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Universal AI layer for building frameworks and agents

A unified TypeScript SDK for building AI apps with modern streaming, fallbacks, and multi-model support—powered by Vercel

$npm install ai
Run it with
import { generateText } from 'ai';


const { text } = await generateText({
  model: "anthropic/claude-sonnet-4.6",
  prompt: 'Explain the concept of quantum entanglement.',
});


console.log(text);
Explain quantum entanglement in simple terms.
Quantum entanglement is when two particles become linked so that measuring one instantly affects the other, no matter the distance between them.

See all supported LLM models

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Models supported

The Framework Agnostic AI Toolkit

The open-source AI toolkit designed to help developers build AI-powered applications and agents with React, Next.js, Vue, Svelte, Node.js, and more.

Multi-provider support. Switch providers with one line of code.
Streaming that just works. Real-time responses without custom parsing.
Built-in fallbacks.
Reliable production behavior by default.
generate-text.ts
Run it with
import { generateText } from 'ai';


const { text } = await generateText({
  model: "openai/gpt-5.4",
  prompt: 'Explain the concept of quantum entanglement.',
});


console.log(text);
Go to playground

Supports

+ 16 providers

Scale with confidence

Plug the AI SDK into an entire ecosystem designed for the way modern AI applications that scale.

Vercel AI Gateway

Access 100+ models with no markup or having to manage multiple API keys.

npm i ai

Vercel Sandbox

Run agent generated code securely and at scale.

npm i @vercel/sandbox

Workflows NEW

Build long running AI agents and apps that can suspend, resume, and survive function timeouts.

npm i workflow

AI Elements

A UI component library and custom registry built to build AI-native applications faster.

npx ai-elements
We built a full AI agent with 40+ tools, resumable streams, and multi-step reasoning on AI SDK. Every hard problem we'd solved with duct tape before, streaming, tool call repair, message management, tool based UI, they already had a clean API for. It feels like their team hit every wall we did, just before us.
Adir DuchanSenior AI Engineer

Build with our AiSdkAiSdk today

Get started with the AI SDK by using our cookbooks or templates.

Visit Documentation
npm i ai

Chatbot Starter Template

Learn how to build a full-featured AI chatbot with persistence, multi-modal chat, and more.

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Build a Slackbot Agent

Learn how to build a Slackbot that responds to direct messages and mentions in channels.

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Build a SQL Agent

Learn how to build an app that interacts with a PostgreSQL database using natural language.

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