ChatGPT Agent vs Google Agent Development Kit (ADK)
A side-by-side comparison of capabilities, autonomy, integrations, and pricing to help you choose.
Short answer: choose ChatGPT Agent if you want openai's agentic mode in chatgpt that browses, runs code, and acts (Supervised agent, subscription); choose Google Agent Development Kit (ADK) if you want open-source framework for building and orchestrating multi-agent systems (Supervised agent, free).
| ChatGPT Agent | Google Agent Development Kit (ADK) | |
|---|---|---|
| What it is | OpenAI's agentic mode in ChatGPT that browses, runs code, and acts | Open-source framework for building and orchestrating multi-agent systems |
| Type | product-with-agents | framework |
| Autonomy | Supervised agent | Supervised agent |
| Pricing | subscription · Included in ChatGPT Plus/Pro/Team/Enterprise plans | free · Free (open source; pay model + cloud usage) |
| Best for | consumers, smb, enterprise | developers, enterprise |
| Deployment | saas | self-hosted, api |
| Modalities | text, browser, code | text, code, api |
| Models | gpt, proprietary | gemini, model-agnostic |
| Protocols | function-calling, rest-api | a2a, mcp, function-calling, rest-api |
| Integrations | Gmail, GitHub, ChatGPT connectors | Vertex AI, Cloud Run, Gemini, LiteLLM, MCP servers |
| Capabilities | 4 documented | 3 documented |
ChatGPT Agent
- +Unifies browsing (Operator) and analysis (Deep Research) into one agent
- +Acts on a virtual computer: browses, runs code, and builds deliverables
- +Available across ChatGPT paid plans with no separate product to adopt
- -Agentic browsing can be slow and error-prone on complex sites and login/CAPTCHA flows
- -Requires user oversight; not a hands-off autonomous worker
Google Agent Development Kit (ADK)
- +Backed by Google with first-class deployment to Vertex AI and Cloud Run
- +Built around the open A2A protocol for cross-framework agent interoperability
- +Model-agnostic via LiteLLM despite Gemini-first defaults
- -A framework, not a product: you build, host, and secure agents yourself
- -Strongest when paired with Google Cloud, which can imply lock-in
Which should you choose?
ChatGPT Agent is openai's agentic mode in chatgpt that browses, runs code, and acts, best for consumers, smb, enterprise. Google Agent Development Kit (ADK) is open-source framework for building and orchestrating multi-agent systems, best for developers, enterprise. The right choice depends on the autonomy level you want, your existing integrations, and your budget, all compared above.