Ai_provider.Call_optionsSourceUnified input options for both generate and stream calls.
type t = {prompt : Prompt.message list;mode : Mode.t;tools : Tool.t list;tool_choice : Tool_choice.t option;max_output_tokens : int option;temperature : float option;top_p : float option;top_k : int option;stop_sequences : string list;seed : int option;frequency_penalty : float option;presence_penalty : float option;provider_options : Provider_options.t;headers : (string * string) list;abort_signal : unit Lwt.t option;}Create call options with sensible defaults. Only prompt is required.