Home
Loading

aVenture is in Alpha: During this preview period, you should expect the research data to be limited and may not yet meet our exacting standards. We've made the decision to provide early access to our data to showcase the product as we build, but you should not yet rely upon it alone for your investment decisions.

aVenture is in Alpha: During this preview period, you should expect the research data to be limited and may not yet meet our exacting standards. We've made the decision to provide early access to our data to showcase the product as we build, but you should not yet rely upon it alone for your investment decisions.

Get in touch

  • Contact

  • Request a demo

  • Request data updates

  • Add a company

Research

  • Companies

  • Investors

  • People

aVenture

  • Sitemap

  • Feature requests

Member

Backed by

© aVenture Investment Company, 2026. All rights reserved.

San Francisco, CA, USA

Privacy Policy

aVenture Investment Company ("aVenture") is an independent research platform providing detailed analysis and data on startups, venture capital investments, and key industry individuals. It is not a registered investment adviser, broker-dealer, or investment advisor and does not provide investment advice or recommendations. The data provided by aVenture does not constitute recommendations or advice, whether by methodology, analysis, AI-generated content, or a statement written by a staff member of aVenture.

aVenture is not affiliated with any of the people, companies, organizations, government agencies, regulatory bodies, or investment funds we provide coverage for on this site unless explicitly stated otherwise. Users assume full responsibility for decisions made based on information obtained from this platform. Links to external websites do not imply endorsement or affiliation with aVenture. Any links that provide the ability to invest in a primary or secondary transaction in a company are for convenience only and do not constitute solicitations or offers to buy or sell an investment. Investors should exercise heightened precaution and due diligence when investing in private companies, especially those not independently audited.

While we strive to provide valuable insights with objectivity and professional diligence, we cannot guarantee the accuracy of the information provided on our platform. Before making any investment decisions, you should verify the accuracy of all pertinent details for your decision. To the fullest extent permitted by law, aVenture shall not be liable for any direct, indirect, incidental, consequential, or financial damages arising from use of this site, whether by consumers of its contents directly or by persons or organizations covered by our research, even if we are advised of the possibility. Our best-efforts processes and correction request forms do not create a warranty or duty of care.

Profiles on this platform may include content generated in part by large language models (LLMs, artificial intelligence) that aggregate publicly available sources (e.g., SEC EDGAR, public filings, press releases). Source attribution is provided where known; always verify statements and claims here against original sources before relying on any data. Content on our site may contain inaccuracies, omissions, or what are commonly called 'hallucinations' if generated in part or in full by AI / LLMs. The risk can also exist even when content is written by a human, as internal and third-party sources may also have inaccuracies for the same or different reasons. While we randomly audit a proportion of content, this is not exhaustive.

We recommend that an independent auditor be hired to verify the accuracy of the information before relying on it for any sensitive decisions. By accessing this platform, you agree not to rely solely on any information generated by AI, aggregated, or sourced or written otherwise on this site, for investment, financial, or other decisions. aVenture assumes no responsibility for inaccuracies, omissions, or hallucinations. You must independently verify all data from primary sources. Use of this platform constitutes your waiver of claims for reliance-based damages, including negligent misrepresentation. To report an error, request a correction, or dispute information about a company or individual, contact us via our request data updates form.

Loading homepage
Loading
Home›Research›Companies

Companies

Loading
Home›
Research›
Companies›
Mastra›
Analysis
AddedApr 22, 2026
UpdatedMay 30, 2026
Mastra

Mastra

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
Loading
Overview
Analysis
Compare
Fundraising
Employees
News
Website

Contents

  1. 01Products & Services
  2. 02Market Outlook
  3. 03Competitive Strengths
  4. 04Competitive Risks
  5. 05Pricing Strategy
  1. 01Products & Services
  2. 02Market Outlook
  3. 03Competitive Strengths
  4. 04Competitive Risks
  5. 05Pricing Strategy

Product Overview

Mastra is an open-source TypeScript framework for building AI-powered applications and agents. It provides AI primitives including agents, graph-based workflows, retrieval-augmented generation, memory, evals, and observability. The framework supports 40+ LLM providers and integrates with React, Next.js, and Node.js. Core is Apache 2.0 licensed with enterprise features in separate directories.

The framework also includes Mastra Studio for observability, Mastra Server for deployment, and Mastra Memory Gateway for persistent conversational memory across any framework or language.

Market Outlook

The AI agent framework market has five major players: AutoGen (Microsoft), CrewAI, LangChain/LangGraph, LlamaIndex, and Mastra. Mastra is the TypeScript-native specialist. Mastra has reached 300K+ weekly npm downloads, 23.8K GitHub stars, and ~4,800 Discord members within 15 months.

Growth in 15 months exceeded Gatsby first five years. Teams at Brex, Sanity, Factorial, Indeed, Marsh McLennan, MongoDB, Workday, Salesforce, and Replit use Mastra.

Competitive Advantages

Mastra advantages include: (1) TypeScript-first from day one, not a Python port, (2) Built-in workflow engine with durable execution, suspend/resume, and branching, (3) OpenTelemetry observability without paid services, (4) SOTA Observational Memory scoring 94.9% on LongMemEval benchmark, (5) Team from Gatsby — proven OSS community builders who scaled to $5M ARR and were acquired by Netlify.

The team pioneered open-source framework strategy including early adoption of modern build tools, plugin ecosystems, and developer-friendly APIs.

Competitive Disadvantages

Mastra faces several competitive challenges. The ecosystem is smaller than LangChain.js with fewer third-party integrations. The framework is newer and lacks the long production history of Python-first alternatives. Converting open-source users to paid platform subscribers remains a key monetization challenge.

Additionally, edge runtime support is weaker than LangChain.js and Python interoperability is not a primary focus.

Pricing Strategy

Mastra operates an open-core model. Framework core is free under Apache 2.0. Platform products launched April 2026 with Starter free tier and $250 per team per month Teams tier. Enterprise tier includes lifecycle support, architecture review, on-premise deployment, and SLAs.

Memory Gateway has separate pricing based on memory tokens, retrieval storage, and stale thread retention. All tiers offer unlimited users and deployments.