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LiteLLMModel

Constructor for LiteLLM backend with OpenAI compatibility. Parameters:
  • model_type (Union[ModelType, str]): Model for which a backend is created, such as GPT-3.5-turbo, Claude-2, etc.
  • model_config_dict (Optional[Dict[str, Any]], optional): A dictionary that will be fed into:obj:completion(). If:obj:None, :obj:LiteLLMConfig().as_dict() will be used. (default: :obj:None)
  • api_key (Optional[str], optional): The API key for authenticating with the model service. (default: :obj:None)
  • url (Optional[str], optional): The url to the model service. (default: :obj:None)
  • token_counter (Optional[BaseTokenCounter], optional): Token counter to use for the model. If not provided, :obj:LiteLLMTokenCounter will be used. (default: :obj:None)
  • timeout (Optional[float], optional): The timeout value in seconds for API calls. If not provided, will fall back to the MODEL_TIMEOUT environment variable or default to 180 seconds. (default: :obj:None) **kwargs (Any): Additional arguments to pass to the client initialization.

init

_convert_response_from_litellm_to_openai

Converts a response from the LiteLLM format to the OpenAI format. Parameters:
  • response (LiteLLMResponse): The response object from LiteLLM.
Returns: ChatCompletion: The response object in OpenAI’s format.

token_counter

Returns: BaseTokenCounter: The token counter following the model’s tokenization style.

_run

Runs inference of LiteLLM chat completion. Parameters:
  • messages (List[OpenAIMessage]): Message list with the chat history in OpenAI format.
Returns: ChatCompletion