Google on Oct 28 announced Gemini 4 Carbon, which it calls "our strongest model with state-of-the-art cybersecurity and long horizon capabilities." It comes two weeks after Gemini 4 Argon.
Carbon isn't broadly available yet. Google said it will make Carbon available to "a subset of cyber defenders" starting this week, then add trusted partners gradually through its Fairwind Program. Developers, businesses and consumers get it after that. Google gave no date for wider release. The company also said it is taking part in "the U.S. government's voluntary process for pre-release model testing."
Benchmarks (Google's own figures unless noted)
- Artificial Analysis Intelligence Index v5.0: Google says Carbon ranks #1 with a score of 59. Artificial Analysis's own Intelligence Index page also lists Gemini 4 Carbon (High) first, with a score of 59, as of Oct 29.
- SEC-bench Pro (finding vulnerabilities): Google says Carbon scored 88.2%.
- ExploitGym (exploitation): Google says Carbon scored 54.8%.
- Collinear's CWE-bench (patching): Google says Carbon scored 71.0%.
- WebDev Arena: Google says Carbon ranks #4, at 1768 Elo.
Google says it ran the external benchmarks "without guardrails." Apart from the Artificial Analysis ranking, Funded Weekly has not independently checked these results.
Pricing: Carbon launches at $2 per million input tokens and $10 per million output tokens (introductory price, per Google), the same as Argon, with cached input priced at 95% off. Once the introductory period ends, Google says the price goes to $4 per million input tokens and $20 per million output tokens. Google didn't say when the introductory period ends.
The announcement is signed by Koray Kavukcuoglu, SVP, Google DeepMind and chief AI architect at Google.
Sources
- Google blog: "Gemini 4 Carbon: our next frontier model," Oct 28, 2026
- Google blog: CEO remarks, Q3 2026 call (confirms Carbon was announced Oct 28)
- Artificial Analysis Intelligence Index v5.0 and Gemini 4 Carbon (High) model page, read Oct 29, 2026