Vercel AI SDK Has a Free Toolkit for Building AI-Powered UIs in React

Building a ChatGPT-like interface means handling streaming responses, managing conversation state, dealing with function calling, and connecting to different LLM providers. The Vercel AI SDK handles all of this in a few lines of code. What Vercel AI SDK Gives You for Free useChat hook — streaming chat UI in one line useCompletion hook — text completion with streaming streamText / generateText — server-side LLM calls Tool calling — let LLMs execute functions Multi-provider — OpenAI, Anthropic, Google, Mistral, Ollama, and more Structured output — type-safe JSON from LLMs with Zod schemas Works with Next.js, SvelteKit, Nuxt, SolidStart, Express Quick Start npm install ai @ai-sdk/openai Chat Interface in 10 Lines Server (Next.js API route): // app/api/chat/route.ts 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 ' )