Gemini 4 Carbon
Google · 2026-10-28
Gemini 4 Carbon is Google's frontier reasoning model announced October 28, 2026, positioned above Gemini 4 Argon for cybersecurity defense and long-horizon agentic coding. Its initial rollout is limited to a subset of cyber defenders and then trusted partners through the Fairwind Program, ahead of developer, business and consumer availability; Google states an introductory price of $2 per million input and $10 per million output tokens, the same as Argon. Google's evaluation runs it through the Gemini API at the highest thinking setting; a public API identifier, context window, knowledge cutoff and the set of supported thinking levels have not been published.