Google launches Gemini 4 Hydrogen

Google has launched Gemini 4 Hydrogen, a new model it says is built for agentic work. Agentic work means tasks an AI carries out on its own, step by step.

Developers can use the model in the Gemini API. Google’s launch post lists the price at $1.50 per million input tokens. Google published the post on Thursday, November 12.

Google framed the release around speed of execution. Koray Kavukcuoglu, SVP of Google DeepMind and Chief AI Architect at Google, said: “Hydrogen is built for rapid execution across diverse agentic workflows.”

Hydrogen also arrives in Google’s Antigravity coding tool, together with a new Orchestrator. Antigravity’s blog describes the setup. A stronger Gemini model plans the work. The Orchestrator then hands the edits and tests to Hydrogen. Hydrogen makes the edits and runs the tests.

The Gemini API is the route for developers who want to call the model directly. Antigravity is the route for those who want the Orchestrator. Both posts are dated November 12.