5 tools you can use instead of Mastra, ranked by live GitHub stars and npm downloads. LangChain, LlamaIndex and CrewAI are the most used. Stats updated 5 hours ago.
Mastra is a TypeScript framework for building AI-powered applications and agents, made by Mastra AI. The core is licensed under Apache 2.0, with enterprise features under a separate Mastra Enterprise License. It includes agents, graph-based workflows, memory and evaluations, and a managed platform starts free with a Teams plan at $250 a month.
It is a weaker choice for:
Most used first.
Open source framework for building applications with language models, paired with the LangSmith platform.
Open source data framework for connecting language models to your own data, plus a paid parsing platform.
MIT-licensed Python framework for multi-agent workflows, with a paid platform for deployment.
Low-level orchestration framework from LangChain for long-running, stateful agents.
Free open source TypeScript toolkit from Vercel for building AI apps and agents across many model providers.
| Tool | Pricing | Free plan | Paid from | Open source | GitHub stars |
|---|---|---|---|---|---|
| Mastra | Open source | The self-hosted framework is free. The managed Starter plan is $0 a month with 100K events and 24 CPU hours included. | $250 a month for Teams | Yes, Apache-2.0 (core), Mastra Enterprise License (ee directories) | None |
| LangChain | Freemium | Yes: the LangChain framework is free and open source; LangSmith has a free Developer tier with up to 5,000 base traces a month | $39 a seat a month for LangSmith Plus, plus usage-based compute and storage | Yes, MIT | 148k |
| LlamaIndex | Freemium | Yes: the LlamaIndex framework is free and open source; LlamaParse has a free tier with 10,000 credits | $50 a month for the LlamaParse Starter plan | Yes, MIT | 52.4k |
| CrewAI | Open source | The framework is free and open source. The hosted Basic plan is $0 a month with 50 executions a month. | Enterprise: custom quote | Yes, MIT | None |
| LangGraph | Open source | The framework is free and open source. LangSmith has a Developer plan at $0 per seat a month, with up to 5k base traces a month. | $39 per seat a month for LangSmith Plus | Yes, MIT | None |
| Vercel AI SDK | Open source | The library is free and open source. You pay the model providers you call. | Not listed | Yes, Apache-2.0 | None |
Pricing facts come from each tool's official pricing page, with the checked date on the tool's own page.
By GitHub stars, LangChain is the most used alternative to Mastra listed on ScratchDB, with 148k stars.
LangChain, LlamaIndex, CrewAI, LangGraph and Vercel AI SDK are open source.
LangChain and LlamaIndex have a free plan. The table on this page shows what each one includes.
