Models & products In focus
Google is testing Gemini 4 Carbon: an employee compared its coding to Anthropic's best model, Opus 5.5History·Gemini 4 Argon release
If the leak is accurate, Google is rolling out new Gemini 4 variants quickly and may already be catching up with Anthropic's best coding model, but for now that is one employee's word.
Sources 2
According to Business Insider (reporter Hugh Langley), as relayed by The Decoder, Google is testing several Gemini 4 variants: Argon, Barium and Carbon. Carbon runs on Google's internal coding platform Jetski, and one employee compared its performance to Opus 5.5, Anthropic's strongest coding model; it is reportedly stronger than Argon at programming. Google DeepMind employee Vedant Misra, per the same report, attributed the fast pace of updates to "recursive self-improvement." There is no official confirmation.