassthroughStandardLoggingPayload
+            ] = kwargs.get("passthrough_logging_payload")
+            if passthrough_logging_payload:
+                user = handler_instance._get_user_from_metadata(
+                    passthrough_logging_payload=passthrough_logging_payload,
+                )
+                if user:
+                    kwargs["litellm_params"].setdefault(
+                        "proxy_server_request", {}
+                    ).setdefault("body", {})["user"] = user
+
+            # Create standard logging object
+            if litellm_model_response is not None:
+                get_standard_logging_object_payload(
+                    kwargs=kwargs,
+                    init_response_obj=litellm_model_response,
+                    start_time=start_time,
+                    end_time=end_time,
+                    logging_obj=logging_obj,
+                    status="success",
+                )
+
+            # Update logging object with cost information
+            logging_obj.model_call_details["model"] = model
+            logging_obj.model_call_details["custom_llm_provider"] = custom_llm_provider
+            logging_obj.model_call_details["response_cost"] = response_cost
+
+            endpoint_type = (
+                "chat_completions"
+                if is_chat_completions
+                else "image_generation"
+                if is_image_generation
+                else "image_editing"
+            )
+            verbose_proxy_logger.debug(
+                f"OpenAI passthrough cost tracking - Endpoint: {endpoint_type}, Model: {model}, Cost: ${response_cost:.6f}"
+            )
+
+            return {
+                "result": litellm_model_response,
+                "kwargs": kwargs,
+            }
+
+        except Exception as e:
+            verbose_proxy_logger.error(
+                f"Error in OpenAI passthrough cost tracking: {str(e)}"
+            )
+            # Fall back to base handler without cost tracking
+            base_handler = OpenAIPassthroughLoggingHandler()
+            return base_handler.passthrough_chat_handler(
+                httpx_response=httpx_response,
+                response_body=response_body,
+                logging_obj=logging_obj,
+                url_route=url_route,
+                result=result,
+                start_time=start_time,
+                end_time=end_time,
+                cache_hit=cache_hit,
+                request_body=request_body,
+                **kwargs,
+            )
+
+    def _build_complete_streaming_response(
+        self,
+        all_chunks: list,
+        litellm_logging_obj: LiteLLMLoggingObj,
+        model: str,
+    ) -> Optional[Union[ModelResponse, TextCompletionResponse]]:
+        """
+        Builds complete response from raw chunks for OpenAI streaming responses.
+
+        - Converts str chunks to generic chunks
+        - Converts generic chunks to litellm chunks (OpenAI format)
+        - Builds complete response from litellm chunks
+        """
+        try:
+            # OpenAI's response iterator to parse chunks
+            from litellm.llms.openai.openai import OpenAIChatCompletionResponseIterator
+
+            openai_iterator = OpenAIChatCompletionResponseIterator(
+                streaming_response=None,
+                sync_stream=False,
+            )
+
+            all_openai_chunks = []
+            for chunk_str in all_chunks:
+                try:
+                    # Parse the string chunk using the base iterator's string parser
+                    from litellm.llms.base_llm.base_model_iterator import (
+                        BaseModelResponseIterator,
+                    )
+
+                    # Convert string chunk to dict
+                    stripped_json_chunk = (
+                        BaseModelResponseIterator._string_to_dict_parser(
+                            str_line=chunk_str
+                        )
+                    )
+
+                    if stripped_json_chunk:
+                        # Parse the chunk using OpenAI's chunk parser
+                        transformed_chunk = openai_iterator.chunk_parser(
+                            chunk=stripped_json_chunk
+                        )
+                        if transformed_chunk is not None:
+                            all_openai_chunks.append(transformed_chunk)
+
+                except (StopIteration, StopAsyncIteration, Exception) as e:
+                    verbose_proxy_logger.debug(f"Error parsing streaming chunk: {e}")
+                    continue
+
+            if not all_openai_chunks:
+                verbose_proxy_logger.warning(
+                    "No valid chunks found in streaming response"
+                )
+                return None
+
+            # Build complete response from chunks
+            complete_streaming_response = litellm.stream_chunk_builder(
+                chunks=all_openai_chunks
+            )
+
+            return complete_streaming_response
+
+        except Exception as e:
+            verbose_proxy_logger.error(
+                f"Error building complete streaming response: {str(e)}"
+            )
+            return None
+
+    @staticmethod
+    def _handle_logging_openai_collected_chunks(
+        litellm_logging_obj: LiteLLMLoggingObj,
+        passthrough_success_handler_obj: PassThroughEndpointLogging,
+        url_route: str,
+        request_body: dict,
+        endpoint_type: EndpointType,
+        start_time: datetime,
+        all_chunks: List[str],
+        end_time: datetime,
+    ) -> PassThroughEndpointLoggingTypedDict:
+        """
+        Handle logging for collected OpenAI streaming chunks with cost tracking.
+        """
+        try:
+            # Extract model from request body
+            model = request_body.get("model", "gpt-4o")
+
+            # Build complete response from chunks using our streaming handler
+            handler = OpenAIPassthroughLoggingHandler()
+            handler_instance = handler
+            complete_response = handler._build_complete_streaming_response(
+                all_chunks=all_chunks,
+                litellm_logging_obj=litellm_logging_obj,
+                model=model,
+            )
+
+            if complete_response is None:
+                verbose_proxy_logger.warning(
+                    "Failed to build complete response from OpenAI streaming chunks"
+                )
+                return {
+                    "result": None,
+                    "kwargs": {},
+                }
+
+            custom_llm_provider = litellm_logging_obj.model_call_details.get(
+                "custom_llm_provider", "openai"
+            )
+            # Calculate cost using LiteLLM's cost calculator
+            response_cost = litellm.completion_cost(
+                completion_response=complete_response,
+                model=model,
+                custom_llm_provider=custom_llm_provider,
+            )
+
+            # Preserve existing litellm_params to maintain metadata tags
+            existing_litellm_params = (
+                litellm_logging_obj.model_call_details.get("litellm_params", {}) or {}
+            )
+
+            # Prepare kwargs for logging
+            kwargs = {
+                "response_cost": response_cost,
+                "model": model,
+                "custom_llm_provider": custom_llm_provider,
+                "litellm_params": existing_litellm_params.copy(),
+            }
+
+            # Extract user information for tracking
+            passthrough_logging_payload: Optional[
+                PassthroughStandardLoggingPayload
+            ] = litellm_logging_obj.model_call_details.get(
+                "passthrough_logging_payload"
+            )
+            if passthrough_logging_payload:
+                user = handler_instance._get_user_from_metadata(
+                    passthrough_logging_payload=passthrough_logging_payload,
+                )
+                if user:
+                    kwargs["litellm_params"].setdefault(
+                        "proxy_server_request", {}
+                    ).setdefault("body", {})["user"] = user
+
+            # Create standard logging object
+            get_standard_logging_object_payload(
+                kwargs=kwargs,
+                init_response_obj=complete_response,
+                start_time=start_time,
+                end_time=end_time,
+                logging_obj=litellm_logging_obj,
+                status="success",
+            )
+
+            # Update logging object with cost information
+            litellm_logging_obj.model_call_details["model"] = model
+            litellm_logging_obj.model_call_details[
+                "custom_llm_provider"
+            ] = custom_llm_provider
+            litellm_logging_obj.model_call_details["response_cost"] = response_cost
+
+            verbose_proxy_logger.debug(
+                f"OpenAI streaming passthrough cost tracking - Model: {model}, Cost: ${response_cost:.6f}"
+            )
+
+            return {
+                "result": complete_response,
+                "kwargs": kwargs,
+            }
+
+        except Exception as e:
+            verbose_proxy_logger.error(
+                f"Error in OpenAI streaming passthrough cost tracking: {str(e)}"
+            )
+            return {
+                "result": None,
+                "kwargs": {},
+            }

llm-gateway-competitors/litellm-wheel-src/litellm/proxy/pass_through_endpoints/llm_provider_handlers/vertex_ai_live_passthrough_logging_handler.py

@@ -0,0 +1,403 @@
+"""
+Vertex AI Live API WebSocket Passthrough Logging Handler
+
+Handles cost tracking and logging for Vertex AI Live API WebSocket passthrough endpoints.
+Supports different modalities: text, audio, video, and web search.
+"""
+
+from datetime import datetime
+from typing import Any, Dict, List, Optional
+
+from litellm._logging import verbose_proxy_logger
+from litellm.proxy.pass_through_endpoints.llm_provider_handlers.base_passthrough_logging_handler import (
+    BasePassthroughLoggingHandler,
+)
+from litellm.proxy.pass_through_endpoints.llm_provider_handlers.openai_passthrough_logging_handler import (
+    PassThroughEndpointLoggingTypedDict,
+)
+from litellm.types.utils import LlmProviders, ModelResponse, Usage
+from litellm.utils import get_model_info
+
+
+class VertexAILivePassthroughLoggingHandler(BasePassthroughLoggingHandler):
+    """
+    Handles cost tracking and logging for Vertex AI Live API WebSocket passthrough.
+
+    Supports:
+    - Text tokens (input/output)
+    - Audio tokens (input/output)
+    - Video tokens (input/output)
+    - Web search requests
+    - Tool use tokens
+    """
+
+    def _build_complete_streaming_response(self, *args, **kwargs):
+        """Not applicable for WebSocket passthrough."""
+        return None
+
+    def get_provider_config(self, model: str):
+        """Return Vertex AI provider configuration."""
+        from litellm.llms.vertex_ai.gemini.vertex_and_google_ai_studio_gemini import (
+            VertexGeminiConfig,
+        )
+
+        return VertexGeminiConfig()
+
+    @property
+    def llm_provider_name(self) -> LlmProviders:
+        """Return the LLM provider name."""
+        return LlmProviders.VERTEX_AI
+
+    @staticmethod
+    def _extract_usage_metadata_from_websocket_messages(
+        websocket_messages: List[Dict],
+    ) -> Optional[Dict]:
+        """
+        Extract and aggregate usage metadata from a list of WebSocket messages.
+
+        Args:
+            websocket_messages: List of WebSocket messages from the Live API
+
+        Returns:
+            Dictionary containing aggregated usage metadata, or None if not found
+        """
+        all_usage_metadata = []
+
+        # Collect all usage metadata messages
+        for message in websocket_messages:
+            if isinstance(message, dict) and "usageMetadata" in message:
+                all_usage_metadata.append(message["usageMetadata"])
+
+        if not all_usage_metadata:
+            return None
+
+        # If only one usage metadata, return it as-is
+        if len(all_usage_metadata) == 1:
+            return all_usage_metadata[0]
+
+        # Aggregate multiple usage metadata messages
+        aggregated: Dict[str, Any] = {
+            "promptTokenCount": 0,
+            "candidatesTokenCount": 0,
+            "totalTokenCount": 0,
+            "promptTokensDetails": [],
+            "candidatesTokensDetails": [],
+        }
+
+        # Aggregate token counts
+        for usage in all_usage_metadata:
+            aggregated["promptTokenCount"] += usage.get("promptTokenCount", 0)
+            aggregated["candidatesTokenCount"] += usage.get("candidatesTokenCount", 0)
+            aggregated["totalTokenCount"] += usage.get("totalTokenCount", 0)
+
+        # Aggregate token details by modality
+        modality_totals = {}
+
+        for usage in all_usage_metadata:
+            # Process prompt tokens details
+            for detail in usage.get("promptTokensDetails", []):
+                modality = detail.get("modality", "TEXT")
+                token_count = detail.get("tokenCount", 0)
+
+                if modality not in modality_totals:
+                    modality_totals[modality] = {"prompt": 0, "candidate": 0}
+                modality_totals[modality]["prompt"] += token_count
+
+            # Process candidate tokens details
+            for detail in usage.get("candidatesTokensDetails", []):
+                modality = detail.get("modality", "TEXT")
+                token_count = detail.get("tokenCount", 0)
+
+                if modality not in modality_totals:
+                    modality_totals[modality] = {"prompt": 0, "candidate": 0}
+                modality_totals[modality]["candidate"] += token_count
+
+        # Convert aggregated modality totals back to details format
+        for modality, totals in modality_totals.items():
+            if totals["prompt"] > 0:
+                aggregated["promptTokensDetails"].append(
+                    {"modality": modality, "tokenCount": totals["prompt"]}
+                )
+            if totals["candidate"] > 0:
+                aggregated["candidatesTokensDetails"].append(
+                    {"modality": modality, "tokenCount": totals["candidate"]}
+                )
+
+        # Add any additional fields from the first usage metadata
+        first_usage = all_usage_metadata[0]
+        for key, value in first_usage.items():
+            if key not in aggregated:
+                aggregated[key] = value
+
+        return aggregated
+
+    @staticmethod
+    def _calculate_live_api_cost(
+        model: str,
+        usage_metadata: Dict,
+        custom_llm_provider: str = "vertex_ai",
+    ) -> float:
+        """
+        Calculate cost for Vertex AI Live API based on usage metadata.
