# respond(to:options:contextOptions:metadata:) Produces a response to a prompt. ``` @discardableResult nonisolated(nonsending) final func respond(to prompt: Prompt, options: GenerationOptions = GenerationOptions(), contextOptions: ContextOptions = ContextOptions(), metadata: [String : any ConvertibleToGeneratedContent] = [:]) async throws -> LanguageModelSession.Response ``` ## Parameters `prompt` A prompt for the model to respond to. `options` Options that control how tokens are sampled from the distribution the model produces. `contextOptions` Settings that configure how the model is prompted. `metadata` Metadata to attach to the request. ## Return Value A string composed of the tokens produced by sampling model output. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)