Google introduces Gemini 4 Carbon
Google announced Gemini 4 Carbon, a model aimed at long-running coding work and defensive cybersecurity.
- Gemini 4 Carbon was announced for long-running coding, agent workflows and defensive cybersecurity.
- Initial access will be limited to cyber defenders and trusted partners.
- The performance results cited were disclosed by Google.

Context and analysis by Noosigma AI
Editorial summary and context based on the cited source. Claims and results attributed to the organization are reports from that source; they do not constitute independent validation by Noosigma AI.
The company describes Carbon as a model for agent workflows that need to persist through multiple steps, including investigating and fixing problems across large codebases.
Why it matters
Google reports results on vulnerability detection, validation and remediation evaluations. The announcement’s metrics and comparisons were disclosed by the company and should be read in light of each evaluation’s methods and limits.
The rollout starts with a selected group of cyber defenders and is expected to expand to trusted partners. Google is also participating in a voluntary government pre-release evaluation process; developers, businesses and consumers do not yet have access.
What to check
The announcement pairs specialized capabilities with a gradual rollout, but it is not an independent evaluation. Source: Google, October 28, 2026.