BerriAI/litellm · error · ValueError

Failed to parse Anthropic batch response: {e}

Error message

Failed to parse Anthropic batch response: {e}

What it means

Error "Failed to parse Anthropic batch response: {e}" thrown in BerriAI/litellm.

Source

Thrown at litellm/llms/anthropic/batches/transformation.py:157

        For Anthropic, the URL is constructed by get_retrieve_batch_url(),
        so this method returns an empty dict (no additional request params needed).
        """
        # No additional request params needed - URL is handled by get_retrieve_batch_url
        return {}

    def transform_retrieve_batch_response(
        self,
        model: str | None,
        raw_response: httpx.Response,
        logging_obj: LoggingClass,
        litellm_params: dict,
    ) -> LiteLLMBatch:
        """Transform Anthropic MessageBatch retrieval response to LiteLLM format."""
        try:
            response_data: Final = raw_response.json()
        except Exception as e:
            raise ValueError(f"Failed to parse Anthropic batch response: {e}")

        # Map Anthropic MessageBatch to OpenAI Batch format
        batch_id: Final = response_data.get("id", "")
        processing_status: Final = response_data.get("processing_status", "in_progress")

        # Map Anthropic processing_status to OpenAI status
        status_mapping: dict[
            str,
            Literal[
                "validating",
                "failed",
                "in_progress",
                "finalizing",
                "completed",
                "expired",
                "cancelling",
                "cancelled",
            ],

View on GitHub (pinned to 6c2dcb801b)

Solutions

1. Check the Anthropic batch response format; see the wrapped exception.

When it happens

Trigger: Thrown at litellm/llms/anthropic/batches/transformation.py:157 when the library encounters an invalid state.

Common situations: See trigger scenarios.

Understand the failure class

• Parsing and encoding errors: unexpected token, malformed input — why parsers reject input and how to find the real culprit.

AI-assisted analysis of BerriAI/litellm@6c2dcb801b (2026-08-15). Data as JSON: /api/errors/554d33aae942e900. Report an issue: GitHub.