Google on Nov. 10 made Gemini 4 Carbon available to developers, enterprises and consumers, the company said. It is rolling out to all Google AI Ultra subscribers in the Gemini app, AI Mode in Search and Google Antigravity, and is available via the API at the same introductory price as Gemini 4 Argon, $2 per million input tokens and $10 per million output tokens. Google said Argon remains the usual choice for most software engineering and knowledge work, while Carbon is built for harder tasks such as multi-step coding and open-ended scientific research. 9to5Google reported that the Gemini app has removed Gemini 3.1 Pro with the launch and that Antigravity is previewing a /swarm tool for teams of agents. Related: Gemini 4 Argon’s earlier release.