Gemini 4 Carbon is live for Google AI Ultra subscribers in the US and supported countries — effective November 10, 2026. It costs $100 a month in the US. No Indian pricing is announced yet. The model is now accessible in the Gemini app and Google Search’s AI Mode for paying users aged 18 and up, with daily usage limits applying.
It is not available on lower-tier plans, and Google has given no timeline for broader access. Carbon joins Gemini 4 Argon but is built for heavier reasoning: it explores problems more deeply, rechecks its own work, and targets complex tasks like cross-app debugging or multi-step automation. Google says it topped CursorBench 4.0 for coding and Zapier’s AutomationBench.
Developers can call it via the paid Gemini API in Google AI Studio and Android Studio. Businesses get it through Gemini for Business. Until November 30, input tokens cost $2 per million and output tokens $10 per million, same as Argon’s intro rates. Both rates double on December 1.




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