Gemini 4 Carbon
Google's most powerful AI model so far, built for cybersecurity work and long, complicated tasks. For now only security teams in a Google programme can use it; others get it later, with no date yet.
Key facts
- Released
- Oct 28, 2026
- What it does
- Text and chat: Writes, answers questions and holds a conversation.
Can I use it?
Not available to the public yet: only testers can use it so far. Cybersecurity defenders first; wider rollout later, no date yet. trckr updates this page when it opens up.
In an app
Not in any app yet.
For developers
No developer access yet.
Download
Not downloadable: it runs on the maker's own servers.
How it scores
From independent testers, never the lab's own claims.
- Chat answers, by people's votes#1 of 86
- Gemini 4 Carbon1,527
- 2Gemini 4 Argon1,522
- 3Muse Wonder1,512
- 4Claude Opus 5.51,506
- 5Claude Fable 51,504
Source: LMArena · LMArena text, adjusted for style
- Building apps, by people's votes#3 of 85
- Claude Opus 5.51,818
- 2Claude Sonnet 5.51,773
- 3Gemini 4 Carbon1,768
- 4GPT-6 Astra1,767
- 5Claude Fable 5.11,744
Source: LMArena · LMArena WebDev
Compare Gemini 4 Carbon with
It came out 28 days after Gemini 4 Argon, the lab's previous model.
The details
Google announced Gemini 4 Carbon on 28 October as its most powerful model so far, aimed at cybersecurity work and long, multi-step tasks. Access starts with cybersecurity defenders in Google's Fairwind Program; Google says developers, businesses and consumers will get it later but hasn't given a date. It also ranks near the top of LMArena's public Leaderboard: A ranking of models, either by test scores or by people voting for the better of two anonymous answers..
Model ID: The exact name developers type to use a model, like gpt-5-mini. New IDs often show up in a lab's systems before the official announcement, which is how trckr spots many releases early.
gemini-4-carbonGet alerts like this the moment they happen.
From Google and every other major lab.