mastra
From the team behind Gatsby, Mastra is a framework for building AI-powered applications and agents with a modern TypeScript stack.
TL;DR · 30-second scan
mastra (TypeScript) — From the team behind Gatsby, Mastra is a framework for building AI-powered applications and agents with a modern TypeScript stack.
You're building AI products in TypeScript/Node and want a complete framework (agents + workflows + evals).
AI & ML
JavaScript-native AI agent framework. Workflows, agents, memory, RAG, evals — all in TypeScript. Created by the team behind Gatsby. Fastest-growing JS AI framework in 2026. The right pick if you want LangChain-style power but in TS rather than Python.
You're building AI products in TypeScript/Node and want a complete framework (agents + workflows + evals).
You're Python-first — LangChain has a deeper Python ecosystem.
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