+
+        Args:
+            model: The model name (e.g., "gemini-2.0-flash-live-preview-04-09")
+            usage_metadata: Usage metadata from the Live API response
+            custom_llm_provider: The LLM provider (default: "vertex_ai")
+
+        Returns:
+            Total cost in USD
+        """
+        try:
+            # Get model pricing information
+            model_info = get_model_info(
+                model=model, custom_llm_provider=custom_llm_provider
+            )
+
+            verbose_proxy_logger.debug(
+                f"Vertex AI Live API model info for '{model}': {model_info}"
+            )
+
+            # Check if pricing info is available
+            if not model_info or not model_info.get("input_cost_per_token"):
+                verbose_proxy_logger.error(
+                    f"No pricing info found for {model} in local model pricing database"
+                )
+                return 0.0
+
+            total_cost = 0.0
+
+            # Extract token counts from usage metadata
+            prompt_token_count = usage_metadata.get("promptTokenCount", 0)
+            candidates_token_count = usage_metadata.get("candidatesTokenCount", 0)
+
+            # Calculate base text token costs
+            input_cost_per_token = model_info.get("input_cost_per_token", 0.0)
+            output_cost_per_token = model_info.get("output_cost_per_token", 0.0)
+
+            total_cost += prompt_token_count * input_cost_per_token
+            total_cost += candidates_token_count * output_cost_per_token
+
+            # Handle modality-specific costs if present
+            prompt_tokens_details = usage_metadata.get("promptTokensDetails", [])
+            candidates_tokens_details = usage_metadata.get(
+                "candidatesTokensDetails", []
+            )
+
+            # Process prompt tokens by modality
+            for detail in prompt_tokens_details:
+                modality = detail.get("modality", "TEXT")
+                token_count = detail.get("tokenCount", 0)
+
+                if modality == "AUDIO":
+                    audio_cost_per_token = model_info.get(
+                        "input_cost_per_audio_token", 0.0
+                    )
+                    total_cost += token_count * audio_cost_per_token
+                elif modality == "VIDEO":
+                    # Video tokens are typically per second, but we'll treat as per token for now
+                    video_cost_per_token = model_info.get(
+                        "input_cost_per_video_per_second", 0.0
+                    )
+                    total_cost += token_count * video_cost_per_token
+                # TEXT tokens are already handled above
+
+            # Process candidate tokens by modality
+            for detail in candidates_tokens_details:
+                modality = detail.get("modality", "TEXT")
+                token_count = detail.get("tokenCount", 0)
+
+                if modality == "AUDIO":
+                    audio_cost_per_token = model_info.get(
+                        "output_cost_per_audio_token", 0.0
+                    )
+                    total_cost += token_count * audio_cost_per_token
+                elif modality == "VIDEO":
+                    # Video tokens are typically per second, but we'll treat as per token for now
+                    video_cost_per_token = model_info.get(
+                        "output_cost_per_video_per_second", 0.0
+                    )
+                    total_cost += token_count * video_cost_per_token
+                # TEXT tokens are already handled above
+
+            # Handle web search costs if present
+            tool_use_prompt_token_count = usage_metadata.get(
+                "toolUsePromptTokenCount", 0
+            )
+            if tool_use_prompt_token_count > 0:
+                # Web search typically has a fixed cost per request
+                web_search_cost = model_info.get("web_search_cost_per_request", 0.0)
+                if isinstance(web_search_cost, (int, float)) and web_search_cost > 0:
+                    total_cost += web_search_cost
+                else:
+                    # Fallback to token-based pricing for tool use
+                    total_cost += tool_use_prompt_token_count * input_cost_per_token
+
+            verbose_proxy_logger.debug(
+                f"Vertex AI Live API cost calculation - Model: {model}, "
+                f"Prompt tokens: {prompt_token_count}, "
+                f"Candidate tokens: {candidates_token_count}, "
+                f"Total cost: ${total_cost:.6f}"
+            )
+
+            return total_cost
+
+        except Exception as e:
+            verbose_proxy_logger.error(
+                f"Error calculating Vertex AI Live API cost: {e}"
+            )
+            return 0.0
+
+    @staticmethod
+    def _create_usage_object_from_metadata(
+        usage_metadata: Dict,
+        model: str,
+    ) -> Usage:
+        """
+        Create a LiteLLM Usage object from Live API usage metadata.
+
+        Args:
+            usage_metadata: Usage metadata from the Live API response
+            model: The model name
+
+        Returns:
+            LiteLLM Usage object
+        """
+        prompt_tokens = usage_metadata.get("promptTokenCount", 0)
+        completion_tokens = usage_metadata.get("candidatesTokenCount", 0)
+        total_tokens = usage_metadata.get("totalTokenCount", 0)
+
+        # Create modality-specific token details if available
+        prompt_tokens_details = usage_metadata.get("promptTokensDetails", [])
+        candidates_tokens_details = usage_metadata.get("candidatesTokensDetails", [])
+
+        # Extract text tokens from details
+        text_prompt_tokens = 0
+        text_completion_tokens = 0
+
+        for detail in prompt_tokens_details:
+            if detail.get("modality") == "TEXT":
+                text_prompt_tokens = detail.get("tokenCount", 0)
+                break
+
+        for detail in candidates_tokens_details:
+            if detail.get("modality") == "TEXT":
+                text_completion_tokens = detail.get("tokenCount", 0)
+                break
+
+        # If no text tokens found in details, use total counts
+        if text_prompt_tokens == 0:
+            text_prompt_tokens = prompt_tokens
+        if text_completion_tokens == 0:
+            text_completion_tokens = completion_tokens
+
+        return Usage(
+            prompt_tokens=text_prompt_tokens,
+            completion_tokens=text_completion_tokens,
+            total_tokens=total_tokens,
+        )
+
+    def vertex_ai_live_passthrough_handler(
+        self,
+        websocket_messages: List[Dict],
+        logging_obj,
+        url_route: str,
+        start_time: datetime,
+        end_time: datetime,
+        request_body: dict,
+        **kwargs,
+    ) -> PassThroughEndpointLoggingTypedDict:
+        """
+        Handle cost tracking and logging for Vertex AI Live API WebSocket passthrough.
+
+        Args:
+            websocket_messages: List of WebSocket messages from the Live API
+            logging_obj: LiteLLM logging object
+            url_route: The URL route that was called
+            start_time: Request start time
+            end_time: Request end time
+            request_body: The original request body
+            **kwargs: Additional keyword arguments
+
+        Returns:
+            Dictionary containing the result and kwargs for logging
+        """
+        try:
+            # Extract model from request body or kwargs
+            model = kwargs.get("model", "gemini-2.0-flash-live-preview-04-09")
+            custom_llm_provider = kwargs.get("custom_llm_provider", "vertex_ai")
+            verbose_proxy_logger.debug(
+                f"Vertex AI Live API model: {model}, custom_llm_provider: {custom_llm_provider}"
+            )
+
+            # Extract usage metadata from WebSocket messages
+            usage_metadata = self._extract_usage_metadata_from_websocket_messages(
+                websocket_messages
+            )
+
+            if not usage_metadata:
+                verbose_proxy_logger.warning(
+                    "No usage metadata found in Vertex AI Live API WebSocket messages"
+                )
+                return {
+                    "result": None,
+                    "kwargs": kwargs,
+                }
+
+            # Calculate cost using Live API specific pricing
+            response_cost = self._calculate_live_api_cost(
+                model=model,
+                usage_metadata=usage_metadata,
+                custom_llm_provider=custom_llm_provider,
+            )
+
+            # Create Usage object for standard LiteLLM logging
+            usage = self._create_usage_object_from_metadata(
+                usage_metadata=usage_metadata,
+                model=model,
+            )
+
+            # Create a mock ModelResponse for standard logging
+            litellm_model_response = ModelResponse(
+                id=f"vertex-ai-live-{start_time.timestamp()}",
+                object="chat.completion",
+                created=int(start_time.timestamp()),
+                model=model,
+                usage=usage,
+                choices=[],
+            )
+
+            # Update kwargs with cost information
+            kwargs["response_cost"] = response_cost
+            kwargs["model"] = model
+            kwargs["custom_llm_provider"] = custom_llm_provider
+
+            # Safely log the model name: only allow known safe formats, redact otherwise.
