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Mastra
AddedApr 22, 2026
UpdatedMay 30, 2026
Mastra

Mastra

Series A

Mastra is an open-source TypeScript framework for building production-grade AI agents and applications.

HQ
San Francisco, CA, US
Founded
2024
Accelerator
Y Combinator logoY CombinatorWinter 2025
Overview
Analysis
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Fundraising
Employees
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Website

Mastra is an open-source TypeScript framework for building production-grade AI agents and applications. It provides AI primitives such as agents, workflows, memory, retrieval-augmented generation, evals, observability tracing, and MCP servers, oriented to JavaScript and TypeScript developers working with modern web stacks.

The framework includes a local playground and SDK, plus optional components for monitoring, collaboration, and deployment such as Mastra Studio, Mastra Server, and a Gateway for unified model access. It is used to structure agentic application workflows, instrument behavior with tracing and evals, and support development-to-production operations for teams building AI features.

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Mastra - Quick Facts

Who are Mastra's competitors?

Companies similar to Mastra include LangChain, Klavis AI, Mistral AI and TraceRoot.AI.

When was Mastra founded?

Mastra was founded in 2024.

Where is Mastra's headquarters located?

Mastra's headquarters is located in San Francisco, CA, US.

When was Mastra's last funding round?

Mastra's most recent funding round was for $22M (USD) in April 2026.

How much has Mastra raised to-date?

As of Apr 9, 2026, Mastra has raised a total of $35M (USD).

How many employees does Mastra have?

Mastra has 35 employees as of May 13, 2026.

Mastra - Classification

Industry
  • AI/ML
Tags
  • Developer Tools
  • Open Source
  • Workflow Automation