# Google Agent Development Kit (ADK)

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

## Facts

- **Pricing tier:** Free
- **Works on:** API, Self-hosted, CLI
- **Works in browser:** No

## Capabilities

- Open-source Python/Java framework from Google for building multi-agent systems
- Native integration with Vertex AI Agent Engine and Gemini models
- Model-agnostic — works with non-Google LLMs via LiteLLM

## FAQ

### What is Google Agent Development Kit (ADK)?

Google Agent Development Kit (ADK) is listed under Agent Frameworks (Developers), in the AI Agents & Automation category on Flocci AI Tools. Open-source Python/Java framework from Google for building multi-agent systems. It is free, with no paid plan attached, and it lives at adk.dev.

### Is Google Agent Development Kit (ADK) free?

Google Agent Development Kit (ADK) is listed as fully free — there is no paid tier attached to it in the catalog. That makes it one of the 396 entries on Flocci AI Tools with no upgrade path built in.

### Can I use Google Agent Development Kit (ADK) in a browser, or is there an app?

Google Agent Development Kit (ADK) needs to be installed or self-hosted — it doesn't run in a browser tab. It is available on an API, self-hosting and the command line.

### What can Google Agent Development Kit (ADK) do?

Google Agent Development Kit (ADK) does 3 things the catalog singles out: Open-source python/java framework from google for building multi-agent systems; native integration with vertex ai agent engine and gemini models; model-agnostic — works with non-google llms via litellm.

### What is the best free alternative to Google Agent Development Kit (ADK)?

Agno is the closest free alternative: it sits in the same Agent Frameworks (Developers) sub-category and is free. AWS Strands Agents, CAMEL and Claude Agent SDK also start free. The full list is on the alternatives page.

## Related

- [Google Agent Development Kit (ADK) alternatives](https://aitools.flocci.in/alternatives/google-agent-development-kit-adk)
- [Agent Frameworks (Developers)](https://aitools.flocci.in/category/ai-agents-automation/agent-frameworks-developers)
- [Best free AI agent frameworks for developers](https://aitools.flocci.in/best/best-agent-frameworks-developers)
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Source: Flocci AI Tools — https://aitools.flocci.in/tool/google-agent-development-kit-adk

Facts last verified: October 2026