@type model() :: AI.Model.t()

@type msg_response() :: {:ok, :msg, String.t(), usage()}

@type msgs() :: [map()]

@type response() :: msg_response() | tool_response() | {:error, map()}

@type tool_response() :: {:ok, :tool, [map()]}

@type tools() :: nil | [AI.Tools.tool_spec()]

@type usage() :: integer()