Vercel AI SDK

Free tier

Platforms: mac, windows, linux | Last verified: 2026-04-03

Features
  • *Unified LLM API
  • *Streaming support
  • *React/Next.js hooks
  • *Tool calling
  • *Structured output
  • *Multi-provider support
  • *Edge runtime compatible
Pricing

Free: Fully open source, free to use

No paid plans listed.

Strengths
  • +Elegant streaming API for React/Next.js
  • +Supports all major LLM providers
  • +Type-safe with excellent TypeScript support
  • +Open source and free
Limitations
  • -Best suited for Next.js/Vercel ecosystem
  • -Less useful outside JavaScript/TypeScript
  • -Requires understanding of streaming patterns

Compare Vercel AI SDK with