# Mastra

**Source:** https://www.startuphub.ai/startups/mastra
**Profile type:** Startup

> An open-source TypeScript/JavaScript framework for building AI agents, from the creators of Gatsby.

## About

Mastra is an open-source framework designed for building AI agents using TypeScript and JavaScript. Developed by the team behind Gatsby, it provides a comprehensive suite of AI primitives, including workflows for complex operations, agents for autonomous decision-making, Retrieval Augmented Generation (RAG) for knowledge integration, and evaluation tools for quality assurance.

## Key facts

- **Slug:** mastra
- **Website:** https://mastra.ai
- **Location:** San Francisco, United States
- **Founded:** 2024-01-01
- **Employees:** 53
- **Operating status:** Active
- **Total funding:** $36M
- **Sectors / tags:** Agentic AI, AI Agents, Developer Tools, Open Source, Framework, TypeScript, JavaScript
- **Social:**
  - LinkedIn: https://www.linkedin.com/company/mastra-ai/
  - Twitter: https://x.com/calcsam
  - GitHub: https://github.com/mastra-ai/mastra

## Frequently asked

### What does Mastra do?

Mastra is an open-source framework designed for building AI agents using TypeScript and JavaScript. Developed by the team behind Gatsby, it provides a comprehensive suite of AI primitives, including workflows for complex operations, agents for autonomous decision-making, Retrieval Augmented Generation (RAG) for knowledge integration, and evaluation tools for quality assurance.

### What is Mastra's revenue?

StartupHub estimates Mastra's annual revenue at $8.3M (range $4.3M to $27.7M, 65% confidence), based on comparable companies in the sector.

### What is Mastra's valuation?

StartupHub estimates Mastra's effective valuation at $305.0M (range $89.2M to $431.2M, 55% confidence), based on comparable companies in the sector.

### How much funding has Mastra raised?

Mastra has raised a total of $36M in funding. The most recent round on record is Series A.

### Where is Mastra headquartered?

Mastra is headquartered in San Francisco, United States.

### When was Mastra founded?

Mastra was founded in 2024.

### What industry does Mastra operate in?

Mastra operates in Agentic AI, AI Agents, Developer Tools, Open Source, Framework, TypeScript.

### How many employees does Mastra have?

Mastra has approximately 53 people on record.

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