Google makes Gemini 4 Carbon available to developers and in Antigravity

Google says developers can build with Gemini 4 Carbon starting November 10, two weeks after announcing the model for a subset of cyber defenders. Google calls it its strongest model, with frontier performance in cybersecurity and long-horizon work, built for sustained agentic workflows across software engineering, full-stack web development and scientific research.

Access (Google): the paid tier of the Gemini API in Google AI Studio and Android Studio. Google AI Ultra subscribers can use it in AI Studio and in Google Antigravity.

In Antigravity, Google says Carbon is rolling out today in the desktop app, CLI and IDE extensions for Google AI Ultra subscribers and in Gemini for business, and that it is working on expanding access to more paid users soon. Google describes it as built to explore thoroughly, reason deeply and run extended verification loops.