mastra
Coding · Free · Building production AI agents in TypeScript
Mastra is an open-source TypeScript framework for building AI agents and applications. It bundles the primitives developers need in one place — agents with memory and tool-calling, deterministic workflows with branching and looping, RAG pipelines, model routing across providers, and built-in evals plus local dev tooling — so teams can prototype and ship production AI features without stitching together separate libraries.
mastra
Best for Building production AI agents in TypeScript
Pros
- ✓Unified TypeScript stack for agents, workflows, and RAG
- ✓Open source and self-hostable with no vendor lock-in
- ✓Model-agnostic via the Vercel AI SDK
- ✓Built-in evals and a local playground for fast iteration
Cons
- −Younger ecosystem than Python agent frameworks
- −Requires JavaScript/TypeScript proficiency
- −Rapidly evolving API may introduce breaking changes
Score weights applied to this tool
Our verdict on mastra
mastra is a solid, well-rounded option for building production ai agents in typescript. Its 8.3/10 score reflects dependable performance in the Coding category.
Frequently asked questions about mastra
What is mastra?
Mastra is an open-source TypeScript framework for building AI agents and applications. It bundles the primitives developers need in one place — agents with memory and tool-calling, deterministic workflows with branching and looping, RAG pipelines, model routing across providers, and built-in evals plus local dev tooling — so teams can prototype and ship production AI features without stitching together separate libraries.
What is mastra best for?
mastra is best for building production ai agents in typescript. It sits in the Coding category and is a free option.
How much does mastra cost?
mastra is listed as free. Check the official website for current, detailed pricing tiers.
What is mastra's score on AI Got Ranked?
mastra scored 8.3 out of 10 in 2026, based on six weighted metrics: usefulness, quality, ease of use, value, reliability, and popularity.
What are the pros of mastra?
Unified TypeScript stack for agents, workflows, and RAG. Open source and self-hostable with no vendor lock-in. Model-agnostic via the Vercel AI SDK. Built-in evals and a local playground for fast iteration.
What are the cons of mastra?
Younger ecosystem than Python agent frameworks. Requires JavaScript/TypeScript proficiency. Rapidly evolving API may introduce breaking changes.
Is mastra worth it?
mastra is a solid, well-rounded option for building production ai agents in typescript. Its 8.3/10 score reflects dependable performance in the Coding category.
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