As of: 2026-10-30 13:42 CET. Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/ Canonical page: https://postcutoff.com/p/2026-10-28-officiallogank-gemini-4-carbon/ # Logan Kilpatrick: Introducing Gemini 4 Carbon, a big jump over Argon (benchmark table) Logan Kilpatrick (@OfficialLoganK), X, 2026-10-28. Importance: major (4 of 5). Source: https://x.com/OfficialLoganK/status/2115489284404940898 ## Why it matters Gemini API lead's launch post (~389K views) carrying Google's full benchmark table against Argon, GPT-6 Astra, Opus 5.5 and Fable 5.1. ## Summary Kilpatrick says Carbon is 'a big jump over Argon', SOTA on cyber and long-horizon tasks, #1 on Artificial Analysis V5, better at coding usability and 'more aligned'. The attached image is Google's 17-row benchmark table (reproduced in the gemini-4-carbon model file). ## Archived text > Introducing Gemini 4 Carbon, it's a big jump over Argon which we released just 2 weeks ago. > > Gemini 4 Carbon is SOTA on cyber, long horizon tasks, ranks #1 on Artificial Analysis V5, significantly improves on usability in domains like coding, and is more aligned. Archived 2026-10-28 via fxtwitter (unofficial). Counts: 406,648 views, 9,044 likes, 707 reposts, 777 replies (at fetch time) Media: https://pbs.twimg.com/media/HVu4Jx_bQAA3BbT.jpg?name=orig ## Cited in - 2026-10-28: [Google announces Gemini 4 Carbon, #1 on the Artificial Analysis Intelligence Index v5 (59), two weeks after Argon; first only for Fairwind cyber defenders](https://postcutoff.com/e/2026-10-28-gemini-4-carbon/)