Gemini 4 Carbon leak: coding feel compared to Opus 5.5
A rumor roundup says Google staff are testing a Carbon checkpoint on internal coding platform Jetski, with one developer calling its coding 'comparable' to Opus 5.5; Carbon also reportedly appeared on Chatbot Arena with praise for 3D output, and Argon went GA on October 13.

Gemini 4 Carbon leak: could Google finally match Opus 5.5? Here’s what’s circulating >Google employees are reportedly testing a Carbon checkpoint on Jetski, Google’s internal coding platform. >One developer said Carbon’s coding “feels comparable” to Opus 5.5. That’s a single impression, not a benchmark. >A Carbon checkpoint also reportedly appeared on Chatbot Arena, where early testers praised its 3D output. >Argon, the first Gemini 4 model, became generally available on October 13