+            import re
+
+            allowed_pattern = re.compile(r"^[A-Za-z0-9._\-:]+$")
+            safe_model = (
+                model
+                if isinstance(model, str) and allowed_pattern.match(model)
+                else "[REDACTED]"
+            )
+            verbose_proxy_logger.debug(
+                f"Vertex AI Live API passthrough cost tracking - "
+                f"Model: {safe_model}, Cost: ${response_cost:.6f}, "
+                f"Prompt tokens: {usage.prompt_tokens}, "
+                f"Completion tokens: {usage.completion_tokens}"
+            )
+
+            return {
+                "result": litellm_model_response,
+                "kwargs": kwargs,
+            }
+
+        except Exception as e:
+            verbose_proxy_logger.error(
+                f"Error in Vertex AI Live API passthrough handler: {e}"
+            )
+            return {
+                "result": None,
+                "kwargs": kwargs,
+            }

llm-gateway-competitors/litellm-wheel-src/litellm/proxy/pass_through_endpoints/llm_provider_handlers/vertex_passthrough_logging_handler.py

@@ -0,0 +1,851 @@
+import re
+from datetime import datetime
+from typing import TYPE_CHECKING, Any, Dict, List, Optional, Union, cast
+from urllib.parse import urlparse
+
+import httpx
+
+import litellm
+from litellm._logging import verbose_proxy_logger
+from litellm.litellm_core_utils.litellm_logging import Logging as LiteLLMLoggingObj
+from litellm.llms.vertex_ai.gemini.vertex_and_google_ai_studio_gemini import (
+    ModelResponseIterator as VertexModelResponseIterator,
+)
+from litellm.llms.vertex_ai.vector_stores.search_api.transformation import (
+    VertexSearchAPIVectorStoreConfig,
+)
+from litellm.llms.vertex_ai.videos.transformation import VertexAIVideoConfig
+from litellm.proxy._types import PassThroughEndpointLoggingTypedDict
+from litellm.types.utils import (
+    Choices,
+    EmbeddingResponse,
+    ImageResponse,
+    ModelResponse,
+    SpecialEnums,
+    StandardPassThroughResponseObject,
+    TextCompletionResponse,
+)
+
+vertex_search_api_config = VertexSearchAPIVectorStoreConfig()
+if TYPE_CHECKING:
+    from litellm.types.utils import LiteLLMBatch
+
+    from ..success_handler import PassThroughEndpointLogging
+else:
+    PassThroughEndpointLogging = Any
+    LiteLLMBatch = Any
+
+# Define EndpointType locally to avoid import issues
+EndpointType = Any
+
+
+class VertexPassthroughLoggingHandler:
+    @staticmethod
+    def vertex_passthrough_handler(
+        httpx_response: httpx.Response,
+        logging_obj: LiteLLMLoggingObj,
+        url_route: str,
+        result: str,
+        start_time: datetime,
+        end_time: datetime,
+        cache_hit: bool,
+        request_body: Optional[dict] = None,
+        **kwargs,
+    ) -> PassThroughEndpointLoggingTypedDict:
+        if "predictLongRunning" in url_route:
+            model = VertexPassthroughLoggingHandler.extract_model_from_url(url_route)
+
+            vertex_video_config = VertexAIVideoConfig()
+            litellm_video_response = (
+                vertex_video_config.transform_video_create_response(
+                    model=model,
+                    raw_response=httpx_response,
+                    logging_obj=logging_obj,
+                    custom_llm_provider="vertex_ai",
+                    request_data=request_body,
+                )
+            )
+
+            logging_obj.model = model
+            logging_obj.model_call_details["model"] = model
+            logging_obj.model_call_details["custom_llm_provider"] = "vertex_ai"
+            logging_obj.custom_llm_provider = "vertex_ai"
+
+            response_cost = litellm.completion_cost(
+                completion_response=litellm_video_response,
+                model=model,
+                custom_llm_provider="vertex_ai",
+                call_type="create_video",
+            )
+
+            # Set response_cost in _hidden_params to prevent recalculation
+            if not hasattr(litellm_video_response, "_hidden_params"):
+                litellm_video_response._hidden_params = {}
+            litellm_video_response._hidden_params["response_cost"] = response_cost
+
+            kwargs["response_cost"] = response_cost
+            kwargs["model"] = model
+            kwargs["custom_llm_provider"] = "vertex_ai"
+            logging_obj.model_call_details["response_cost"] = response_cost
+
+            return {
+                "result": litellm_video_response,
+                "kwargs": kwargs,
+            }
+
+        elif "generateContent" in url_route:
+            model = VertexPassthroughLoggingHandler.extract_model_from_url(url_route)
+
+            instance_of_vertex_llm = litellm.VertexGeminiConfig()
+            litellm_model_response: ModelResponse = (
+                instance_of_vertex_llm.transform_response(
+                    model=model,
+                    messages=[
+                        {"role": "user", "content": "no-message-pass-through-endpoint"}
+                    ],
+                    raw_response=httpx_response,
+                    model_response=litellm.ModelResponse(),
+                    logging_obj=logging_obj,
+                    optional_params={},
+                    litellm_params={},
+                    api_key="",
+                    request_data={},
+                    encoding=litellm.encoding,
+                )
+            )
+            kwargs = VertexPassthroughLoggingHandler._create_vertex_response_logging_payload_for_generate_content(
+                litellm_model_response=litellm_model_response,
+                model=model,
+                kwargs=kwargs,
+                start_time=start_time,
+                end_time=end_time,
+                logging_obj=logging_obj,
+                custom_llm_provider=VertexPassthroughLoggingHandler._get_custom_llm_provider_from_url(
+                    url_route
+                ),
+            )
+
+            return {
+                "result": litellm_model_response,
+                "kwargs": kwargs,
+            }
+
+        elif "predict" in url_route:
+            return VertexPassthroughLoggingHandler._handle_predict_response(
+                httpx_response=httpx_response,
+                logging_obj=logging_obj,
+                url_route=url_route,
+                kwargs=kwargs,
+            )
+        elif "rawPredict" in url_route or "streamRawPredict" in url_route:
+            from litellm.llms.vertex_ai.vertex_ai_partner_models import (
+                get_vertex_ai_partner_model_config,
+            )
+
+            model = VertexPassthroughLoggingHandler.extract_model_from_url(url_route)
+            vertex_publisher_or_api_spec = VertexPassthroughLoggingHandler._get_vertex_publisher_or_api_spec_from_url(
+                url_route
+            )
+
+            _json_response = httpx_response.json()
+
+            litellm_prediction_response = ModelResponse()
+
+            if vertex_publisher_or_api_spec is not None:
+                vertex_ai_partner_model_config = get_vertex_ai_partner_model_config(
+                    model=model,
+                    vertex_publisher_or_api_spec=vertex_publisher_or_api_spec,
+                )
+                litellm_prediction_response = (
+                    vertex_ai_partner_model_config.transform_response(
+                        model=model,
+                        raw_response=httpx_response,
+                        model_response=litellm_prediction_response,
+                        logging_obj=logging_obj,
+                        request_data={},
+                        encoding=litellm.encoding,
+                        optional_params={},
+                        litellm_params={},
+                        api_key="",
+                        messages=[
+                            {
+                                "role": "user",
+                                "content": "no-message-pass-through-endpoint",
+                            }
+                        ],
+                    )
+                )
+
+            kwargs = VertexPassthroughLoggingHandler._create_vertex_response_logging_payload_for_generate_content(
+                litellm_model_response=litellm_prediction_response,
+                model="vertex_ai/" + model,
+                kwargs=kwargs,
+                start_time=start_time,
+                end_time=end_time,
+                logging_obj=logging_obj,
+                custom_llm_provider="vertex_ai",
+            )
+
+            return {
+                "result": litellm_prediction_response,
+                "kwargs": kwargs,
+            }
+        elif "search" in url_route:
+            litellm_vs_response = (
+                vertex_search_api_config.transform_search_vector_store_response(
+                    response=httpx_response,
+                    litellm_logging_obj=logging_obj,
+                )
+            )
+            response_cost = litellm.completion_cost(
+                completion_response=litellm_vs_response,
+                model="vertex_ai/search_api",
+                custom_llm_provider="vertex_ai",
+                call_type="vector_store_search",
+            )
+
+            standard_pass_through_response_object: StandardPassThroughResponseObject = {
+                "response": cast(dict, litellm_vs_response),
+            }
+
+            kwargs["response_cost"] = response_cost
+            kwargs["model"] = "vertex_ai/search_api"
+            logging_obj.model_call_details.setdefault("litellm_params", {})
+            logging_obj.model_call_details["litellm_params"][
+                "base_model"
+            ] = "vertex_ai/search_api"
+            logging_obj.model_call_details["response_cost"] = response_cost
+
+            return {
+                "result": standard_pass_through_response_object,
+                "kwargs": kwargs,
+            }
+        elif "batchPredictionJobs" in url_route:
+            return VertexPassthroughLoggingHandler.batch_prediction_jobs_handler(
+                httpx_response=httpx_response,
+                logging_obj=logging_obj,
+                url_route=url_route,
+                result=result,
+                start_time=start_time,
+                end_time=end_time,
+                cache_hit=cache_hit,
+                **kwargs,
+            )
+        else:
+            return {
+                "result": None,
+                "kwargs": kwargs,
+            }
+
+    @staticmethod
+    def _handle_predict_response(
+        httpx_response: httpx.Response,
+        logging_obj: LiteLLMLoggingObj,
+        url_route: str,
+        kwargs: dict,
+    ) -> PassThroughEndpointLoggingTypedDict:
+        """Handle predict endpoint responses (embeddings, image generation)."""
+        from litellm.llms.vertex_ai.image_generation.image_generation_handler import (
+            VertexImageGeneration,
+        )
+        from litellm.llms.vertex_ai.multimodal_embeddings.transformation import (
+            VertexAIMultimodalEmbeddingConfig,
+        )
+        from litellm.types.utils import PassthroughCallTypes
+
+        vertex_image_generation_class = VertexImageGeneration()
+
+        model = VertexPassthroughLoggingHandler.extract_model_from_url(url_route)
+
+        _json_response = httpx_response.json()
+
+        litellm_prediction_response: Union[
+            ModelResponse, EmbeddingResponse, ImageResponse
+        ] = ModelResponse()
+        if vertex_image_generation_class.is_image_generation_response(_json_response):
+            litellm_prediction_response = (
+                vertex_image_generation_class.process_image_generation_response(
+                    _json_response,
+                    model_response=litellm.ImageResponse(),
+                    model=model,
+                )
+            )
+
+            logging_obj.call_type = (
+                PassthroughCallTypes.passthrough_image_generation.value
+            )
+        elif VertexPassthroughLoggingHandler._is_multimodal_embedding_response(
+            json_response=_json_response,
+        ):
+            # Use multimodal embedding transformation
+            vertex_multimodal_config = VertexAIMultimodalEmbeddingConfig()
+            litellm_prediction_response = (
+                vertex_multimodal_config.transform_embedding_response(
+                    model=model,
+                    raw_response=httpx_response,
+                    model_response=litellm.EmbeddingResponse(),
+                    logging_obj=logging_obj,
+                    api_key="",
+                    request_data={},
+                    optional_params={},
+                    litellm_params={},
+                )
+            )
+        else:
+            litellm_prediction_response = (
+                litellm.vertexAITextEmbeddingConfig.transform_vertex_response_to_openai(
+                    response=_json_response,
+                    model=model,
+                    model_response=litellm.EmbeddingResponse(),
+                )
+            )
+        if isinstance(litellm_prediction_response, litellm.EmbeddingResponse):
+            litellm_prediction_response.model = model
+
+        logging_obj.model = model
+        logging_obj.model_call_details["model"] = logging_obj.model
+        logging_obj.model_call_details["custom_llm_provider"] = "vertex_ai"
+        logging_obj.custom_llm_provider = "vertex_ai"
+        response_cost = litellm.completion_cost(
+            completion_response=litellm_prediction_response,
+            model=model,
+            custom_llm_provider="vertex_ai",
+        )
+
+        kwargs["response_cost"] = response_cost
+        kwargs["model"] = model
+        kwargs["custom_llm_provider"] = "vertex_ai"
+        logging_obj.model_call_details["response_cost"] = response_cost
+
+        return {
+            "result": litellm_prediction_response,
+            "kwargs": kwargs,
+        }
+
+    @staticmethod
+    def _handle_logging_vertex_collected_chunks(
+        litellm_logging_obj: LiteLLMLoggingObj,
+        passthrough_success_handler_obj: PassThroughEndpointLogging,
+        url_route: str,
+        request_body: dict,
+        endpoint_type: EndpointType,
+        start_time: datetime,
+        all_chunks: List[str],
+        model: Optional[str],
+        end_time: datetime,
+    ) -> PassThroughEndpointLoggingTypedDict:
+        """
+        Takes raw chunks from Vertex passthrough endpoint and logs them in litellm callbacks
+
+        - Builds complete response from chunks
+        - Creates standard logging object
+        - Logs in litellm callbacks
+        """
+        kwargs: Dict[str, Any] = {}
+        model = model or VertexPassthroughLoggingHandler.extract_model_from_url(
+            url_route
+        )
+        complete_streaming_response = (
+            VertexPassthroughLoggingHandler._build_complete_streaming_response(
+                all_chunks=all_chunks,
+                litellm_logging_obj=litellm_logging_obj,
+                model=model,
+                url_route=url_route,
+            )
+        )
+
+        if complete_streaming_response is None:
+            verbose_proxy_logger.error(
+                "Unable to build complete streaming response for Vertex passthrough endpoint, not logging..."
+            )
+            return {
+                "result": None,
+                "kwargs": kwargs,
+            }
+
+        kwargs = VertexPassthroughLoggingHandler._create_vertex_response_logging_payload_for_generate_content(
+            litellm_model_response=complete_streaming_response,
+            model=model,
+            kwargs=kwargs,
+            start_time=start_time,
+            end_time=end_time,
+            logging_obj=litellm_logging_obj,
+            custom_llm_provider=VertexPassthroughLoggingHandler._get_custom_llm_provider_from_url(
+                url_route
+            ),
+        )
+
+        return {
+            "result": complete_streaming_response,
+            "kwargs": kwargs,
+        }
+
+    @staticmethod
+    def _build_complete_streaming_response(
+        all_chunks: List[str],
+        litellm_logging_obj: LiteLLMLoggingObj,
+        model: str,
+        url_route: str,
+    ) -> Optional[Union[ModelResponse, TextCompletionResponse]]:
+        parsed_chunks = []
+        if "generateContent" in url_route or "streamGenerateContent" in url_route:
+            vertex_iterator: Any = VertexModelResponseIterator(
+                streaming_response=None,
+                sync_stream=False,
+                logging_obj=litellm_logging_obj,
+            )
+            chunk_parsing_logic: Any = vertex_iterator._common_chunk_parsing_logic
+            parsed_chunks = [chunk_parsing_logic(chunk) for chunk in all_chunks]
+        elif "rawPredict" in url_route or "streamRawPredict" in url_route:
+            from litellm.llms.anthropic.chat.handler import ModelResponseIterator
+            from litellm.llms.base_llm.base_model_iterator import (
+                BaseModelResponseIterator,
+            )
+
+            vertex_iterator = ModelResponseIterator(
+                streaming_response=None,
+                sync_stream=False,
+            )
+            chunk_parsing_logic = vertex_iterator.chunk_parser
+            for chunk in all_chunks:
+                dict_chunk = BaseModelResponseIterator._string_to_dict_parser(chunk)
+                if dict_chunk is None:
+                    continue
+                parsed_chunks.append(chunk_parsing_logic(dict_chunk))
+        else:
+            return None
+        if len(parsed_chunks) == 0:
+            return None
+        all_openai_chunks = []
+        for parsed_chunk in parsed_chunks:
+            if parsed_chunk is None:
+                continue
+            all_openai_chunks.append(parsed_chunk)
+
+        complete_streaming_response = litellm.stream_chunk_builder(
+            chunks=all_openai_chunks
+        )
+
+        return complete_streaming_response
+
+    @staticmethod
+    def extract_model_from_url(url: str) -> str:
+        pattern = r"/models/([^:]+)"
+        match = re.search(pattern, url)
+        if match:
+            return match.group(1)
+        return "unknown"
+
+    @staticmethod
+    def extract_model_name_from_vertex_path(vertex_model_path: str) -> str:
+        """
+        Extract the actual model name from a Vertex AI model path.
