Google opens Gemini 4 Carbon to developers and businesses

Google opened Gemini 4 Carbon to paying developers and enterprises on November 10, moving the model beyond its earlier limited rollout for cybersecurity defenders. During the introductory period, the public model costs $2 per million input tokens and $10 per million output tokens.

Google said all paying developers and enterprises can access Carbon through the Gemini API in Google AI Studio or through Gemini for business. Developers can also use it in Android Studio. Enterprises can access it through the API or model picker in Gemini for business, Google Antigravity and CodeMender.

Carbon is also rolling out to all Google AI Ultra subscribers through Google Antigravity, the Gemini app and AI Mode in Search. Carbon for cyber remains available to cybersecurity defenders through a separate application to Google’s Fairwind Program.

Google said the introductory API rates expire November 30. After that, the public-access model will cost $4 per million input tokens and $20 per million output tokens.

Google describes Carbon as its strongest model and says it ranks first on CursorBench 4.0, Perplexity WANDR and Zapier AutomationBench while costing less than half as much per task as the next-best external model. Those benchmark and cost comparisons are Google’s claims and have not been independently established across all three public tables.

Separately, Google is previewing a /swarm feature in Google Antigravity. The feature turns one prompt into a coordinated group of agents and lets users track the work assigned to each agent.