Google makes Gemini 4 Carbon available to paying developers
Gemini 4 Carbon, released two weeks ago to a group of cyber defenders, is now on the Gemini API at $2 per million input tokens and $10 per million output tokens, and in a preview multi-agent mode in Antigravity.
Source published · In the Daily Brief of 11 November 2026
Filed under Large language models, AI industry
Google said Carbon is built for long, multi-step work and spends more tokens than Gemini 4 Argon on exploration and verification. It is priced at Argon’s introductory rate and is rolling out to AI Ultra subscribers in the Gemini app and in AI Mode in Search.
A new /swarm feature in Google Antigravity turns one prompt into a team of agents, with Carbon assigned to design, coordination and auditing and lighter models doing parallel work. Google said Carbon ranked first on CursorBench 4.0, Perplexity’s WANDR and Zapier’s AutomationBench, and first of 23 model configurations on Balyasny Asset Management’s financial intelligence benchmark.