+
+        Examples:
+        - publishers/google/models/gemini-2.5-flash -> gemini-2.5-flash
+        - projects/PROJECT_ID/locations/LOCATION/models/MODEL_ID -> MODEL_ID
+
+        Args:
+            vertex_model_path: The full Vertex AI model path
+
+        Returns:
+            The extracted model name for use with LiteLLM
+        """
+        # Handle publishers/google/models/ format
+        if "publishers/" in vertex_model_path and "models/" in vertex_model_path:
+            # Extract everything after the last models/
+            parts = vertex_model_path.split("models/")
+            if len(parts) > 1:
+                return parts[-1]
+
+        # Handle projects/PROJECT_ID/locations/LOCATION/models/MODEL_ID format
+        elif "projects/" in vertex_model_path and "models/" in vertex_model_path:
+            # Extract everything after the last models/
+            parts = vertex_model_path.split("models/")
+            if len(parts) > 1:
+                return parts[-1]
+
+        # If no recognized pattern, return the original path
+        return vertex_model_path
+
+    @staticmethod
+    def _get_vertex_publisher_or_api_spec_from_url(url: str) -> Optional[str]:
+        # Check for specific Vertex AI partner publishers
+        if "/publishers/mistralai/" in url:
+            return "mistralai"
+        elif "/publishers/anthropic/" in url:
+            return "anthropic"
+        elif "/publishers/ai21/" in url:
+            return "ai21"
+        elif "/endpoints/openapi/" in url:
+            return "openapi"
+        return None
+
+    @staticmethod
+    def _get_custom_llm_provider_from_url(url: str) -> str:
+        parsed_url = urlparse(url)
+        if parsed_url.hostname and parsed_url.hostname.endswith(
+            "generativelanguage.googleapis.com"
+        ):
+            return litellm.LlmProviders.GEMINI.value
+        return litellm.LlmProviders.VERTEX_AI.value
+
+    @staticmethod
+    def _is_multimodal_embedding_response(json_response: dict) -> bool:
+        """
+        Detect if the response is from a multimodal embedding request.
+
+        Check if the response contains multimodal embedding fields:
+            - Docs: https://cloud.google.com/vertex-ai/generative-ai/docs/model-reference/multimodal-embeddings-api#response-body
+
+
+        Args:
+            json_response: The JSON response from Vertex AI
+
+        Returns:
+            bool: True if this is a multimodal embedding response
+        """
+        # Check if response contains multimodal embedding fields
+        if "predictions" in json_response:
+            predictions = json_response["predictions"]
+            for prediction in predictions:
+                if isinstance(prediction, dict):
+                    # Check for multimodal embedding response fields
+                    if any(
+                        key in prediction
+                        for key in [
+                            "textEmbedding",
+                            "imageEmbedding",
+                            "videoEmbeddings",
+                        ]
+                    ):
+                        return True
+
+        return False
+
+    @staticmethod
+    def _create_vertex_response_logging_payload_for_generate_content(
+        litellm_model_response: Union[ModelResponse, TextCompletionResponse],
+        model: str,
+        kwargs: dict,
+        start_time: datetime,
+        end_time: datetime,
+        logging_obj: LiteLLMLoggingObj,
+        custom_llm_provider: str,
+    ) -> dict:
+        """
+        Create the standard logging object for Vertex passthrough generateContent (streaming and non-streaming)
+
+        """
+
+        response_cost = litellm.completion_cost(
+            completion_response=litellm_model_response,
+            model=model,
+            custom_llm_provider="vertex_ai",
+        )
+
+        kwargs["response_cost"] = response_cost
+        kwargs["model"] = model
+
+        # pretty print standard logging object
+        verbose_proxy_logger.debug("kwargs= %s", kwargs)
+
+        # set litellm_call_id to logging response object
+        litellm_model_response.id = logging_obj.litellm_call_id
+        logging_obj.model = litellm_model_response.model or model
+        logging_obj.model_call_details["model"] = logging_obj.model
+        logging_obj.model_call_details["custom_llm_provider"] = custom_llm_provider
+        return kwargs
+
+    @staticmethod
+    def batch_prediction_jobs_handler(  # noqa: PLR0915
+        httpx_response: httpx.Response,
+        logging_obj: LiteLLMLoggingObj,
+        url_route: str,
+        result: str,
+        start_time: datetime,
+        end_time: datetime,
+        cache_hit: bool,
+        **kwargs,
+    ) -> PassThroughEndpointLoggingTypedDict:
+        """
+        Handle batch prediction jobs passthrough logging.
+        Creates a managed object for cost tracking when batch job is successfully created.
+        """
+        import base64
+
+        from litellm._uuid import uuid
+        from litellm.llms.vertex_ai.batches.transformation import (
+            VertexAIBatchTransformation,
+        )
+
+        try:
+            _json_response = httpx_response.json()
+
+            # Only handle successful batch job creation (POST requests)
+            if httpx_response.status_code == 200 and "name" in _json_response:
+                # Transform Vertex AI response to LiteLLM batch format
+                litellm_batch_response = VertexAIBatchTransformation.transform_vertex_ai_batch_response_to_openai_batch_response(
+                    response=_json_response
+                )
+
+                # Extract batch ID and model from the response
+                batch_id = VertexAIBatchTransformation._get_batch_id_from_vertex_ai_batch_response(
+                    _json_response
+                )
+                model_name = _json_response.get("model", "unknown")
+
+                # Create unified object ID for tracking
+                # Format: base64(litellm_proxy;model_id:{};llm_batch_id:{})
+                actual_model_id = (
+                    VertexPassthroughLoggingHandler.get_actual_model_id_from_router(
+                        model_name
+                    )
+                )
+
+                unified_id_string = (
+                    SpecialEnums.LITELLM_MANAGED_BATCH_COMPLETE_STR.value.format(
+                        actual_model_id, batch_id
+                    )
+                )
+                unified_object_id = (
+                    base64.urlsafe_b64encode(unified_id_string.encode())
+                    .decode()
+                    .rstrip("=")
+                )
+
+                # Store the managed object for cost tracking
+                # This will be picked up by check_batch_cost polling mechanism
+                VertexPassthroughLoggingHandler._store_batch_managed_object(
+                    unified_object_id=unified_object_id,
+                    batch_object=litellm_batch_response,
+                    model_object_id=batch_id,
+                    logging_obj=logging_obj,
+                    **kwargs,
+                )
+
+                # Create a batch job response for logging
+                litellm_model_response = ModelResponse()
+                litellm_model_response.id = str(uuid.uuid4())
+                litellm_model_response.model = model_name
+                litellm_model_response.object = "batch_prediction_job"
+                litellm_model_response.created = int(start_time.timestamp())
+
+                # Add batch-specific metadata to indicate this is a pending batch job
+                litellm_model_response.choices = [
+                    Choices(
+                        finish_reason="stop",
+                        index=0,
+                        message={
+                            "role": "assistant",
+                            "content": f"Batch prediction job {batch_id} created and is pending. Status will be updated when the batch completes.",
+                            "tool_calls": None,
+                            "function_call": None,
+                            "provider_specific_fields": {
+                                "batch_job_id": batch_id,
+                                "batch_job_state": "JOB_STATE_PENDING",
+                                "unified_object_id": unified_object_id,
+                            },
+                        },
+                    )
+                ]
+
+                # Set response cost to 0 initially (will be updated when batch completes)
+                response_cost = 0.0
+                kwargs["response_cost"] = response_cost
+                kwargs["model"] = model_name
+                kwargs["batch_id"] = batch_id
+                kwargs["unified_object_id"] = unified_object_id
+                kwargs["batch_job_state"] = "JOB_STATE_PENDING"
+
+                logging_obj.model = model_name
+                logging_obj.model_call_details["model"] = logging_obj.model
+                logging_obj.model_call_details["response_cost"] = response_cost
+                logging_obj.model_call_details["batch_id"] = batch_id
+
+                return {
+                    "result": litellm_model_response,
+                    "kwargs": kwargs,
+                }
+            else:
+                # Handle non-successful responses
+                litellm_model_response = ModelResponse()
+                litellm_model_response.id = str(uuid.uuid4())
+                litellm_model_response.model = "vertex_ai_batch"
+                litellm_model_response.object = "batch_prediction_job"
+                litellm_model_response.created = int(start_time.timestamp())
+
+                # Add error-specific metadata
+                litellm_model_response.choices = [
+                    Choices(
+                        finish_reason="stop",
+                        index=0,
+                        message={
+                            "role": "assistant",
+                            "content": f"Batch prediction job creation failed. Status: {httpx_response.status_code}",
+                            "tool_calls": None,
+                            "function_call": None,
+                            "provider_specific_fields": {
+                                "batch_job_state": "JOB_STATE_FAILED",
+                                "status_code": httpx_response.status_code,
+                            },
+                        },
+                    )
+                ]
+
+                kwargs["response_cost"] = 0.0
+                kwargs["model"] = "vertex_ai_batch"
+                kwargs["batch_job_state"] = "JOB_STATE_FAILED"
+
+                return {
+                    "result": litellm_model_response,
+                    "kwargs": kwargs,
+                }
+
+        except Exception as e:
+            verbose_proxy_logger.error(f"Error in batch_prediction_jobs_handler: {e}")
+            # Return basic response on error
+            litellm_model_response = ModelResponse()
+            litellm_model_response.id = str(uuid.uuid4())
+            litellm_model_response.model = "vertex_ai_batch"
+            litellm_model_response.object = "batch_prediction_job"
+            litellm_model_response.created = int(start_time.timestamp())
+
+            # Add error-specific metadata
+            litellm_model_response.choices = [
+                Choices(
+                    finish_reason="stop",
+                    index=0,
+                    message={
+                        "role": "assistant",
+                        "content": f"Error creating batch prediction job: {str(e)}",
+                        "tool_calls": None,
+                        "function_call": None,
+                        "provider_specific_fields": {
+                            "batch_job_state": "JOB_STATE_FAILED",
+                            "error": str(e),
+                        },
+                    },
+                )
+            ]
+
+            kwargs["response_cost"] = 0.0
+            kwargs["model"] = "vertex_ai_batch"
+            kwargs["batch_job_state"] = "JOB_STATE_FAILED"
+
+            return {
+                "result": litellm_model_response,
+                "kwargs": kwargs,
+            }
+
+    @staticmethod
+    def _store_batch_managed_object(
+        unified_object_id: str,
+        batch_object: LiteLLMBatch,
+        model_object_id: str,
+        logging_obj: LiteLLMLoggingObj,
+        **kwargs,
+    ) -> None:
+        """
+        Store batch managed object for cost tracking.
+        This will be picked up by the check_batch_cost polling mechanism.
