# TestingCatalog — Google unveils Gemini 4 Carbon for cyber defenders

- Company: TestingCatalog (testingcatalog.com)
- Announced: 2026-10-28T20:48:38+00:00
- Category: new-model
- Coverage: not counted
- Announcement: yes
- Group: models
- Source: https://www.testingcatalog.com/google-unveils-gemini-4-carbon-for-cyber-defenders/
- Record: https://forck.live/items/28997-google-unveils-gemini-4-carbon-for-cyber-defenders
- Subject: AI models / agents / unreleased features
- Models affected: Gemini 4 Carbon, Gemini 4 Argon, Claude Opus 5.5
- Pricing: $2 per million input tokens and $10 per million output tokens; cached inputs cost 95% less than standard input tokens

Google has unveiled Gemini 4 Carbon, a frontier model it describes as its strongest yet for cybersecurity and long-horizon work, two weeks after Gemini 4 Argon. Carbon ranks first on version 5.0 of the Artificial Analysis Intelligence Index with a score of 59, and second only to Claude Opus 5.5 on the Artificial Analysis Coding Agent Index. In external cybersecurity evaluations run without guardrails, Google says it scored 88.2% on SEC-bench Pro for vulnerability discovery, 54.8% on ExploitGym for exploitation and 71.0% on Collinear's CWE-bench for producing working fixes. Google says internal tests showed more than twice Argon's success rate for secure-code generation, and the Chrome team found it produced high-quality patches at more than 10 times the rate of another lab's large frontier model. The model will initially reach a subset of cyber defenders this week, with trusted partners added gradually through the Fairwind Program before it comes to developers, businesses and consumers. Carbon launches at Argon's introductory price of $2 per million input tokens and $10 per million output tokens, with cached inputs costing 95% less than standard input tokens.

## Evidence

Verbatim from https://www.testingcatalog.com/google-unveils-gemini-4-carbon-for-cyber-defenders/:

> Google has unveiled Gemini 4 Carbon , a new frontier model it describes as its strongest yet for cybersecurity and long-horizon work. The model follows Gemini 4 Argon by only two weeks and will initially reach a subset of cyber defenders this week. Google plans to add trusted partners gradually through its Fairwind Program, then bring Carbon to developers, businesses and consumers through its products after collecting feedback and iterating on guardrails.
> 
> I did say we'd be releasing our models periodically...introducing Gemini 4 Carbon, our next frontier model. Following Argon's release just two weeks ago, Carbon shows the pace at which we’re pushing the frontier, it ranks #1 on the recently updated v5.0 of @ArtificialAnlys … pic.twitter.com/GN9LqZ7Zcf
> 
> Carbon ranks first on version 5.0 of the Artificial Analysis Intelligence Index with a score of 59. In external cybersecurity evaluations conducted without guardrails, it scored 88.2% on SEC-bench Pro for vulnerability discovery, 54.8% on ExploitGym for exploitation and 71.0% on Collinear’s CWE-bench for producing working fixes.

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