BerriAI/litellm · error · ValueError

Parameter {k} is not supported for model {model}. Supported

Error message

Parameter {k} is not supported for model {model}. Supported parameters are {supported_params}. Set drop_params=True to drop unsupported parameters.

What it means

Error "Parameter {k} is not supported for model {model}. Supported parameters are {supported_params}. Set drop_params=True to drop unsupported parameters." thrown in BerriAI/litellm.

Source

Thrown at litellm/llms/fal_ai/image_generation/bria_transformation.py:85

                    mapped_key = param_mapping.get(k, k)
                    mapped_value = non_default_params[k]

                    # Transform specific parameters
                    if k == "response_format":
                        # Bria always returns URLs, so we can ignore this
                        continue
                    elif k == "n":
                        # Bria doesn't support multiple images, ignore
                        continue
                    elif k == "size":
                        # Map OpenAI size format to Bria aspect ratio
                        mapped_value = self._map_aspect_ratio(mapped_value)

                    optional_params[mapped_key] = mapped_value
                elif drop_params:
                    pass
                else:
                    raise ValueError(
                        f"Parameter {k} is not supported for model {model}. Supported parameters are {supported_params}. Set drop_params=True to drop unsupported parameters."
                    )

        return optional_params

    def _map_aspect_ratio(self, size: str) -> str:
        """
        Map OpenAI size format to Bria aspect ratio format.

        OpenAI format: "1024x1024", "1792x1024", etc.
        Bria format: "1:1", "2:3", "3:2", "3:4", "4:3", "4:5", "5:4", "9:16", "16:9"
        """
        # Map common OpenAI sizes to Bria aspect ratios
        size_to_aspect_ratio: Final = {
            "1024x1024": "1:1",
            "512x512": "1:1",
            "1792x1024": "16:9",
            "1024x1792": "9:16",

View on GitHub (pinned to 6c2dcb801b)

Solutions

1. Remove the unsupported parameter or set drop_params=True.

When it happens

Trigger: Thrown at litellm/llms/fal_ai/image_generation/bria_transformation.py:85 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of BerriAI/litellm@6c2dcb801b (2026-08-15). Data as JSON: /api/errors/d026704fe78cdb96. Report an issue: GitHub.