Gemini 4 Carbon is the new #1 on the Artificial Analysis Intelligence Index v5
Google's Gemini 4 Carbon tops the Artificial Analysis Intelligence Index v5 with a score of 59, leading 4 of 9 evaluations, and ranks second to Claude Opus 5.5 on the Coding Agent Index with 59 points. It scores 1609 Elo on AA-Briefcase (up 126 over Gemini 4 Argon) and 54 on AA-Omniscience v1.1, at $7.76 per Intelligence Index task on standard $4/$20 pricing. The model is being rolled out to selected users and is not yet publicly available, with a 50% launch discount and no confirmed end date.
Why it matters: The piece gives a detailed benchmark breakdown of an unreleased Google model, useful for tracking how Gemini's coding and agentic performance compares with Claude Opus 5.5 and GPT-6 Astra.