TL;DR: Mastra is a Y Combinator Winter 2025 startup The Javascript framework for building AI agents, from the Gatsby devs, currently active with a team of 30.
The Javascript framework for building AI agents, from the Gatsby devs
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Mastra is the easiest way to build a production AI application, built by the team that brought you Gatsby. We provide a complete set of AI primitives: workflows for complex operations, agents for autonomous decisions, RAG for knowledge integration, and evals for quality & accuracy. Mastra is open-source, modular, and built in Typescript for product developers. You can deploy Mastra on any cloud, and it gives you a straightforward syntax to solve the hardest problems building with AI: human-in-the-loop workflows, agent memory and tool selection, and output quality.
Built by LemStudio
Yes. Mastra was funded by Y Combinator in the Winter 2025 batch. The Javascript framework for building AI agents, from the Gatsby devs
Mastra is the easiest way to build a production AI application, built by the team that brought you Gatsby. We provide a complete set of AI primitives: workflows for complex operations, agents for autonomous decisions, RAG for knowledge integration, and evals for quality & accuracy. Mastra is open-source, modular, and…
Mastra was part of Y Combinator's Winter 2025 batch.
Mastra has a team of 30 people according to Y Combinator's directory.
Mastra is currently listed as Active with a team of 30 in Y Combinator's directory.
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