+        """
+        try:
+            # Get the managed files hook from the logging object
+            # This is a bit of a hack, but we need access to the proxy logging system
+            from litellm.proxy.proxy_server import proxy_logging_obj
+
+            managed_files_hook = proxy_logging_obj.get_proxy_hook("managed_files")
+            if managed_files_hook is not None and hasattr(
+                managed_files_hook, "store_unified_object_id"
+            ):
+                # Create a mock user API key dict for the managed object storage
+                from litellm.proxy._types import LitellmUserRoles, UserAPIKeyAuth
+
+                user_api_key_dict = UserAPIKeyAuth(
+                    user_id=kwargs.get("user_id", "default-user"),
+                    api_key="",
+                    team_id=None,
+                    team_alias=None,
+                    user_role=LitellmUserRoles.CUSTOMER,  # Use proper enum value
+                    user_email=None,
+                    max_budget=None,
+                    spend=0.0,  # Set to 0.0 instead of None
+                    models=[],  # Set to empty list instead of None
+                    tpm_limit=None,
+                    rpm_limit=None,
+                    budget_duration=None,
+                    budget_reset_at=None,
+                    max_parallel_requests=None,
+                    allowed_model_region=None,
+                    metadata={},  # Set to empty dict instead of None
+                    key_alias=None,
+                    permissions={},  # Set to empty dict instead of None
+                    model_max_budget={},  # Set to empty dict instead of None
+                    model_spend={},  # Set to empty dict instead of None
+                )
+
+                # Store the unified object for batch cost tracking
+                import asyncio
+
+                asyncio.create_task(
+                    managed_files_hook.store_unified_object_id(  # type: ignore
+                        unified_object_id=unified_object_id,
+                        file_object=batch_object,
+                        litellm_parent_otel_span=None,
+                        model_object_id=model_object_id,
+                        file_purpose="batch",
+                        user_api_key_dict=user_api_key_dict,
+                    )
+                )
+
+                verbose_proxy_logger.info(
+                    f"Stored batch managed object with unified_object_id={unified_object_id}, batch_id={model_object_id}"
+                )
+            else:
+                verbose_proxy_logger.warning(
+                    "Managed files hook not available, cannot store batch object for cost tracking"
+                )
+
+        except Exception as e:
+            verbose_proxy_logger.error(f"Error storing batch managed object: {e}")
+
+    @staticmethod
+    def get_actual_model_id_from_router(model_name: str) -> str:
+        from litellm.proxy.proxy_server import llm_router
+
+        if llm_router is not None:
+            # Try to find the model in the router by the extracted model name
+            extracted_model_name = (
+                VertexPassthroughLoggingHandler.extract_model_name_from_vertex_path(
+                    model_name
+                )
+            )
+
+            # Use the existing get_model_ids method from router
+            model_ids = llm_router.get_model_ids(model_name=extracted_model_name)
+            if model_ids and len(model_ids) > 0:
+                # Use the first model ID found
+                actual_model_id = model_ids[0]
+                verbose_proxy_logger.info(
+                    f"Found model ID in router: {actual_model_id}"
+                )
+                return actual_model_id
+            else:
+                # Fallback to constructed model name
+                actual_model_id = extracted_model_name
+                verbose_proxy_logger.warning(
+                    f"Model not found in router, using constructed name: {actual_model_id}"
+                )
+                return actual_model_id
+        else:
+            # Fallback if router is not available
+            extracted_model_name = (
+                VertexPassthroughLoggingHandler.extract_model_name_from_vertex_path(
+                    model_name
+                )
+            )
+            verbose_proxy_logger.warning(
+                f"Router not available, using constructed model name: {extracted_model_name}"
+            )
+            return extracted_model_name

llm-gateway-competitors/litellm-wheel-src/litellm/proxy/pass_through_endpoints/passthrough_endpoint_router.py

@@ -0,0 +1,212 @@
+from typing import Dict, Optional
+
+import litellm
+from litellm._logging import verbose_router_logger
+from litellm.integrations.vector_store_integrations.vector_store_pre_call_hook import (
+    LiteLLM_ManagedVectorStore,
+)
+from litellm.secret_managers.main import get_secret_str
+from litellm.types.llms.vertex_ai import VERTEX_CREDENTIALS_TYPES
+from litellm.types.passthrough_endpoints.vertex_ai import VertexPassThroughCredentials
+
+
+class PassthroughEndpointRouter:
+    """
+    Use this class to Set/Get credentials for pass-through endpoints
+    """
+
+    def __init__(self):
+        self.credentials: Dict[str, str] = {}
+        self.deployment_key_to_vertex_credentials: Dict[
+            str, VertexPassThroughCredentials
+        ] = {}
+        self.default_vertex_config: Optional[VertexPassThroughCredentials] = None
+
+    def set_pass_through_credentials(
+        self,
+        custom_llm_provider: str,
+        api_base: Optional[str],
+        api_key: Optional[str],
+    ):
+        """
+        Set credentials for a pass-through endpoint. Used when a user adds a pass-through LLM endpoint on the UI.
+
+        Args:
+            custom_llm_provider: The provider of the pass-through endpoint
+            api_base: The base URL of the pass-through endpoint
+            api_key: The API key for the pass-through endpoint
+        """
+        credential_name = self._get_credential_name_for_provider(
+            custom_llm_provider=custom_llm_provider,
+            region_name=self._get_region_name_from_api_base(
+                api_base=api_base, custom_llm_provider=custom_llm_provider
+            ),
+        )
+        if api_key is None:
+            raise ValueError("api_key is required for setting pass-through credentials")
+        self.credentials[credential_name] = api_key
+
+    def get_credentials(
+        self,
+        custom_llm_provider: str,
+        region_name: Optional[str],
+    ) -> Optional[str]:
+        credential_name = self._get_credential_name_for_provider(
+            custom_llm_provider=custom_llm_provider,
+            region_name=region_name,
+        )
+        verbose_router_logger.debug(
+            f"Pass-through llm endpoints router, looking for credentials for {credential_name}"
+        )
+        if credential_name in self.credentials:
+            verbose_router_logger.debug(f"Found credentials for {credential_name}")
+            return self.credentials[credential_name]
+        else:
+            verbose_router_logger.debug(
+                f"No credentials found for {credential_name}, looking for env variable"
+            )
+            _env_variable_name = (
+                self._get_default_env_variable_name_passthrough_endpoint(
+                    custom_llm_provider=custom_llm_provider,
+                )
+            )
+            return get_secret_str(_env_variable_name)
+
+    def _get_vertex_env_vars(self) -> VertexPassThroughCredentials:
+        """
+        Helper to get vertex pass through config from environment variables
+
+        The following environment variables are used:
+        - DEFAULT_VERTEXAI_PROJECT (project id)
+        - DEFAULT_VERTEXAI_LOCATION (location)
+        - DEFAULT_GOOGLE_APPLICATION_CREDENTIALS (path to credentials file)
+        """
+        return VertexPassThroughCredentials(
+            vertex_project=get_secret_str("DEFAULT_VERTEXAI_PROJECT"),
+            vertex_location=get_secret_str("DEFAULT_VERTEXAI_LOCATION"),
+            vertex_credentials=get_secret_str("DEFAULT_GOOGLE_APPLICATION_CREDENTIALS"),
+        )
+
+    def set_default_vertex_config(self, config: Optional[dict] = None):
+        """Sets vertex configuration from provided config and/or environment variables
+
+        Args:
+            config (Optional[dict]): Configuration dictionary
+            Example: {
+                "vertex_project": "my-project-123",
+                "vertex_location": "us-central1",
+                "vertex_credentials": "os.environ/GOOGLE_CREDS"
+            }
+        """
+        # Initialize config dictionary if None
+        if config is None:
+            self.default_vertex_config = self._get_vertex_env_vars()
+            return
+
+        if isinstance(config, dict):
+            for key, value in config.items():
+                if isinstance(value, str) and value.startswith("os.environ/"):
+                    config[key] = get_secret_str(value)
+
+        self.default_vertex_config = VertexPassThroughCredentials(**config)
+
+    def add_vertex_credentials(
+        self,
+        project_id: str,
+        location: str,
+        vertex_credentials: Optional[VERTEX_CREDENTIALS_TYPES],
+    ):
+        """
+        Add the vertex credentials for the given project-id, location
+        """
+
+        deployment_key = self._get_deployment_key(
+            project_id=project_id,
+            location=location,
+        )
+        if deployment_key is None:
+            verbose_router_logger.debug(
+                "No deployment key found for project-id, location"
+            )
+            return
+        vertex_pass_through_credentials = VertexPassThroughCredentials(
+            vertex_project=project_id,
+            vertex_location=location,
+            vertex_credentials=vertex_credentials,
+        )
+        self.deployment_key_to_vertex_credentials[
+            deployment_key
+        ] = vertex_pass_through_credentials
+
+    def _get_deployment_key(
+        self, project_id: Optional[str], location: Optional[str]
+    ) -> Optional[str]:
+        """
+        Get the deployment key for the given project-id, location
+        """
+        if project_id is None or location is None:
+            return None
+        return f"{project_id}-{location}"
+
+    def get_vector_store_credentials(
+        self, vector_store_id: str
+    ) -> Optional[LiteLLM_ManagedVectorStore]:
+        """
+        Get the vector store credentials for the given vector store id
+        """
+        if litellm.vector_store_registry is None:
+            return None
+        vector_store_to_run: Optional[
+            LiteLLM_ManagedVectorStore
+        ] = litellm.vector_store_registry.get_litellm_managed_vector_store_from_registry(
+            vector_store_id=vector_store_id
+        )
+        return vector_store_to_run
+
+    def get_vertex_credentials(
+        self, project_id: Optional[str], location: Optional[str]
+    ) -> Optional[VertexPassThroughCredentials]:
+        """
+        Get the vertex credentials for the given project-id, location
+        """
+        deployment_key = self._get_deployment_key(
+            project_id=project_id,
+            location=location,
+        )
+
+        if deployment_key is None:
+            return self.default_vertex_config
+        if deployment_key in self.deployment_key_to_vertex_credentials:
+            return self.deployment_key_to_vertex_credentials[deployment_key]
+        else:
+            return self.default_vertex_config
+
+    def _get_credential_name_for_provider(
+        self,
+        custom_llm_provider: str,
+        region_name: Optional[str],
+    ) -> str:
+        if region_name is None:
+            return f"{custom_llm_provider.upper()}_API_KEY"
+        return f"{custom_llm_provider.upper()}_{region_name.upper()}_API_KEY"
+
+    def _get_region_name_from_api_base(
+        self,
+        custom_llm_provider: str,
+        api_base: Optional[str],
+    ) -> Optional[str]:
+        """
+        Get the region name from the API base.
+
+        Each provider might have a different way of specifying the region in the API base - this is where you can use conditional logic to handle that.
+        """
+        if custom_llm_provider == "assemblyai":
+            if api_base and "eu" in api_base:
+                return "eu"
+        return None
+
+    @staticmethod
+    def _get_default_env_variable_name_passthrough_endpoint(
+        custom_llm_provider: str,
+    ) -> str:
+        return f"{custom_llm_provider.upper()}_API_KEY"

llm-gateway-competitors/litellm-wheel-src/litellm/proxy/pass_through_endpoints/passthrough_guardrails.py

@@ -0,0 +1,335 @@
+"""
+Passthrough Guardrails Helper Module
+
+Handles guardrail execution for passthrough endpoints with:
+- Opt-in model (guardrails only run when explicitly configured)
+- Field-level targeting using JSONPath expressions
+- Automatic inheritance from org/team/key levels when enabled
+"""
+
+from typing import Any, Dict, List, Optional, Union
+
+from litellm._logging import verbose_proxy_logger
+from litellm.proxy._types import (
+    PassThroughGuardrailsConfig,
+    PassThroughGuardrailSettings,
+    UserAPIKeyAuth,
+)
+from litellm.proxy.pass_through_endpoints.jsonpath_extractor import JsonPathExtractor
+
+# Type for raw guardrails config input (before normalization)
+# Can be a list of names or a dict with settings
+PassThroughGuardrailsConfigInput = Union[
+    List[str],  # Simple list: ["guard-1", "guard-2"]
+    PassThroughGuardrailsConfig,  # Dict: {"guard-1": {"request_fields": [...]}}
+]
+
+
+class PassthroughGuardrailHandler:
+    """
+    Handles guardrail execution for passthrough endpoints.
