Google's Gemini 4 "Carbon" reportedly matches Opus 5.5 coding

The rumors about Carbon come before Gemini 4 "Argon" has even shipped, pointing to a faster internal release cycle. Google has mapped its models to distinct roles: Argon for frontier reasoning, Flash for speed and volume, Omni for generative media, and Gemma for lightweight, open-weights edge workloads. That positioning suggests Carbon and Barium are likely checkpoints or updates within the Argon family rather than separate tiers, though it remains unclear whether Carbon will ship as an Argon update or a standalone model.

Google Deepmind employee Vedant Misra responded to the Business Insider report on X by writing, "Have you heard of recursive self improvement," referring to using AI to build better AI. OpenAI and Anthropic have reported similar progress. The quick update pace, similar to what Google has done with Flash models, suggests Google may have gotten better at using AI to build new models.

Meanwhile, Google is already retooling its apps ahead of a broader Gemini 4 launch. The Gemini app now shows a new "Automatic" mode for the 3-series models and adjustable reasoning intensity from low to high. Google AI Studio has surfaced a new "Ultra" mode promising "advanced skills and tools." Google's Logan Kilpatrick confirmed the team is working on getting the most out of Argon.