BerriAI/litellm · error · HTTPException

The following model(s) do not exist or are not accessible: {

Error message

The following model(s) do not exist or are not accessible: {}

What it means

Batch access check on a comma-separated model list: one or more requested model ids are not in the caller's available_models (not deployed on the proxy or not permitted for this key/team). The inaccessible ids are listed in the message so the caller can drop or request access for them.

Source

Thrown at litellm/proxy/utils.py:7079

    available_models: list[str],
) -> None:
    """
    Validate that a model is accessible to the user.
    Supports batch requests with comma-separated model IDs.

    Args:
        model_id: The model ID to validate (can be comma-separated for batch requests)
        available_models: List of models available to the user

    Raises:
        HTTPException: If the model is not accessible
    """
    # Handle batch requests with comma-separated models
    if "," in model_id:
        models: Final = [m.strip() for m in model_id.split(",")]
        inaccessible_models: Final = [m for m in models if m not in available_models]
        if inaccessible_models:
            raise HTTPException(
                status_code=404,
                detail="The following model(s) do not exist or are not accessible: {}".format(
                    ", ".join(inaccessible_models)
                ),
            )
    else:
        # Single model validation
        if model_id not in available_models:
            raise HTTPException(
                status_code=404,
                detail=f"The model `{model_id}` does not exist or is not accessible",
            )


_PRESERVED_NONE_FIELDS: Final[list[tuple[str, str]]] = [
    ("message", "content"),  # null when tool_calls present (issue #6677)
    ("message", "role"),  # always required by OpenAI spec
    ("delta", "content"),  # null in streaming chunks

View on GitHub (pinned to 77b7c6c40c)

Solutions

1. Check that the listed models exist in the proxy model_list and that your key/team has access to them.

When it happens

Trigger: Thrown at litellm/proxy/utils.py:7079 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of BerriAI/litellm@77b7c6c40c (2026-08-18). Data as JSON: /api/errors/d5d92b686f2d3aa1. Report an issue: GitHub.