Agent Development Kit
Google’s open-source framework for multi-agent systems.
Code-first toolkit for building, evaluating and deploying agents, optimized for Gemini and Vertex AI but model-agnostic.
- Vendor
- Category
- Agent frameworks
- Pricing
- Open source
- Open source
- Yes
- License
- Apache 2.0
- Platforms
- Python, Java, TypeScript
- Launched
- 2025
- Website
- google.github.io/adk-docs
Features
- Multi-agent hierarchies
- Built-in evaluation
- A2A protocol
Best for
- Agents
Works with
- Gemini 3.8 Flash — Google. Google’s most intelligent Flash model — fully multimodal, fast and affordable.
More agent frameworks
- Model Context Protocol — Anthropic (open standard). The open standard for connecting AI to tools and data.
- LangGraph — LangChain. Stateful, controllable agent orchestration.
- Claude Agent SDK — Anthropic. The agent harness behind Claude Code, as a library.
- OpenAI Agents SDK — OpenAI. Lightweight multi-agent workflows with handoffs.
- CrewAI — CrewAI. Role-based multi-agent crews.
- Pydantic AI — Pydantic. Type-safe agent framework for Python.
- Microsoft Agent Framework — Microsoft. Successor to AutoGen and Semantic Kernel.
- Mastra — Mastra. The TypeScript agent framework.