Vercel AI SDK

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Category:AI Agent Development Frameworks

Overview

Free open-source TypeScript SDK for building LLM-powered apps and agents across frameworks with unified API.

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Vercel AI SDK is a free, open-source TypeScript library from the creators of Next.js, designed to help developers build AI-powered applications and agents. It offers a unified provider API—OpenAI, Anthropic, Claude, Google Gemini, etc.—structured output (via Zod), streaming responses, chat UI integrations, tool calling, agentic loops, and full TypeScript type safety across React, Svelte, Vue, Angular, or Node apps. With over 2 million weekly downloads, it simplifies LLM integration and enables rapid development of robust AI workflows.

Autonomy level

Reasoning: Vercel AI SDK is a development toolkit rather than an autonomous agent. It provides developers with tools and functions like useChat, useCompletion, generateText, streamText, generateObject, and streamObject to build AI applications, but it does not operate independently or make autonomous decisions. It requires human developers to implement and co...

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Some of the use cases of Vercel AI SDK:

Switching between different LLM providers using a unified TypeScript API.
Streaming text and structured JSON generation with Zod validation.
Incorporating tool calling and agentic decision loops into workflows.
Building chat UIs with full type safety across front‑end frameworks.
Rapid prototyping and production-grade AI features using streaming and typings.

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Pricing model:

free

Code access:

open-source

Popularity level: 82%