Mastra: Complete Guide 2026
Everything about Mastra - the TypeScript-first AI agent framework. Features, workflows, RAG, and comparison with LangChain.
Mastra
TypeScript-first framework for building AI agents with workflows, RAG, and integrations.
Quick Facts
| Attribute | Value |
|---|---|
| Pricing | Open Source |
| License | MIT |
| Best For | TypeScript/Node.js developers |
| Language | TypeScript |
| Key Feature | Type-safe workflows |
| Founded | 2024 |
What is Mastra?
Mastra is a TypeScript-native framework for building AI agents and applications. Unlike Python-first frameworks ported to TypeScript, Mastra was designed from the ground up for the Node.js ecosystem.
For TypeScript developers, Mastra offers better type safety, IDE integration, and developer experience than alternatives. Built-in workflows, RAG, and integrations make it production-ready.
Key Features
- TypeScript Native - Full type safety throughout
- Workflows - Define multi-step processes
- RAG - Built-in retrieval augmented generation
- Integrations - Pre-built connectors for common services
- Agents - Autonomous task execution
- Tools - Extend agents with custom tools
- Memory - Persistent conversation context
- Observability - Built-in tracing and debugging
Pricing
| Component | Cost |
|---|---|
| Mastra Framework | Free (MIT) |
| LLM APIs | Provider costs |
| Hosting | Your infrastructure |
Mastra is fully open-source. Pay only for LLM API usage.
Pros & Cons
Pros:
- Best TypeScript developer experience
- Full type safety and IntelliSense
- Modern, clean API design
- Built-in workflows and RAG
- Growing ecosystem
Cons:
- Smaller community than LangChain
- TypeScript only (no Python)
- Fewer integrations than mature frameworks
- Newer, less battle-tested
Alternatives
- LangChain (JS) - Larger community, more features
- Vercel AI SDK - Simpler, UI-focused
- OpenAI SDK - OpenAI-native
FAQ
Is Mastra better than LangChain for TypeScript? For pure TypeScript development, yes. Mastra has better type safety and DX. LangChain has more features and community content.
Can I use Mastra with any LLM? Yes, Mastra supports OpenAI, Anthropic, and other providers.
What about Python? Mastra is TypeScript only. For Python, use LangChain or CrewAI.
Is Mastra production-ready? Yes, though it’s newer than alternatives. Evaluate based on your specific needs.
Last verified: 2026-03-04