+
+    Passthrough endpoints use an opt-in model for guardrails:
+    - Guardrails only run when explicitly configured on the endpoint
+    - Supports field-level targeting using JSONPath expressions
+    - Automatically inherits org/team/key level guardrails when enabled
+
+    Guardrails can be specified as:
+    - List format (simple): ["guardrail-1", "guardrail-2"]
+    - Dict format (with settings): {"guardrail-1": {"request_fields": ["query"]}}
+    """
+
+    @staticmethod
+    def normalize_config(
+        guardrails_config: Optional[PassThroughGuardrailsConfigInput],
+    ) -> Optional[PassThroughGuardrailsConfig]:
+        """
+        Normalize guardrails config to dict format.
+
+        Accepts:
+        - List of guardrail names: ["g1", "g2"] -> {"g1": None, "g2": None}
+        - Dict with settings: {"g1": {"request_fields": [...]}}
+        - None: returns None
+        """
+        if guardrails_config is None:
+            return None
+
+        # Already a dict - return as-is
+        if isinstance(guardrails_config, dict):
+            return guardrails_config
+
+        # List of guardrail names - convert to dict
+        if isinstance(guardrails_config, list):
+            return {name: None for name in guardrails_config}
+
+        verbose_proxy_logger.debug(
+            "Passthrough guardrails config is not a dict or list, got: %s",
+            type(guardrails_config),
+        )
+        return None
+
+    @staticmethod
+    def is_enabled(
+        guardrails_config: Optional[PassThroughGuardrailsConfigInput],
+    ) -> bool:
+        """
+        Check if guardrails are enabled for a passthrough endpoint.
+
+        Passthrough endpoints are opt-in only - guardrails only run when
+        the guardrails config is set with at least one guardrail.
+        """
+        normalized = PassthroughGuardrailHandler.normalize_config(guardrails_config)
+        if normalized is None:
+            return False
+        return len(normalized) > 0
+
+    @staticmethod
+    def get_guardrail_names(
+        guardrails_config: Optional[PassThroughGuardrailsConfigInput],
+    ) -> List[str]:
+        """Get the list of guardrail names configured for a passthrough endpoint."""
+        normalized = PassthroughGuardrailHandler.normalize_config(guardrails_config)
+        if normalized is None:
+            return []
+        return list(normalized.keys())
+
+    @staticmethod
+    def get_settings(
+        guardrails_config: Optional[PassThroughGuardrailsConfigInput],
+        guardrail_name: str,
+    ) -> Optional[PassThroughGuardrailSettings]:
+        """Get settings for a specific guardrail from the passthrough config."""
+        normalized = PassthroughGuardrailHandler.normalize_config(guardrails_config)
+        if normalized is None:
+            return None
+
+        settings = normalized.get(guardrail_name)
+        if settings is None:
+            return None
+
+        if isinstance(settings, dict):
+            return PassThroughGuardrailSettings(**settings)
+
+        return settings
+
+    @staticmethod
+    def prepare_input(
+        request_data: dict,
+        guardrail_settings: Optional[PassThroughGuardrailSettings],
+    ) -> str:
+        """
+        Prepare input text for guardrail execution based on field targeting settings.
+
+        If request_fields is specified, extracts only those fields.
+        Otherwise, uses the entire request payload as text.
+        """
+        if guardrail_settings is None or guardrail_settings.request_fields is None:
+            from litellm.litellm_core_utils.safe_json_dumps import safe_dumps
+
+            return safe_dumps(request_data)
+
+        return JsonPathExtractor.extract_fields(
+            data=request_data,
+            jsonpath_expressions=guardrail_settings.request_fields,
+        )
+
+    @staticmethod
+    def prepare_output(
+        response_data: dict,
+        guardrail_settings: Optional[PassThroughGuardrailSettings],
+    ) -> str:
+        """
+        Prepare output text for guardrail execution based on field targeting settings.
+
+        If response_fields is specified, extracts only those fields.
+        Otherwise, uses the entire response payload as text.
+        """
+        if guardrail_settings is None or guardrail_settings.response_fields is None:
+            from litellm.litellm_core_utils.safe_json_dumps import safe_dumps
+
+            return safe_dumps(response_data)
+
+        return JsonPathExtractor.extract_fields(
+            data=response_data,
+            jsonpath_expressions=guardrail_settings.response_fields,
+        )
+
+    @staticmethod
+    async def execute(
+        request_data: dict,
+        user_api_key_dict: UserAPIKeyAuth,
+        guardrails_config: Optional[PassThroughGuardrailsConfig],
+        event_type: str = "pre_call",
+    ) -> dict:
+        """
+        Execute guardrails for a passthrough endpoint.
+
+        This is the main entry point for passthrough guardrail execution.
+
+        Args:
+            request_data: The request payload
+            user_api_key_dict: User API key authentication info
+            guardrails_config: Passthrough-specific guardrails configuration
+            event_type: "pre_call" for request, "post_call" for response
+
+        Returns:
+            The potentially modified request_data
+
+        Raises:
+            HTTPException if a guardrail blocks the request
+        """
+        if not PassthroughGuardrailHandler.is_enabled(guardrails_config):
+            verbose_proxy_logger.debug(
+                "Passthrough guardrails not enabled, skipping guardrail execution"
+            )
+            return request_data
+
+        guardrail_names = PassthroughGuardrailHandler.get_guardrail_names(
+            guardrails_config
+        )
+        verbose_proxy_logger.debug(
+            "Executing passthrough guardrails: %s", guardrail_names
+        )
+
+        # Add to request metadata so guardrails know which to run
+        from litellm.proxy.pass_through_endpoints.passthrough_context import (
+            set_passthrough_guardrails_config,
+        )
+
+        if "metadata" not in request_data:
+            request_data["metadata"] = {}
+
+        # Set guardrails in metadata using dict format for compatibility
+        request_data["metadata"]["guardrails"] = {
+            name: True for name in guardrail_names
+        }
+
+        # Store passthrough guardrails config in request-scoped context
+        set_passthrough_guardrails_config(guardrails_config)
+
+        return request_data
+
+    @staticmethod
+    def collect_guardrails(
+        user_api_key_dict: UserAPIKeyAuth,
+        passthrough_guardrails_config: Optional[PassThroughGuardrailsConfigInput],
+    ) -> Optional[Dict[str, bool]]:
+        """
+        Collect guardrails for a passthrough endpoint.
+
+        Passthrough endpoints are opt-in only for guardrails. Guardrails only run when
+        the guardrails config is set with at least one guardrail.
+
+        Accepts both list and dict formats:
+        - List: ["guardrail-1", "guardrail-2"]
+        - Dict: {"guardrail-1": {"request_fields": [...]}}
+
+        When enabled, this function collects:
+        - Passthrough-specific guardrails from the config
+        - Org/team/key level guardrails (automatic inheritance when passthrough is enabled)
+
+        Args:
+            user_api_key_dict: User API key authentication info
+            passthrough_guardrails_config: List or Dict of guardrail names/settings
+
+        Returns:
+            Dict of guardrail names to run (format: {guardrail_name: True}), or None
+        """
+        from litellm.proxy.litellm_pre_call_utils import (
+            _add_guardrails_from_key_or_team_metadata,
+        )
+
+        # Normalize config to dict format (handles both list and dict)
+        normalized_config = PassthroughGuardrailHandler.normalize_config(
+            passthrough_guardrails_config
+        )
+
+        if normalized_config is None:
+            verbose_proxy_logger.debug(
+                "Passthrough guardrails not configured, skipping guardrail collection"
+            )
+            return None
+
+        if len(normalized_config) == 0:
+            verbose_proxy_logger.debug(
+                "Passthrough guardrails config is empty, skipping"
+            )
+            return None
+
+        # Passthrough is enabled - collect guardrails
+        guardrails_to_run: Dict[str, bool] = {}
+
+        # Add passthrough-specific guardrails
+        for guardrail_name in normalized_config.keys():
+            guardrails_to_run[guardrail_name] = True
+            verbose_proxy_logger.debug(
+                "Added passthrough-specific guardrail: %s", guardrail_name
+            )
+
+        # Add org/team/key level guardrails using shared helper
+        temp_data: Dict[str, Any] = {"metadata": {}}
+        _add_guardrails_from_key_or_team_metadata(
+            key_metadata=user_api_key_dict.metadata,
+            team_metadata=user_api_key_dict.team_metadata,
+            data=temp_data,
+            metadata_variable_name="metadata",
+        )
+
+        # Merge inherited guardrails into guardrails_to_run
+        inherited_guardrails = temp_data["metadata"].get("guardrails", [])
+        for guardrail_name in inherited_guardrails:
+            if guardrail_name not in guardrails_to_run:
+                guardrails_to_run[guardrail_name] = True
+                verbose_proxy_logger.debug(
+                    "Added inherited guardrail (key/team level): %s", guardrail_name
+                )
+
+        verbose_proxy_logger.debug(
+            "Collected guardrails for passthrough endpoint: %s",
+            list(guardrails_to_run.keys()),
+        )
+
+        return guardrails_to_run if guardrails_to_run else None
+
+    @staticmethod
+    def get_field_targeted_text(
+        data: dict,
+        guardrail_name: str,
+        is_request: bool = True,
+    ) -> Optional[str]:
+        """
+        Get the text to check for a guardrail, respecting field targeting settings.
+
+        Called by guardrail hooks to get the appropriate text based on
+        passthrough field targeting configuration.
