Mastra
TypeScript framework for agents, workflows and RAG.
Mastra · open source · checked Oct 22, 2026
What it is
Mastra is a TypeScript AI framework for agents, workflows, memory and evals; open source core with enterprise features under a source-available license.
Use cases
- →Production TypeScript agents
- →Workflows with memory/evals
- →Teams on Node stacks
Pros
- +Batteries-included TS agent framework
- +Workflows + evals + memory
- +Used at large companies
Cons
- −Enterprise features license-gated
- −Younger ecosystem than LangChain
Where it ranks
- #3 Best Agent Frameworks & Automation Tools
Batteries-included TypeScript agents with workflows, memory and evals.
FAQ
How much does Mastra cost?
Free to start with no seats or usage tiers; enterprise features are source-available under the Mastra Enterprise License. (As checked on 2026-10-22; confirm on https://mastra.ai/.)
What is Mastra best for?
#3 in Best Agent Frameworks & Automation Tools: Production TypeScript agents.
What are the best alternatives to Mastra?
AI SDK (TypeScript toolkit for building AI apps and agents); LangChain / LangGraph + LangSmith (Agent frameworks plus LangSmith observability and deployment); CrewAI (Multi-agent framework and platform).
Is Mastra open source?
Yes, Mastra is open source (or has an open-source core).