Mastra
TypeScript framework for AI agents, workflows, memory and evals
What is Mastra?
Mastra is a TypeScript framework for building AI agents, workflows and AI-powered apps, with memory, tools and observability included. It suits JavaScript and TypeScript teams that want to stay in their own stack. The core is Apache-2.0 licensed, with some enterprise features under a separate license.
Pros
- Native TypeScript
- Workflows, memory and evals in one package
- Local dev playground
Cons
- Not for Python teams
- Younger ecosystem
- Enterprise features under a different license
Where Mastra ranks
Alternatives
Mastra alternatives
Claude Agent SDK
Anthropic's SDK for building agents on the same harness that powers Claude Code
CrewAI
Open-source Python framework for teams of role-based AI agents
LangGraph
Open-source framework for building stateful, controllable agents as graphs
OpenAI Agents SDK
OpenAI's lightweight open-source SDK for building agents with tools and handoffs
Pydantic AI
Type-safe Python agent framework from the team behind Pydantic
Google Agent Development Kit
Google's open-source toolkit for building and deploying multi-agent systems
Mastra FAQ
What is Mastra?
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Mastra is a TypeScript framework for building AI agents, workflows and AI-powered apps, with memory, tools and observability included. It suits JavaScript and TypeScript teams that want to stay in their own stack. The core is Apache-2.0 licensed, with some enterprise features under a separate license.
How much does Mastra cost?
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Mastra is open source. Core Apache-2.0; enterprise features source-available.
Is Mastra free?
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Yes. Mastra is open source and free to self-host; you pay only for the model API and hosting you use.
Is Mastra an autonomous AI agent?
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We rate Mastra as "Task agent": completes tasks you hand it, then reports back.
What are the best Mastra alternatives?
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Popular alternatives to Mastra are Claude Agent SDK, CrewAI, LangGraph, OpenAI Agents SDK, Pydantic AI.