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Mastra in brief
The reference agentic framework for TypeScript developers, still young but very promising.
- PriceFree (open source)
- CategoryAgents IA
- RecommendedYes
The Essentials
- Open source TypeScript AI agent framework, built for Next.js and modern web apps
- Free, source code open on GitHub
- Workflows, tools, memory and RAG integrations included
- Requires TypeScript, not a no-code tool
What is Mastra?
Mastra is a TypeScript framework for building AI agents and LLM applications. It provides a clear abstraction for defining agents with tools, graph-oriented workflows, persistent memory and RAG (retrieval-augmented generation). The project directly targets JavaScript/TypeScript developers who want to integrate agentic capabilities into their apps without switching languages.
Strengths
Native TypeScript
No Python bridge, no translation layer. Mastra is fully TypeScript with strong typing included. Next.js developers are immediately in their ecosystem.
Intuitive graph workflows
Like LangGraph but in TypeScript, Mastra lets you define workflows with branches, loops and persistent state. The API is more concise than LangGraph.
Integrations included
Connectors for vector databases (Pinecone, pgvector), LLMs (OpenAI, Anthropic, Mistral), external tools. The library grows quickly.
Limits
Less mature ecosystem than LangChain
Mastra is a recent project. Community, documentation and examples are still less rich than LangChain or CrewAI.
Python is absent
If your team is primarily Python, Mastra isn't the right choice. LangGraph or CrewAI are more suitable.
Pricing
Fully free open source framework. Costs are LLM tokens consumed by the models used.
Alternatives
Mastra = TypeScript AI agents. Alternative LangGraph (langchain.com) = primarily Python, more mature. Alternative CrewAI (crewai.com) = Python, more accessible for beginners.
Verdict
Mastra is the logical choice for TypeScript teams wanting to integrate agentic capabilities into their apps without leaving their ecosystem. The project is progressing rapidly. For Python, LangGraph or CrewAI remain more mature.
FAQ
Does Mastra work with Next.js?
Yes, it's one of its primary targets. Integration into a Next.js app is documented and straightforward.
Mastra or LangGraph?
If your team is TypeScript, Mastra. If Python, LangGraph. Both share the same stateful workflow philosophy.
Is there Mastra cloud hosting?
No official Mastra cloud platform as of 2026. The framework deploys in your own infrastructure.
Is the documentation complete?
Decent but still evolving. The GitHub repository and examples compensate for gaps.
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Screenshots Mastra
6
Mastra : 0/10.
The reference agentic framework for TypeScript developers, still young but very promising..
Test Mastra yourself
A free trial is available. Plan thirty minutes to form your own opinion.
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Mastra
Free (open source)