+
+        Args:
+            data: The request/response data dict
+            guardrail_name: Name of the guardrail being executed
+            is_request: True for request (pre_call), False for response (post_call)
+
+        Returns:
+            The text to check, or None to use default behavior
+        """
+        from litellm.proxy.pass_through_endpoints.passthrough_context import (
+            get_passthrough_guardrails_config,
+        )
+
+        passthrough_config = get_passthrough_guardrails_config()
+        if passthrough_config is None:
+            return None
+
+        settings = PassthroughGuardrailHandler.get_settings(
+            passthrough_config, guardrail_name
+        )
+        if settings is None:
+            return None
+
+        if is_request:
+            if settings.request_fields:
+                return JsonPathExtractor.extract_fields(data, settings.request_fields)
+        else:
+            if settings.response_fields:
+                return JsonPathExtractor.extract_fields(data, settings.response_fields)
+
+        return None

llm-gateway-competitors/litellm-wheel-src/litellm/proxy/pass_through_endpoints/streaming_handler.py

@@ -0,0 +1,248 @@
+import asyncio
+from datetime import datetime
+from typing import List, Optional
+
+import httpx
+
+import litellm
+from litellm._logging import verbose_proxy_logger
+from litellm.litellm_core_utils.litellm_logging import Logging as LiteLLMLoggingObj
+from litellm.litellm_core_utils.thread_pool_executor import executor
+from litellm.proxy._types import PassThroughEndpointLoggingResultValues
+from litellm.proxy.common_request_processing import ProxyBaseLLMRequestProcessing
+from litellm.types.passthrough_endpoints.pass_through_endpoints import EndpointType
+from litellm.types.utils import StandardPassThroughResponseObject
+
+from .llm_provider_handlers.anthropic_passthrough_logging_handler import (
+    AnthropicPassthroughLoggingHandler,
+)
+from .llm_provider_handlers.openai_passthrough_logging_handler import (
+    OpenAIPassthroughLoggingHandler,
+)
+from .llm_provider_handlers.vertex_passthrough_logging_handler import (
+    VertexPassthroughLoggingHandler,
+)
+from .success_handler import PassThroughEndpointLogging
+
+
+class PassThroughStreamingHandler:
+    @staticmethod
+    async def chunk_processor(
+        response: httpx.Response,
+        request_body: Optional[dict],
+        litellm_logging_obj: LiteLLMLoggingObj,
+        endpoint_type: EndpointType,
+        start_time: datetime,
+        passthrough_success_handler_obj: PassThroughEndpointLogging,
+        url_route: str,
+    ):
+        """
+        - Yields chunks from the response
+        - Collect non-empty chunks for post-processing (logging)
+        - Inject cost into chunks if include_cost_in_streaming_usage is enabled
+        """
+        try:
+            raw_bytes: List[bytes] = []
+            # Extract model name for cost injection
+            model_name = PassThroughStreamingHandler._extract_model_for_cost_injection(
+                request_body=request_body,
+                url_route=url_route,
+                endpoint_type=endpoint_type,
+                litellm_logging_obj=litellm_logging_obj,
+            )
+
+            async for chunk in response.aiter_bytes():
+                raw_bytes.append(chunk)
+                if (
+                    getattr(litellm, "include_cost_in_streaming_usage", False)
+                    and model_name
+                ):
+                    if endpoint_type == EndpointType.VERTEX_AI:
+                        # Only handle streamRawPredict (uses Anthropic format)
+                        if "streamRawPredict" in url_route or "rawPredict" in url_route:
+                            modified_chunk = ProxyBaseLLMRequestProcessing._process_chunk_with_cost_injection(
+                                chunk, model_name
+                            )
+                            if modified_chunk is not None:
+                                chunk = modified_chunk
+                    elif endpoint_type == EndpointType.ANTHROPIC:
+                        modified_chunk = ProxyBaseLLMRequestProcessing._process_chunk_with_cost_injection(
+                            chunk, model_name
+                        )
+                        if modified_chunk is not None:
+                            chunk = modified_chunk
+
+                yield chunk
+
+            # After all chunks are processed, handle post-processing
+            end_time = datetime.now()
+
+            asyncio.create_task(
+                PassThroughStreamingHandler._route_streaming_logging_to_handler(
+                    litellm_logging_obj=litellm_logging_obj,
+                    passthrough_success_handler_obj=passthrough_success_handler_obj,
+                    url_route=url_route,
+                    request_body=request_body or {},
+                    endpoint_type=endpoint_type,
+                    start_time=start_time,
+                    raw_bytes=raw_bytes,
+                    end_time=end_time,
+                )
+            )
+        except Exception as e:
+            verbose_proxy_logger.error(f"Error in chunk_processor: {str(e)}")
+            raise
+
+    @staticmethod
+    async def _route_streaming_logging_to_handler(
+        litellm_logging_obj: LiteLLMLoggingObj,
+        passthrough_success_handler_obj: PassThroughEndpointLogging,
+        url_route: str,
+        request_body: dict,
+        endpoint_type: EndpointType,
+        start_time: datetime,
+        raw_bytes: List[bytes],
+        end_time: datetime,
+        model: Optional[str] = None,
+    ):
+        """
+        Route the logging for the collected chunks to the appropriate handler
+
+        Supported endpoint types:
+        - Anthropic
+        - Vertex AI
+        - OpenAI
+        """
+        try:
+            all_chunks = PassThroughStreamingHandler._convert_raw_bytes_to_str_lines(
+                raw_bytes
+            )
+            standard_logging_response_object: Optional[
+                PassThroughEndpointLoggingResultValues
+            ] = None
+            kwargs: dict = {}
+            if endpoint_type == EndpointType.ANTHROPIC:
+                anthropic_passthrough_logging_handler_result = AnthropicPassthroughLoggingHandler._handle_logging_anthropic_collected_chunks(
+                    litellm_logging_obj=litellm_logging_obj,
+                    passthrough_success_handler_obj=passthrough_success_handler_obj,
+                    url_route=url_route,
+                    request_body=request_body,
+                    endpoint_type=endpoint_type,
+                    start_time=start_time,
+                    all_chunks=all_chunks,
+                    end_time=end_time,
+                )
+                standard_logging_response_object = (
+                    anthropic_passthrough_logging_handler_result["result"]
+                )
+                kwargs = anthropic_passthrough_logging_handler_result["kwargs"]
+            elif endpoint_type == EndpointType.VERTEX_AI:
+                vertex_passthrough_logging_handler_result = VertexPassthroughLoggingHandler._handle_logging_vertex_collected_chunks(
+                    litellm_logging_obj=litellm_logging_obj,
+                    passthrough_success_handler_obj=passthrough_success_handler_obj,
+                    url_route=url_route,
+                    request_body=request_body,
+                    endpoint_type=endpoint_type,
+                    start_time=start_time,
+                    all_chunks=all_chunks,
+                    end_time=end_time,
+                    model=model,
+                )
+                standard_logging_response_object = (
+                    vertex_passthrough_logging_handler_result["result"]
+                )
+                kwargs = vertex_passthrough_logging_handler_result["kwargs"]
+            elif endpoint_type == EndpointType.OPENAI:
+                openai_passthrough_logging_handler_result = OpenAIPassthroughLoggingHandler._handle_logging_openai_collected_chunks(
+                    litellm_logging_obj=litellm_logging_obj,
+                    passthrough_success_handler_obj=passthrough_success_handler_obj,
+                    url_route=url_route,
+                    request_body=request_body,
+                    endpoint_type=endpoint_type,
+                    start_time=start_time,
+                    all_chunks=all_chunks,
+                    end_time=end_time,
+                )
+                standard_logging_response_object = (
+                    openai_passthrough_logging_handler_result["result"]
+                )
+                kwargs = openai_passthrough_logging_handler_result["kwargs"]
+
+            if standard_logging_response_object is None:
+                standard_logging_response_object = StandardPassThroughResponseObject(
+                    response=f"cannot parse chunks to standard response object. Chunks={all_chunks}"
+                )
+            await litellm_logging_obj.async_success_handler(
+                result=standard_logging_response_object,
+                start_time=start_time,
+                end_time=end_time,
+                cache_hit=False,
+                **kwargs,
+            )
+            if (
+                litellm_logging_obj._should_run_sync_callbacks_for_async_calls()
+                is False
+            ):
+                return
+
+            executor.submit(
+                litellm_logging_obj.success_handler,
+                result=standard_logging_response_object,
+                end_time=end_time,
+                cache_hit=False,
+                start_time=start_time,
+                **kwargs,
+            )
+        except Exception as e:
+            verbose_proxy_logger.error(
+                f"Error in _route_streaming_logging_to_handler: {str(e)}"
+            )
+
+    @staticmethod
+    def _extract_model_for_cost_injection(
+        request_body: Optional[dict],
+        url_route: str,
+        endpoint_type: EndpointType,
+        litellm_logging_obj: LiteLLMLoggingObj,
+    ) -> Optional[str]:
+        """
+        Extract model name for cost injection from various sources.
+        """
+        # Try to get model from request body
+        if request_body:
+            model = request_body.get("model")
+            if model:
+                return model
+
+        # Try to get model from logging object
+        if hasattr(litellm_logging_obj, "model_call_details"):
+            model = litellm_logging_obj.model_call_details.get("model")
+            if model:
+                return model
+
+        # For Vertex AI, try to extract from URL
+        if endpoint_type == EndpointType.VERTEX_AI:
+            model = VertexPassthroughLoggingHandler.extract_model_from_url(url_route)
+            if model and model != "unknown":
+                return model
+
+        return None
+
+    @staticmethod
+    def _convert_raw_bytes_to_str_lines(raw_bytes: List[bytes]) -> List[str]:
+        """
+        Converts a list of raw bytes into a list of string lines, similar to aiter_lines()
+
+        Args:
+            raw_bytes: List of bytes chunks from aiter.bytes()
+
+        Returns:
+            List of string lines, with each line being a complete data: {} chunk
+        """
+        # Combine all bytes and decode to string
+        combined_str = b"".join(raw_bytes).decode("utf-8")
+
+        # Split by newlines and filter out empty lines
+        lines = [line.strip() for line in combined_str.split("\n") if line.strip()]
+
+        return lines

llm-gateway-competitors/litellm-wheel-src/litellm/proxy/pass_through_endpoints/success_handler.py

@@ -0,0 +1,494 @@
+import json
+from datetime import datetime
+from typing import Any, Optional, Union
+from urllib.parse import urlparse
+
+import httpx
+
+from litellm.litellm_core_utils.litellm_logging import Logging as LiteLLMLoggingObj
+from litellm.proxy._types import PassThroughEndpointLoggingResultValues
+from litellm.types.passthrough_endpoints.pass_through_endpoints import (
+    PassthroughStandardLoggingPayload,
+)
+from litellm.types.utils import StandardPassThroughResponseObject
+from litellm.utils import executor as thread_pool_executor
+
+from .llm_provider_handlers.anthropic_passthrough_logging_handler import (
+    AnthropicPassthroughLoggingHandler,
+)
+from .llm_provider_handlers.assembly_passthrough_logging_handler import (
+    AssemblyAIPassthroughLoggingHandler,
+)
+from .llm_provider_handlers.cohere_passthrough_logging_handler import (
+    CoherePassthroughLoggingHandler,
+)
+from .llm_provider_handlers.cursor_passthrough_logging_handler import (
+    CursorPassthroughLoggingHandler,
+)
+from .llm_provider_handlers.gemini_passthrough_logging_handler import (
+    GeminiPassthroughLoggingHandler,
+)
+from .llm_provider_handlers.vertex_passthrough_logging_handler import (
+    VertexPassthroughLoggingHandler,
+)
+
+cohere_passthrough_logging_handler = CoherePassthroughLoggingHandler()
+
+
+class PassThroughEndpointLogging:
+    def __init__(self):
+        self.TRACKED_VERTEX_ROUTES = [
+            "generateContent",
+            "streamGenerateContent",
+            "predict",
+            "rawPredict",
+            "streamRawPredict",
+            "search",
+            "batchPredictionJobs",
+            "predictLongRunning",
+        ]
+
+        # Anthropic
+        self.TRACKED_ANTHROPIC_ROUTES = ["/messages", "/v1/messages/batches"]
+
+        # Cohere
+        self.TRACKED_COHERE_ROUTES = ["/v2/chat", "/v1/embed"]
+        self.assemblyai_passthrough_logging_handler = (
+            AssemblyAIPassthroughLoggingHandler()
+        )
+
+        # Langfuse
+        self.TRACKED_LANGFUSE_ROUTES = ["/langfuse/"]
+
+        # Gemini
+        self.TRACKED_GEMINI_ROUTES = [
+            "generateContent",
+            "streamGenerateContent",
+            "predictLongRunning",
+        ]
+
+        # Cursor Cloud Agents
+        self.TRACKED_CURSOR_ROUTES = [
+            "/v0/agents",
+            "/v0/me",
+            "/v0/models",
+            "/v0/repositories",
+        ]
+
+        # Vertex AI Live API WebSocket
+        self.TRACKED_VERTEX_AI_LIVE_ROUTES = ["/vertex_ai/live"]
+
+    async def _handle_logging(
+        self,
+        logging_obj: LiteLLMLoggingObj,
+        standard_logging_response_object: Union[
+            StandardPassThroughResponseObject,
+            PassThroughEndpointLoggingResultValues,
+            dict,
+        ],
+        result: str,
+        start_time: datetime,
+        end_time: datetime,
+        cache_hit: bool,
+        **kwargs,
+    ):
+        """Helper function to handle both sync and async logging operations"""
+        # Submit to thread pool for sync logging
+        thread_pool_executor.submit(
+            logging_obj.success_handler,
+            standard_logging_response_object,
+            start_time,
+            end_time,
+            cache_hit,
+            **kwargs,
+        )
+
+        # Handle async logging
+        await logging_obj.async_success_handler(
+            result=(
+                json.dumps(result)
+                if isinstance(result, dict)
+                else standard_logging_response_object
