Vercel AI SDK Has a Free AI Toolkit — Stream LLM Responses in React with 3 Lines

Vercel AI SDK is a TypeScript toolkit for building AI applications — stream LLM responses, manage conversations, and call tools with type safety. What You Get for Free Streaming — stream tokens to the UI as they're generated useChat hook — complete chat UI state management in React useCompletion — text completion with streaming Tool calling — type-safe function calling with any LLM Multi-provider — OpenAI, Anthropic, Google, Mistral, Groq, Ollama Structured output — Zod schema validation on LLM responses Middleware — logging, caching, rate limiting Edge-ready — works on Vercel Edge, Cloudflare Workers Quick Start npm install ai @ai-sdk/openai // app/api/chat/route.ts (Next.js) import { openai } from ' @ai-sdk/openai ' import { streamText } from ' ai ' export async function POST ( req : Request ) { const { messages } = await req . json () const result = streamText ({ model : openai ( ' gpt-4o ' ), messages , }) return result . toDataStreamResponse () } // app/page.tsx ' use client ' imp