Vercel AI SDK

Vercel AI SDK

The Vercel AI SDK is the TypeScript/JavaScript standard library for integrating LLMs into web applications and agents. It provides a unified API across 20+ model providers with first-class support for streaming React Server Components, structured output, tool use, and multi-step agentic loops.

Key Features

• Provider-agnostic — OpenAI, Anthropic, Google, Mistral, Groq, Ollama, and 15+ more via @ai-sdk/* packages
• generateText / streamText — core primitives for single-turn and streaming generation
• generateObject / streamObject — Zod-schema-typed structured outputs with streaming partial updates
• Tool use & agents — define tools with Zod schemas; maxSteps enables multi-step agentic loops
• React hooks — useChat, useCompletion, useObject for real-time streaming UI
• MCP client — built-in MCP client connects agents to any MCP server as tools

Quick Start

npm install ai @ai-sdk/openai zod

import { generateObject } from 'ai';
import { openai } from '@ai-sdk/openai';
import { z } from 'zod';

const { object } = await generateObject({
  model: openai('gpt-4o-mini'),
  schema: z.object({
    recipe: z.object({
      name: z.string(),
      ingredients: z.array(z.string()),
    }),
  }),
  prompt: 'Generate a simple pasta recipe.',
});
console.log(object.recipe);

Install via ai-supply

npx ai-supply add vercel-ai-sdk

Curated mirror of the open-source Vercel AI SDK project (Apache-2.0). Install upstream from the repository.