SaaS stacks
Mastra vs LangChain vs LlamaIndex: TypeScript AI Agents (2026)
Mastra, LangChain.js, and LlamaIndex.TS for building AI agents in TypeScript, 2026: stars, license, which is still maintained, and how to choose.
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Mastra, LangChain.js, and LlamaIndex.TS for building AI agents in TypeScript, 2026: stars, license, which is still maintained, and how to choose.
Mastra is the open-source TypeScript agent framework hitting 25.2k GitHub stars and v1.42.0 (June 12, 2026). We curated its starter into a gallery entry with three real deploy paths: clone the repo, one-click on Vercel, or ship as a deployable Next.js app via Totalum. Trade-offs in plain English, no hand-waving.