Google said to be testing a stronger Gemini 4 version, Carbon, internally
Citing Business Insider, the post says Carbon is live on Google's internal coding platform Jetski, where employees compare its coding ability to Opus 5.5, and describes the codename chain as Argon, then Barium, then Carbon.


🚨Google内部正在猛测Gemini 4更强版本 Carbon!编码能力对标Opus 5.5 ! 据Business Insider独家报道,员工反馈炸裂: 🔹Carbon在编码能力上感觉直接对标Anthropic Opus 5.5(目前最强长期Agentic Coding模型) 🔹已在Google内部编码平台Jetski上线,供员工实测 🔹员工原话:“Carbon真的很好!”“感觉像Opus 5.5” 🔹内部代号三连:Argon(即将公开)→ Barium → Carbon(Barium-B被选为公开版Argon) 🔹早期Argon版本在部分coding任务上落后于Opus 5,但Carbon可能彻底补齐短板 RSI(递归自我改进)相关讨论也在升温,值得持续盯紧。 #Gemini4 #GoogleAI #AI #Claude #Opus55 #AICoding #Gemini #AgenticAI #Argon
This post quotes another post: “Chinese user complains Gemini 4 Argon is demoed but not selectable”