LangGraph is free, with no paid plan attached. Mastra is free, with no paid plan attached. Both are listed under Agent Frameworks (Developers), so this is a like-for-like comparison. Neither is ranked above the other — Flocci carries no sponsored placement.
LangGraph is free, with no paid plan attached and is listed for build stateful, multi-agent apps as graphs. Mastra is free, with no paid plan attached and is listed for open-source TypeScript framework (Apache 2.0) for agents, workflows and RAG. Both sit in Agent Frameworks (Developers).
Neither — LangGraph and Mastra are both free, so the choice comes down to capability rather than cost. Both entries list what they uniquely do above.
Choose LangGraph if you need build stateful, multi-agent apps as graphs; choose Mastra if you need open-source TypeScript framework (Apache 2.0) for agents, workflows and RAG. Flocci AI Tools does not rank one above the other — it shows both feature sets side by side and lets the requirement decide.
| LangGraph | Mastra | |
|---|---|---|
| Pricing tier | Free | Free |
| Free to start | Yes | Yes |
| Category | AI Agents & Automation | AI Agents & Automation |
| Type | Agent Frameworks (Developers) | Agent Frameworks (Developers) |
| Listed capabilities |
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| Tags | framework, langchain, agents, orchestration, graph, open-source | typescript agent framework, mastra ai, open source agents, workflow engine, javascript agents, vercel ai sdk alternative |
| Website | langchain.com | mastra.ai |
| Full page | LangGraph details → | Mastra details → |
| Alternatives | LangGraph alternatives → | Mastra alternatives → |