Gemini 4 Carbon is out: what changed, what it costs, and how it compares to Claude
Google made Gemini 4 Carbon, its strongest model, available to paying developers and Google AI Ultra subscribers on November 10, 2026. It costs $2 / $10 per million tokens until November 30, leads Google's own table on long context and security, and sits fourth on the Artificial Analysis index behind Claude Fable 5.2. Here is what that means for what you build.