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Vercel AI SDK

Verified Sep 2026

The AI Toolkit for TypeScript

A free, open-source TypeScript library for building AI-powered apps and agents. Unified API for text generation, structured objects, tool calls, and UI streaming across React, Next.js, Vue, and Svelte.

Who it's for

TypeScript developers who want a unified toolkit to stream LLM responses and build generative UIs.

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Vercel AI SDK features