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Mastra

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Mastra

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

mastra.ai
HQ: Remote
1-10
B2B

Company research

Public company, workplace, funding, and market signals

Updated Jul 29, 2026

Overview

Mastra is a San Francisco-based, remote-distributed open-source TypeScript framework and platform for building, observing, and deploying AI agents and apps. The core framework is Apache-2.0 open source, while the commercial platform adds observability, deployment, workspaces, and enterprise support.

Primary product

TypeScript AI framework and agent platform

Founded

2024

Headquarters

San Francisco, California, United States

Team size

40-50

Work style

Remote

Industry

Technology, Information and Internet

Sub-industry

AI agent frameworks / developer tools

Offices

San Francisco, California, United States

Business model

open-source
SaaS/platform subscription
usage-based metering
enterprise licensing
professional services/support

Funding

Stage

Series A

Total raised

$35M

Latest round

Series A · Apr 2026

Latest amount

$22M

Series A

Apr 2026 · Spark Capital

$22M

Seed

Oct 2025

$13M

People & investors

Leadership

Sam Bhagwat

Founder & CEO

Abhi Aiyer

Co-founder & Chief Technology Officer

Shane Thomas

Co-founder & Chief Product Officer

Joel Smith

Head of Platform

Aron Schuhmann

Head of Demand Generation

Joshua Schlisserman

Chief of Staff

Margarita Sandomirskaya

Talent & Operations Lead

Paul Scanlon

Technical Product Marketing Manager

Investors

Amjad Masad
Balaji Srinivasan
basecase capital
Broom Ventures
Conversion Venture Capital
Defy.vc
Founders Network
Founders You Should Know
Garuda Ventures
Gradient Ventures
Guillermo Rauch
Liquid 2 Ventures
Lombardstreet Ventures
Moonfire
Orange Collective
Palm Drive
Paul Graham
Pioneer Fund
Ride Home Fund
Ritual Capital
Runa Capital
Scale Asia
Script Capital
Spark Capital
SV Angel
Transpose Platform
Y Combinator

Work & culture

Open-source, fast-moving, high-agency, and remote-first/distributed. Public career copy emphasizes high-impact roles, Friday demo day, shipping quickly, community engagement, and generosity.

Work style

Remote

Compensation

No public salary bands were found. Public hiring copy emphasizes high-impact, remote, full-time roles and early-stage ownership rather than compensation details.

Product & market

Pricing

Free open-source core; paid platform with Starter ($0/month usage-based), Teams ($250/month), and Custom Enterprise, plus usage-based observability/CPU/data charges and enterprise support.

Differentiators

  • —TypeScript-first
  • —open-source Apache 2.0 core
  • —agents + workflows + memory + observability in one stack
  • —90+ model/provider routing
  • —human-in-the-loop and long-running agents
  • —MCP server support
  • —deploys inside React/Next.js/Node or as a standalone server
  • —managed workspaces and on-prem/cloud enterprise options

Technology

TypeScript
React
Next.js
Node.js
PostgreSQL
LibSQL
MongoDB
OpenAI
Anthropic
Google Gemini
xAI
MCP
Docker

Customers

Brex
Marsh
MongoDB
Satto
Sanity
Replit
SoftBank
WorkOS
Counsel Health
Factorial
Orange Collective
Index
Cedar
Kestral

Competitors

LangChain
LlamaIndex
CrewAI
AutoGen
LangGraph
deepset
Jina AI
Fetch.ai
Stability AI

Scale & contact

Estimated revenue

≈$3.5M ARR (estimated, 2025)

Estimated monthly visits

151.9K

Traffic estimate as of Jun 2026

legal@mastra.ai

Signals & risks

Other
Jun 2026

Material npm supply-chain compromise across the @mastra package scope; Mastra said it was resolved the same day, but it was a significant security incident for users of affected package versions.

Source

Latest news

Introducing Rubric Scorers for Mastra Agents

Mastra Blog · Jul 2026

Adds rubric-based LLM-judged scoring for agent outputs, with pass/fail criteria that can trigger retries.

Announcing Mastra Factory

Mastra Blog · Jul 2026

Launches a system for agents to take software from issue to production, integrated with GitHub, Linear, and Slack.

Announcing Trace Intelligence

Mastra Blog · Jul 2026

Introduces clustering and analysis of traces to surface goals, behaviors, sentiments, and outcomes across runs.

From package to postinstall payload: Inside the Mastra npm supply chain compromise by Sapphire Sleet

Microsoft Security Blog · Jun 2026

Microsoft detailed a large npm supply-chain compromise across the Mastra ecosystem and attributed it to Sapphire Sleet.

We raised a $22M Series A to help every developer build agents

Mastra Blog · Apr 2026

Announces a $22M Series A led by Spark Capital and the launch of the Mastra platform.

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