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Gemini 4 Carbon

Google's strongest Gemini model so far, announced in late October 2026 and released first to cybersecurity defenders.

Gemini 4 Carbon is the top model in Google’s Gemini 4 family, sitting above Gemini 4 Argon. Google highlights its strength at finding and fixing security holes and at long-running tasks, which is why it goes to a small group of defenders first.

Think of it as the flagship that is being introduced carefully: the same skills that help defenders could help attackers, so access widens in steps. Most of the performance numbers so far are Google’s own, so independent tests matter.