Google DeepMind announces Gemini 4 Carbon as its next frontier model

Google DeepMind announced Gemini 4 Carbon on Oct. 28, calling it its “next frontier model.” DeepMind claimed it was “state-of-the-art across cybersecurity and long-horizon capabilities.”

Neowin reports that Carbon scored 59 on the Artificial Analysis Intelligence Index v5.0, compared with 58 for Claude Opus 5.5 and 57 for GPT-6 Astra. The article attributes the comparison to Google’s benchmarks.

Neowin also lists initial API prices of $2 per million input tokens and $10 per million output tokens, rising to $4 and $20, respectively, after a promotional period. It does not specify when that period ends.

Those prices did not mean developers and consumers could try Carbon immediately. Neowin said initial access was limited to a select group of cybersecurity defenders through Google’s Fairwind Program. The article did not give a date for wider availability.