Sources: as Google prepares to roll out its Gemini 4 Argon, staff are testing a new version internally named Carbon; one staffer says it "feels like Opus 5.5" (Hugh Langley/Business Insider)

Hugh Langley / Business Insider: Sources: as Google prepares to roll out its Gemini 4 Argon, staff are testing a new version internally named Carbon; one staffer says it “feels like Opus 5.5” — As Google prepares to roll out its new Gemini 4 ‘Argon’ model to the public, staff inside the company are…