Is Mastra free to use?

Yes. The core framework is open source under the Apache 2.0 licence and free to self-host with no seat or usage limits. The hosted Mastra Platform also offers a free Starter tier that includes observability events, compute hours, and egress at no cost, with paid plans available for teams that need higher limits or enterprise features.

Which LLM providers does Mastra support?

Mastra's built-in model router connects to more than 90 providers—including OpenAI, Anthropic, Google Gemini, and many others—through a single, unified API. You can switch providers or models without rewriting agent logic.

What makes Mastra different from other agent frameworks?

Mastra is TypeScript-first and batteries-included: it ships a graph-based workflow engine, persistent agent memory, multi-provider model routing, and built-in observability (evals, traces, and A/B experiments) in one SDK. It integrates natively with the React and Node.js ecosystem and is backed by a hosted platform for production deployments.

Can I deploy Mastra agents to production without using the hosted platform?

Yes. The open-source core can be self-hosted as a standalone server or embedded within any Node.js application. The hosted Mastra Platform (Server product) is an optional convenience that adds managed REST API deployment, CI/CD integration, environment management, and team access controls.

Is there a learning curve for new users?

Developers familiar with TypeScript and modern Node.js patterns will find Mastra approachable—its workflow syntax mirrors promise chaining (.then(), .branch(), .parallel()), and Mastra Studio provides a visual UI for editing and testing agents without writing code. The quickstart guide gets a first agent running in minutes, though mastering advanced features like custom evals or memory configuration takes more time.

Reviewed · Updated 2026-06-21

Mastra

Open-source TypeScript framework for building production-ready AI agents and workflows with memory, observability, and 90+ LLM providers.

Reviewed by the Conversion Gems editorial team · 2026-06-21

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TypeScript and JavaScript developers building production AI agents, multi-step LLM workflows, or internal automation tools

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Mastra Enterprise for advanced features.

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LangChain.js for simpler AI workflows.

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