Google employees are testing a new Gemini 4 model called Carbon that they say matches Anthropic's Opus 5.5 for coding tasks.
Google employees are testing a new Gemini 4 model internally named Carbon, which one employee said feels like Anthropic's Opus 5.5 for coding. businessinsider
Carbon was made available on Google's internal coding platform Jetski in recent days. businessinsider
Google has tested multiple Gemini 4 variants under the codenames Argon, Barium, and Carbon. the-decoder