kitio.aiAdded Oct 28, 2026
Mastra
Freemium · $250/moTypeScript framework for building AI agents and workflows
What is Mastra?
Mastra is an open-source TypeScript framework for building agents, workflows and RAG features in JavaScript apps. It is popular with web developers who want agent tooling that fits their existing stack.
Agents get tools, memory and model routing, while workflows define step graphs with branching, suspend and resume. A local playground shows traces and lets you test agents during development. Mastra apps deploy to common hosts like Vercel and Cloudflare, and Mastra Cloud offers managed hosting and observability.
Features
- Agents with tools and memory
- Workflow graphs
- RAG helpers
- Local dev playground
- Evals and tracing
Tags
Releases
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Mastra was added to the directory.
Organization
Mastra
🇺🇸 United States
Listed by kitio.ai · unverified owner
Pricing
- Pricing model
- Freemium
- Paid options from
- $250/mo
- Billing frequency
- Monthly
Mastra plans
Starter
Free
- 100K observability events
- 24 CPU hours
- 15-day data retention
- Unlimited users and projects
Teams
$250/mo
- 1M observability events
- 250 CPU hours
- 6-month data retention
- SSO and SOC 2 docs
Enterprise
Custom
- Custom limits and retention
- For teams at scale
Prices in USD, checked Oct 28, 2026. Plans change often, so confirm on the Mastra site.Official pricing
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Pros and cons
Pros
- Native TypeScript experience
- Good developer playground
- Deploys anywhere
Cons
- Not for no-code users
- Younger ecosystem than Python tools
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Q&A
What is Mastra?
Mastra is an open-source TypeScript framework for building agents, workflows and RAG features in JavaScript apps. It is popular with web developers who want agent tooling that fits their existing stack.
How much does Mastra cost?
Mastra is freemium, with paid plans from $250/mo.
Is there a free version of Mastra?
Yes. Mastra has a free plan, and paid plans add more usage and features.
What are the main features of Mastra?
Agents with tools and memory, Workflow graphs, RAG helpers, Local dev playground, Evals and tracing.
Who makes Mastra?
Mastra is made by Mastra.
What are the best alternatives to Mastra?
Popular alternatives include OpenAI Agents SDK, LangGraph, Microsoft Agent Framework.