Google releases Gemini 4 Carbon with agent ‘swarm’ feature

Google is rolling out Gemini 4 Carbon to paying developers and enterprises via the Gemini API in Google AI Studio and Gemini for business, and to Google AI Ultra subscribers in the Gemini app, AI Mode in Search and Antigravity, after an earlier release to select cybersecurity defenders. Google says Carbon is built for tasks that test a model's limits, such as complex multi-step coding and open-ended scientific research, and is previewing a 'swarm' feature on Antigravity that turns a single prompt into a coordinated team of agents. It launches at an introductory $2 per million input tokens and $10 per million output tokens, with prices doubling at the end of November.