litellm/llms/openrouter/chat/transformation.py

"""
Support for OpenAI's `/v1/chat/completions` endpoint. 

Calls done in OpenAI/openai.py as OpenRouter is openai-compatible.

Docs: https://openrouter.ai/docs/parameters
"""

from ...openai.chat.gpt_transformation import OpenAIGPTConfig


class OpenrouterConfig(OpenAIGPTConfig):

    def map_openai_params(
        self,
        non_default_params: dict,
        optional_params: dict,
        model: str,
        drop_params: bool,
    ) -> dict:
        mapped_openai_params = super().map_openai_params(
            non_default_params, optional_params, model, drop_params
        )

        # OpenRouter-only parameters
        extra_body = {}
        transforms = non_default_params.pop("transforms", None)
        models = non_default_params.pop("models", None)
        route = non_default_params.pop("route", None)
        if transforms is not None:
            extra_body["transforms"] = transforms
        if models is not None:
            extra_body["models"] = models
        if route is not None:
            extra_body["route"] = route
        mapped_openai_params["extra_body"] = (
            extra_body  # openai client supports `extra_body` param
        )
        return mapped_openai_params