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Mastra

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Build AI-powered applications and agents with a modern TypeScript stack.

Developer ToolsAI AgentsWorkflow Automation
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Tracked since2026
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The Bottom Line

Entry price

Free plan available, paid tiers above

Biggest pro

Open-source AI framework

Biggest con

Requires developer knowledge

TL;DR - Mastra

  • Framework for building AI apps and agents with TypeScript.
  • Integrates with 40+ AI providers and supports autonomous agents and workflows.
  • Offers production essentials like observability and integrates with existing web frameworks.
Pricing: Free plan available
Best for: Growing teams

What is Mastra?

Editorial review
Mastra is a framework designed for developers to build AI-powered applications and agents using a modern TypeScript stack. Originating from the team behind Gatsby, it provides a comprehensive toolkit to go from initial prototypes to production-ready applications. Mastra integrates seamlessly with popular frontend and backend frameworks like React, Next.js, and Node.js, and can also be deployed as a standalone server. The framework offers key features such as model routing to connect with over 40 AI providers (e.g., OpenAI, Anthropic, Gemini), tools for building autonomous agents that can reason and use tools to solve tasks, and a graph-based workflow engine for orchestrating complex multi-step processes. It also supports human-in-the-loop interactions, context management for agents, and various integration options for existing applications or standalone endpoints. Mastra is ideal for developers looking to build, tune, and scale reliable AI products with built-in evaluation and observability tools.

Available on: Web

how we evaluateSourcemastra.ai ↗

Pros & Cons

Pros

  • Open-source AI framework
  • TypeScript-native design
  • Good for AI workflows
  • Active development

Cons

  • Requires developer knowledge
  • Documentation still evolving
  • Smaller community than alternatives

Preview

Key Features

AI application frameworkAgent buildingWorkflow orchestrationTool integrationTypeScript-firstOpen source

Pricing Plans

Pricing checked Aug 5, 2026

Open Source

Free

  • Full source code access
  • Other license
  • Community support
  • Self-hosted
Calculate your costView full pricing

Is Mastra worth the price?

95/100

Mastra's pricing is extremely generous, offering a full 'Open Source' tier completely free.

This makes it an excellent option for developers and small teams looking to build AI applications without upfront costs. It's best for individuals and organizations who prioritize self-hosting and community support.

Hidden Costs & Gotchas

Requires self-hosting infrastructure

No dedicated support included

Reliance on community for help

How Mastra Compares to Competitors

Compared to commercial AI development platforms like Google Cloud AI Platform or AWS SageMaker, Mastra's free 'Open Source' tier is significantly more accessible as it has no direct cost. While those platforms offer managed services and enterprise support, they come with usage-based or subscription fees that Mastra completely avoids for its core offering.

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Still deciding?

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

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Mastra FAQ

How does Mastra facilitate the development of AI-powered applications?

Mastra provides a comprehensive TypeScript-native framework for building AI applications and agents, offering features like model routing to over 40 AI providers and tools for creating autonomous agents. It supports integration with popular frontend and backend frameworks, allowing developers to go from prototype to production.

Which teams would benefit most from using Mastra?

Teams with strong developer knowledge that are looking to build, tune, and scale reliable AI products will find Mastra most beneficial. Its TypeScript-native design and focus on AI workflows make it suitable for developers aiming for production-ready AI applications.

How does Mastra compare to LangChain for building AI agents?

Mastra, like LangChain, is an open-source AI framework designed for building AI agents and workflows. However, Mastra distinguishes itself with a TypeScript-native design and originates from the team behind Gatsby, offering a comprehensive toolkit for production-ready applications.

What kind of AI providers can Mastra connect with?

Mastra features model routing capabilities that allow it to connect with over 40 AI providers, including well-known platforms like OpenAI, Anthropic, and Gemini. This enables developers to integrate various leading AI models into their applications.

What are the main trade-offs when choosing Mastra for AI development?

A primary trade-off when using Mastra is that it requires significant developer knowledge due to its framework nature. Additionally, its documentation is still evolving, and it currently has a smaller community compared to some alternative solutions.

Does Mastra include a free tier for developers?

Yes, Mastra is available on a free tier, allowing developers to get started with building AI-powered applications. Paid plans are offered for users who require more extensive usage and additional features.

How does Mastra manage complex, multi-step AI processes?

Mastra manages complex multi-step AI processes through its graph-based workflow engine, which is designed for orchestrating these operations. It also supports human-in-the-loop interactions and context management for agents, ensuring robust workflow execution.

Source: mastra.ai

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