vercel-ai-sdk

Use when integrating AI/LLM features with the Vercel AI SDK — streaming responses, tool calling, multi-provider support, or building chat interfaces. Also use when building AI-powered features in Next.js or React applications.

Model	Source
sonnet	pack: ai

Full Reference

┏━ 🔧 vercel-ai-sdk ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓ ┃ Use when integrating AI/LLM features with the … ┃ ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛

Vercel AI SDK

SDK version 6.x (2026). Package ai with provider adapters (@ai-sdk/anthropic, @ai-sdk/openai, @ai-sdk/google, etc.) and React hooks via @ai-sdk/react. Providers auto-read their env vars — no explicit initialization config needed for basic use.

Quick Reference

Fact	Value
Install	`npm install ai @ai-sdk/anthropic @ai-sdk/openai @ai-sdk/google @ai-sdk/react`
Docs	https://ai-sdk.dev
Anthropic env var	`ANTHROPIC_API_KEY`
OpenAI env var	`OPENAI_API_KEY`
Google env var	`GOOGLE_GENERATIVE_AI_API_KEY`
Deprecated	`generateObject`, `streamObject` — use `Output.*` API instead
v6 breaking change	`useChat` requires `DefaultChatTransport`; `sendMessage({ text })` replaces `handleSubmit`; `isLoading` removed

Reference Index

I want to…	File
Install, set env vars, and set up a route handler	`reference/setup.md`
Stream text or handle full stream events	`reference/streaming.md`
Call tools, run multi-step agents, or render tool UI	`reference/tool-use.md`
Generate structured output with Output.object(), arrays, or classification	`reference/structured-output.md`
Build a chat UI with useChat or useCompletion	`reference/chat-ui.md`
Configure multiple providers, custom aliases, or edge runtime	`reference/provider-config.md`
Handle errors, catch by type, or retry with backoff	`reference/error-handling.md`

Usage: Read the reference file matching your current task from the index above. Each file is self-contained with code examples and inline gotchas.