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-googledeepmind-gemini-4-carbon/ # Google DeepMind: Gemini 4 Carbon is our next frontier model Google DeepMind (@GoogleDeepMind), X, 2026-10-28. Source: https://x.com/GoogleDeepMind/status/2115489356437651654 ## Why it matters Lab's official announcement (~274K views); its reply says Carbon works 'for days' on tasks and that cyber-defender feedback will shape guardrails before wider access. ## Summary DeepMind calls Carbon state of the art in cybersecurity and long-horizon capabilities; the follow-up says it 'can work through complex tasks for days without getting stuck or taking shortcuts' and that feedback from initial cyber defenders 'will help us iterate on guardrails before we expand access soon'. ## Archived text > Gemini 4 Carbon is our next frontier model. > > It’s state-of-the-art across cybersecurity and long-horizon capabilities. Archived 2026-10-28 via fxtwitter (unofficial). Counts: 285,192 views, 5,409 likes, 519 reposts, 316 replies (at fetch time) Media: https://pbs.twimg.com/media/HVu5JfhXkAAHYVr.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/)