Guide Startups

Mastra

Winter 2025 · Active

The Javascript framework for building AI agents, from the Gatsby devs

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Founded: 2024

Team size: 8

Industries:

About

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.

Founders

  • Sam BhagwatFounder

    Founder/CEO of Mastra. Spent last ~8yrs as cofounder of Gatsby.js, an open-source React website framework, scaled to $5M ARR, sold to Netlify. Eng <20 at Zenefits (W13) and Plangrid (W12). Spent two years knocking doors. Stanford '11.

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  • Abhi AiyerFounder

    Founder/CTO of Mastra. Principal eng & lead of >100 person eng org at Netlify. Built Gatsby Cloud infra that ran 10s of thousands of build nodes, served billions of files, and 100s of TB of monthly bandwidth.

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  • Shane ThomasFounder

    Founder/CPO of Mastra. Prev: built Audiofeed (AI podcasting). Staff eng / head of product @ Gatsby. 15+ years in open source. State wrestling champion.

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