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    3. Mastra

    Mastra

    Mastra is an all-in-one TypeScript framework for building AI-powered applications and agents, helping JavaScript and TypeScript developers build production-ready AI agents without needing to learn entirely new paradigms.

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    At a Glance

    2Tools Listed
    4Products
    99Tool Views
    17Capabilities
    Discussions
    San Francisco, CAHeadquarters
    2024Est.
    20Employees
    $13MRaised
    Focus Areas
    LLM Evaluations
    Agent Frameworks
    LLM Orchestration
    AI Coding Assistants
    Connect
    Latest News
    Announcing Mastra 1.0!Jan 20, 2026
    How Sanity Built a Content Agent That Actually Understands Your CMSJan 16, 2026
    Markets
    • JavaScript and TypeScript developers
    • AI application developers
    • Enterprise companies
    • Startups and YC companies
    • +6 more

    AI Tools by Mastra

    (2)
    View Mastra Code
    Mastra Code tool icon

    Mastra Code

    Terminal AI Coding Agent

    AI Coding Asst.CLI AssistantsAgent Frameworks
    View Mastra
    Mastra tool icon

    Mastra

    TypeScript AI Agent Framework

    Agent FrameworksLLM EvaluationsLLM Orchestration

    Discussions

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    Latest News

    01/20/2026

    Announcing Mastra 1.0!

    mastra.ai
    01/16/2026

    How Sanity Built a Content Agent That Actually Understands Your CMS

    mastra.ai
    01/14/2026

    Composite Storage: Optimize for Performance, Scale and Cost with MastraStorage

    mastra.ai
    12/18/2025

    Counsel Health Is Multiplying the World's Clinical Capacity with Mastra

    mastra.ai

    Products & Services

    4
    Mastra Framework
    October 2024

    Open-source TypeScript framework for building AI agents and workflows, featuring agent and workflow primitives, tool calling, memory, evals, tracing, and a playground experience. Licensed under Apache 2.0.

    Mastra Platform
    2025

    Managed hosting platform with observability, studio, and deployment capabilities. Includes structured logs, AI-aware tracing, interactive UI for collaboration, GitHub-based automatic deployments, and REST endpoints. Free to start, with pricing launching Q1 2026.

    Principles of Building AI Agents (Book)
    March 2025

    Educational book on AI agent development, distributed to 70,000+ physical copies and 100,000+ digital copies

    Patterns for Building AI Agents (Book)
    November 12, 2025

    Second book on AI agent development patterns and best practices

    Market Position

    Mastra positions itself as the leading TypeScript-native AI agent framework, differentiating from Python-based alternatives like LangChain, CrewAI, and AutoGen. Built by the creators of Gatsby, it emphasizes production-readiness, developer experience, and integration with the modern JavaScript ecosystem. Mastra is the third-fastest-growing JavaScript framework in NPM history, with 190,000+ weekly downloads. It focuses on providing a complete toolkit from prototyping to production with built-in observability, evals, and managed hosting.

    Leadership

    Founders

    SB

    Sam Bhagwat

    CEO, Co-founder of Gatsby (2018-2023), Principal Engineer at Netlify (2023), Software Engineer at PlanGrid, Zenefits, Boingo Wireless, CFO at Blueseed, Author of 'Principles of Building AI Agents' and 'Patterns for Building AI Agents'

    AA

    Abhi Aiyer

    CTO, Principal Software Engineer at Netlify (2023-2024), Principal Software Engineer/Tech Lead at Gatsby (2018-2023), Principal Software Engineer at Cornerstone OnDemand and Workpop, CEO of Platform First LLC

    ST

    Shane Thomas

    CPO, Engineering Manager and Staff Software Engineer at Gatsby, previously worked at Netlify and CodeKarate

    Executive Team

    SB

    Sam Bhagwat

    CEO

    Co-founder of Gatsby, Principal Engineer at Netlify, Author

    AA

    Abhi Aiyer

    CTO

    Principal Software Engineer at Netlify and Gatsby

    Founding Story

    The founders (Sam Bhagwat, Abhi Aiyer, and Shane Thomas) spent a decade building Gatsby, the popular open-source React framework. In October 2024, while attempting to build sales agents, they became frustrated by the lack of good TypeScript-native tooling for AI agent development. They originally set out to build an AI-powered CRM but quickly pivoted to building better developer tooling when they realized the existing frameworks didn't meet their needs. This led them to create Mastra, applying their decade of experience in open-source JavaScript framework development to the emerging AI agent ecosystem.

