t() :: %ExOpenAI.Components.CreateChatCompletionResponse{
  choices: [
    %{
      finish_reason: :function_call | :length | :stop,
      index: integer(),
      message: ExOpenAI.Components.ChatCompletionResponseMessage.t()
    }
  ],
  created: integer(),
  id: String.t(),
  model: String.t(),
  object: String.t(),
  usage:
    %{
      completion_tokens: integer(),
      prompt_tokens: integer(),
      total_tokens: integer()
    }
    | nil
}