Google unveils Gemini 4 Carbon, a cybersecurity-focused AI model going to cyber defenders first
Google on Wednesday announced Gemini 4 Carbon, its newest frontier AI model, built for long-running coding tasks and for finding and fixing software security flaws, Reuters reported. Google said it will first offer Carbon to a subset of cybersecurity defenders through its Fairwind Program while it tests safeguards. The launch came two weeks after Gemini 4 Argon.
What it does: Google said Carbon can work on complex, multi-step engineering tasks, and that its internal teams have seen it run for days to find and patch subtle bugs in large codebases, according to Google’s announcement. Reuters reported that Google says Carbon generates secure code at more than twice the success rate of Argon on internal benchmarks.
Google’s benchmark claims: Google said Carbon scored 88.2% on SEC-bench Pro for finding vulnerabilities, 54.8% on ExploitGym for exploitation and 71.0% on CWE-bench for patching, measured without guardrails. These are the company’s own reported results, not independent tests.
Who gets it: Google said it is taking part in the U.S. government’s voluntary process for pre-release model testing and will phase in access for more trusted partners before releasing Carbon to developers, businesses and consumers. It did not give a date for wider release.
Price: Carbon will cost $2 per million input tokens and $10 per million output tokens at launch, the same introductory price as Argon, Reuters reported. Google said the price rises to $4 and $20 after the introductory period.