    Business Model

    Revenue Model

    Open-source framework with freemium managed platform. Revenue from API usage, managed hosting platform subscriptions (launching Q1 2026), and custom enterprise support/deployment services.

    Pricing Tiers

    Mastra Framework
    Free

    Open source under Apache 2.0 license. TypeScript framework for agentic development, agent tools, MCP, memory, workflows, orchestration, RAG, evals, vector stores, and datasets.

    Mastra Platform
    Free to start

    Observability (structured logs, AI-aware tracing, eval results dashboards), Studio (interactive UI, agent testing, visual workflow configuration), Deployment (GitHub-based deployments, REST endpoints, instant rollbacks, autoscaling). Pricing launches Q1 2026.

    Custom Support and Deployment
    Contact sales

    Agent lifecycle support (planning, prototyping, workshops), shared Slack support, architecture design meetings, service SLAs, on-prem or private cloud platform deployments, SSO, and RBAC.

    Private, no IPO plans announced

    Target Markets

    Industries & Segments
    • JavaScript and TypeScript developers
    • AI application developers
    • Enterprise companies
    • Startups and YC companies
    • Healthcare organizations
    • E-commerce platforms
    Use Cases
    • Conversational agents for customer support and onboarding
    • Domain-specific copilots (coding, legal, finance, research)
    • Multi-step workflow automations
    • Decision-support tools for data analysis
    • Support automation
    • CAD diagram generation
    Notable Customers
    • SoftBank
    • Adobe
    • PayPal
    • Replit

    Quick Facts

    Headquarters
    San Francisco, CA
    Founded
    2024
    Employees
    20
    Total Funding
    $13 million
    Investors
    Paul Graham (YC), Y Combinator
    Office Locations
    San Francisco
    Global distributed team

    Funding History

    Seed$13 million
    March 2025
    Y Combinator
    Gradient Ventures
    Paul Graham
    basecase capital

    History & Milestones

    January 20, 2026

    Released Mastra 1.0

    January 2025

    Joined Y Combinator Winter 2025 batch

    Mid-February 2025

    Project went viral on Hacker News and GitHub, growing from 1,500 to 7,500 GitHub stars in one week

    March 2025

    Raised $13 million seed round from 120+ investors

    March 2025

    Published 'Principles of Building AI Agents' book (70,000+ physical copies, 100,000+ digital copies distributed)

    Key Capabilities

    17
    Autonomous agents with tool usage and reasoning
    Graph-based workflow engine with branching and parallel execution
    Model routing for 40+ LLM providers (OpenAI, Anthropic, Gemini, etc.)
    Memory management (message history, RAG, working/semantic memory)
    Human-in-the-loop capabilities with state storage
    Context management and retrieval from APIs, databases, and files

    Integrations & Partnerships

    Platform Integrations

    • Vercel AI SDK v5 and v6
    • React
    • Next.js
    • Node.js
    • Express
    • Hono
    • CopilotKit
    • 40+ LLM providers (OpenAI, Anthropic, Gemini, etc.)

    Key Partnerships

    Vercel (AI SDK integration)
    Y Combinator
    Fireworks AI

    Connect

    Website
    mastra.ai/
    GitHub
    mastra-ai
    X / Twitter
    mastra_ai

    AI Topics

    5

    Mastra focuses on these topics:

    LLM Evaluations(1)
    Agent Frameworks(2)
    LLM Orchestration(1)
    AI Coding Assistants(1)
    Command Line Assistants(1)
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