Google announced Gemini 4 Carbon on 28 October 2026, with initial access for selected cyber defenders through its Fairwind programme. Its announcement says wider availability will follow.
Google reports scores of 88.2% on SEC-bench Pro, 54.8% on ExploitGym and 71.0% on CWE-bench. These are attributed evaluation results, not guaranteed success rates on a reader's software.
Access is the immediate limitation
An announcement is not a public release. Readers planning a deployment should check current eligibility rather than assume the model is available in their usual tools.
MicLinks Radar has not independently tested Carbon. A useful assessment still needs reproducible tasks, review of proposed patches and documented failures. We are not presenting Google's figures as our own measurements.