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/recraft_v3_transformation.py:85

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

                    # Transform specific parameters
                    if k == "response_format":
                        # Recraft always returns URLs, so we can ignore this
                        continue
                    elif k == "n":
                        # Recraft doesn't support multiple images, ignore
                        continue
                    elif k == "size":
                        # Map OpenAI size format to Recraft image_size
                        mapped_value = self._map_image_size(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_image_size(self, size: str) -> Any:
        """
        Map OpenAI size format to Recraft v3 image_size format.

        OpenAI format: "1024x1024", "1792x1024", etc.
        Recraft format: Can be preset strings or {"width": int, "height": int}

        Available presets:
        - square_hd (default)
        - square
        - portrait_4_3
        - portrait_16_9
        - landscape_4_3

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/recraft_v3_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/2724d899eeea4ac1. Report an issue: GitHub.