# Google Agent Development Kit (ADK) vs Mastra

Google Agent Development Kit (ADK) is free, with no paid plan attached. Mastra is free, with no paid plan attached.

| | Google Agent Development Kit (ADK) | Mastra |
|---|---|---|
| Pricing | Free | Free |
| Free to start | Yes | Yes |
| Category | AI Agents & Automation | AI Agents & Automation |
| Type | Agent Frameworks (Developers) | Agent Frameworks (Developers) |
| Best for | Open-source Python/Java framework from Google for building multi-agent systems | Open-source TypeScript framework (Apache 2.0) for agents, workflows and RAG |

## FAQ

### Google Agent Development Kit (ADK) vs Mastra: what is the difference?

Google Agent Development Kit (ADK) is free, with no paid plan attached and is listed for open-source Python/Java framework from Google for building multi-agent systems. 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).

### Is Google Agent Development Kit (ADK) or Mastra cheaper to start with?

Neither — Google Agent Development Kit (ADK) and Mastra are both free, so the choice comes down to capability rather than cost. Both entries list what they uniquely do above.

### Which should I choose, Google Agent Development Kit (ADK) or Mastra?

Choose Google Agent Development Kit (ADK) if you need open-source Python/Java framework from Google for building multi-agent systems; 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.

## Related

- [Google Agent Development Kit (ADK)](https://aitools.flocci.in/tool/google-agent-development-kit-adk)
- [Mastra](https://aitools.flocci.in/tool/mastra)
- [Google Agent Development Kit (ADK) alternatives](https://aitools.flocci.in/alternatives/google-agent-development-kit-adk)
- [Mastra alternatives](https://aitools.flocci.in/alternatives/mastra)
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Source: Flocci AI Tools — https://aitools.flocci.in/compare/google-agent-development-kit-adk-vs-mastra

Facts last verified: October 2026