AnthropicTextRequest model.
@type t() :: %ExBifrost.Model.AnthropicTextRequest{ fallbacks: [String.t()] | nil, max_tokens_to_sample: integer(), model: String.t(), prompt: String.t(), stop_sequences: [String.t()] | nil, stream: boolean() | nil, temperature: number() | nil, top_k: integer() | nil, top_p: number() | nil }