Google's Gemini 4 Argon model spotted in Antigravity
AIHidden references to a Gemini 4 Argon model with low, medium, and high reasoning efforts have appeared recently in Antigravity, according to testingcatalog. Business Insider reported that Google employees are testing an internal Gemini 4 checkpoint called "Carbon," which performs at the Opus 5.5 level on coding tasks.






