Mastra vs Vercel AI SDK vs LangGraph.js for TypeScript Agents

We ran the same TypeScript agent job in Mastra, the Vercel AI SDK, and LangGraph.js and compared runaway loop limits, memory, human approval across restarts, install size, and pricing.

We ran the same TypeScript agent job in Mastra, the Vercel AI SDK, and LangGraph.js and compared runaway loop limits, memory, human approval across restarts, install size, and pricing.

We built the same tool-calling agent in 10 TypeScript AI agent frameworks and compared install size, bundle size, cold start, memory, prompt overhead, and npm adoption to find the best fit for each Node.js team.