+            ),
+            start_time=start_time,
+            end_time=end_time,
+            cache_hit=False,
+            **kwargs,
+        )
+
+    def normalize_llm_passthrough_logging_payload(
+        self,
+        httpx_response: httpx.Response,
+        response_body: Optional[dict],
+        request_body: dict,
+        logging_obj: LiteLLMLoggingObj,
+        url_route: str,
+        result: str,
+        start_time: datetime,
+        end_time: datetime,
+        cache_hit: bool,
+        custom_llm_provider: Optional[str] = None,
+        **kwargs,
+    ):
+        return_dict = {
+            "standard_logging_response_object": None,
+            "kwargs": kwargs,
+        }
+        standard_logging_response_object: Optional[Any] = None
+
+        if self.is_gemini_route(url_route, custom_llm_provider):
+            gemini_passthrough_logging_handler_result = (
+                GeminiPassthroughLoggingHandler.gemini_passthrough_handler(
+                    httpx_response=httpx_response,
+                    response_body=response_body or {},
+                    logging_obj=logging_obj,
+                    url_route=url_route,
+                    result=result,
+                    start_time=start_time,
+                    end_time=end_time,
+                    cache_hit=cache_hit,
+                    request_body=request_body,
+                    **kwargs,
+                )
+            )
+            standard_logging_response_object = (
+                gemini_passthrough_logging_handler_result["result"]
+            )
+            kwargs = gemini_passthrough_logging_handler_result["kwargs"]
+        elif self.is_vertex_route(url_route):
+            vertex_passthrough_logging_handler_result = (
+                VertexPassthroughLoggingHandler.vertex_passthrough_handler(
+                    httpx_response=httpx_response,
+                    logging_obj=logging_obj,
+                    url_route=url_route,
+                    result=result,
+                    start_time=start_time,
+                    end_time=end_time,
+                    cache_hit=cache_hit,
+                    request_body=request_body,
+                    **kwargs,
+                )
+            )
+            standard_logging_response_object = (
+                vertex_passthrough_logging_handler_result["result"]
+            )
+            kwargs = vertex_passthrough_logging_handler_result["kwargs"]
+        elif self.is_anthropic_route(url_route):
+            anthropic_passthrough_logging_handler_result = (
+                AnthropicPassthroughLoggingHandler.anthropic_passthrough_handler(
+                    httpx_response=httpx_response,
+                    response_body=response_body or {},
+                    logging_obj=logging_obj,
+                    url_route=url_route,
+                    result=result,
+                    start_time=start_time,
+                    end_time=end_time,
+                    cache_hit=cache_hit,
+                    request_body=request_body,
+                    **kwargs,
+                )
+            )
+
+            standard_logging_response_object = (
+                anthropic_passthrough_logging_handler_result["result"]
+            )
+            kwargs = anthropic_passthrough_logging_handler_result["kwargs"]
+        elif self.is_cohere_route(url_route):
+            cohere_passthrough_logging_handler_result = (
+                cohere_passthrough_logging_handler.cohere_passthrough_handler(
+                    httpx_response=httpx_response,
+                    response_body=response_body or {},
+                    logging_obj=logging_obj,
+                    url_route=url_route,
+                    result=result,
+                    start_time=start_time,
+                    end_time=end_time,
+                    cache_hit=cache_hit,
+                    request_body=request_body,
+                    **kwargs,
+                )
+            )
+            standard_logging_response_object = (
+                cohere_passthrough_logging_handler_result["result"]
+            )
+            kwargs = cohere_passthrough_logging_handler_result["kwargs"]
+        elif self.is_openai_route(url_route) and self._is_supported_openai_endpoint(
+            url_route
+        ):
+            from .llm_provider_handlers.openai_passthrough_logging_handler import (
+                OpenAIPassthroughLoggingHandler,
+            )
+
+            openai_passthrough_logging_handler_result = (
+                OpenAIPassthroughLoggingHandler.openai_passthrough_handler(
+                    httpx_response=httpx_response,
+                    response_body=response_body or {},
+                    logging_obj=logging_obj,
+                    url_route=url_route,
+                    result=result,
+                    start_time=start_time,
+                    end_time=end_time,
+                    cache_hit=cache_hit,
+                    request_body=request_body,
+                    **kwargs,
+                )
+            )
+            standard_logging_response_object = (
+                openai_passthrough_logging_handler_result["result"]
+            )
+            kwargs = openai_passthrough_logging_handler_result["kwargs"]
+
+        elif self.is_cursor_route(url_route, custom_llm_provider):
+            cursor_passthrough_logging_handler_result = (
+                CursorPassthroughLoggingHandler.cursor_passthrough_handler(
+                    httpx_response=httpx_response,
+                    response_body=response_body or {},
+                    logging_obj=logging_obj,
+                    url_route=url_route,
+                    result=result,
+                    start_time=start_time,
+                    end_time=end_time,
+                    cache_hit=cache_hit,
+                    request_body=request_body,
+                    **kwargs,
+                )
+            )
+            standard_logging_response_object = (
+                cursor_passthrough_logging_handler_result["result"]
+            )
+            kwargs = cursor_passthrough_logging_handler_result["kwargs"]
+        elif self.is_vertex_ai_live_route(url_route):
+            from .llm_provider_handlers.vertex_ai_live_passthrough_logging_handler import (
+                VertexAILivePassthroughLoggingHandler,
+            )
+
+            vertex_ai_live_handler = VertexAILivePassthroughLoggingHandler()
+
+            # For WebSocket responses, response_body should be a list of messages
+            websocket_messages: list[dict[str, Any]] = (
+                response_body if isinstance(response_body, list) else []
+            )
+
+            vertex_ai_live_handler_result = (
+                vertex_ai_live_handler.vertex_ai_live_passthrough_handler(
+                    websocket_messages=websocket_messages,
+                    logging_obj=logging_obj,
+                    url_route=url_route,
+                    start_time=start_time,
+                    end_time=end_time,
+                    request_body=request_body,
+                    **kwargs,
+                )
+            )
+
+            standard_logging_response_object = vertex_ai_live_handler_result["result"]
+            kwargs = vertex_ai_live_handler_result["kwargs"]
+        return_dict[
+            "standard_logging_response_object"
+        ] = standard_logging_response_object
+
+        return_dict["kwargs"] = kwargs
+        return return_dict
+
+    async def pass_through_async_success_handler(
+        self,
+        httpx_response: httpx.Response,
+        response_body: Optional[dict],
+        logging_obj: LiteLLMLoggingObj,
+        url_route: str,
+        result: str,
+        start_time: datetime,
+        end_time: datetime,
+        cache_hit: bool,
+        request_body: dict,
+        passthrough_logging_payload: PassthroughStandardLoggingPayload,
+        custom_llm_provider: Optional[str] = None,
+        **kwargs,
+    ):
+        standard_logging_response_object: Optional[
+            PassThroughEndpointLoggingResultValues
+        ] = None
+        logging_obj.model_call_details[
+            "passthrough_logging_payload"
+        ] = passthrough_logging_payload
+        if self.is_assemblyai_route(url_route):
+            if (
+                AssemblyAIPassthroughLoggingHandler._should_log_request(
+                    httpx_response.request.method
+                )
+                is not True
+            ):
+                return
+            self.assemblyai_passthrough_logging_handler.assemblyai_passthrough_logging_handler(
+                httpx_response=httpx_response,
+                response_body=response_body or {},
+                logging_obj=logging_obj,
+                url_route=url_route,
+                result=result,
+                start_time=start_time,
+                end_time=end_time,
+                cache_hit=cache_hit,
+                **kwargs,
+            )
+            return
+        elif self.is_langfuse_route(url_route):
+            # Don't log langfuse pass-through requests
+            return
+        else:
+            normalized_llm_passthrough_logging_payload = (
+                self.normalize_llm_passthrough_logging_payload(
+                    httpx_response=httpx_response,
+                    response_body=response_body,
+                    request_body=request_body,
+                    logging_obj=logging_obj,
+                    url_route=url_route,
+                    result=result,
+                    start_time=start_time,
+                    end_time=end_time,
+                    cache_hit=cache_hit,
+                    custom_llm_provider=custom_llm_provider,
+                    **kwargs,
+                )
+            )
+            standard_logging_response_object = (
+                normalized_llm_passthrough_logging_payload[
+                    "standard_logging_response_object"
+                ]
+            )
+            kwargs = normalized_llm_passthrough_logging_payload["kwargs"]
+        if standard_logging_response_object is None:
+            standard_logging_response_object = StandardPassThroughResponseObject(
+                response=httpx_response.text
+            )
+
+        kwargs = self._set_cost_per_request(
+            logging_obj=logging_obj,
+            passthrough_logging_payload=passthrough_logging_payload,
+            kwargs=kwargs,
+        )
+
+        await self._handle_logging(
+            logging_obj=logging_obj,
+            standard_logging_response_object=standard_logging_response_object,
+            result=result,
+            start_time=start_time,
+            end_time=end_time,
+            cache_hit=cache_hit,
+            standard_pass_through_logging_payload=passthrough_logging_payload,
+            **kwargs,
+        )
+
+    def is_vertex_route(self, url_route: str):
+        for route in self.TRACKED_VERTEX_ROUTES:
+            if route in url_route:
+                return True
+        return False
+
+    def is_anthropic_route(self, url_route: str):
+        for route in self.TRACKED_ANTHROPIC_ROUTES:
+            if route in url_route:
+                return True
+        return False
+
+    def is_cohere_route(self, url_route: str):
+        for route in self.TRACKED_COHERE_ROUTES:
+            if route in url_route:
+                return True
+
+    def is_assemblyai_route(self, url_route: str):
+        parsed_url = urlparse(url_route)
+        if parsed_url.hostname == "api.assemblyai.com":
+            return True
+        elif "/transcript" in parsed_url.path:
+            return True
+        return False
+
+    def is_langfuse_route(self, url_route: str):
+        parsed_url = urlparse(url_route)
+        for route in self.TRACKED_LANGFUSE_ROUTES:
+            if route in parsed_url.path:
+                return True
+        return False
+
+    def is_vertex_ai_live_route(self, url_route: str):
+        """Check if the URL route is a Vertex AI Live API WebSocket route."""
+        if not url_route:
+            return False
+        for route in self.TRACKED_VERTEX_AI_LIVE_ROUTES:
+            if route in url_route:
+                return True
+        return False
+
+    def is_cursor_route(
+        self, url_route: str, custom_llm_provider: Optional[str] = None
+    ):
+        """Check if the URL route is a Cursor Cloud Agents API route."""
+        if custom_llm_provider == "cursor":
+            return True
+        parsed_url = urlparse(url_route)
+        if parsed_url.hostname and "api.cursor.com" in parsed_url.hostname:
+            return True
+        for route in self.TRACKED_CURSOR_ROUTES:
+            if route in url_route:
+                path = parsed_url.path if parsed_url.scheme else url_route
+                if path.startswith("/v0/"):
+                    return custom_llm_provider == "cursor"
+        return False
+
+    def is_openai_route(self, url_route: str):
+        """Check if the URL route is an OpenAI API route."""
+        if not url_route:
+            return False
+        parsed_url = urlparse(url_route)
+        return parsed_url.hostname and (
+            "api.openai.com" in parsed_url.hostname
+            or "openai.azure.com" in parsed_url.hostname
+        )
+
+    def is_gemini_route(
+        self, url_route: str, custom_llm_provider: Optional[str] = None
+    ):
+        """Check if the URL route is a Gemini API route."""
+        for route in self.TRACKED_GEMINI_ROUTES:
+            if route in url_route and custom_llm_provider == "gemini":
+                return True
+        return False
+
+    def _is_supported_openai_endpoint(self, url_route: str) -> bool:
+        """Check if the OpenAI endpoint is supported by the passthrough logging handler."""
+        from .llm_provider_handlers.openai_passthrough_logging_handler import (
+            OpenAIPassthroughLoggingHandler,
+        )
+
+        return (
+            OpenAIPassthroughLoggingHandler.is_openai_chat_completions_route(url_route)
+            or OpenAIPassthroughLoggingHandler.is_openai_image_generation_route(
+                url_route
+            )
+            or OpenAIPassthroughLoggingHandler.is_openai_image_editing_route(url_route)
+        )
+
+    def _set_cost_per_request(
+        self,
+        logging_obj: LiteLLMLoggingObj,
+        passthrough_logging_payload: PassthroughStandardLoggingPayload,
+        kwargs: dict,
+    ):
+        """
+        Helper function to set the cost per request in the logging object
+
+        Only set the cost per request if it's set in the passthrough logging payload.
+        If it's not set, don't set it in the logging object.
+        """
+        #########################################################
+        # Check if cost per request is set
+        #########################################################
+        if passthrough_logging_payload.get("cost_per_request") is not None:
+            kwargs["response_cost"] = passthrough_logging_payload.get(
+                "cost_per_request"
+            )
+            logging_obj.model_call_details[
+                "response_cost"
+            ] = passthrough_logging_payload.get("cost_per_request")
+
+        return kwargs