Rumor: Google tests Gemini 4 model codenamed Carbon internally
Google is reportedly testing a Gemini 4 model codenamed Carbon on its internal coding platform Jetski, with employees comparing it to Opus 5.5 for coding; Argon and Barium versions were also tested.
🚨 Gemini 4 Argon / Carbon: What the Internet Is Saying > Google is reportedly testing a new Gemini 4 model codenamed "Carbon" > The model is being tested internally on Google's coding platform, Jetski > One Google employee says Carbon "feels comparable to Opus 5.5" for coding > Another employee reportedly called it "really good" > Google has also tested internal versions codenamed Argon and Barium If these reports are accurate, Google could have a serious coding model on its hands. Do you think Carbon could match or outperform Claude Opus 5.5?