Both sit in the framework layer with similar commercial terms, so the practical split is language: LangGraph targets Python and Vercel AI SDK targets TypeScript.
Graph-shaped orchestration with checkpointing, interrupts and human-in-the-loop.
Streaming-first TypeScript SDK with a unified provider interface and UI hooks.
| LangGraph | Vercel AI SDK | |
|---|---|---|
| Licence | Open source | Open source |
| Pricing | open source | open source |
| Self-hostable | Yes | Yes |
| Languages | Python, TypeScript | TypeScript |
| Install | pip install langgraph | npm install ai |
| Keys required | None | None |
Both sit in the framework layer with similar commercial terms, so the practical split is language: LangGraph targets Python and Vercel AI SDK targets TypeScript. LangGraph: Graph-shaped orchestration with checkpointing, interrupts and human-in-the-loop. Vercel AI SDK: Streaming-first TypeScript SDK with a unified provider interface and UI hooks.
LangGraph can run on your own infrastructure. Vercel AI SDK can run on your own infrastructure.
LangGraph is open source (open source). Vercel AI SDK is open source (open source).
Every page here answers to Accept: text/markdown and returns the same content at roughly a tenth the tokens. No separate site, no toggle — same URL.
curl -s -H "Accept: text/markdown" https://newagent.build/compare/langgraph-vs-vercel-ai-sdk