Gemini Carbon leak: a new Gemini 4 model built on Argon
Rumor says Gemini Carbon, a new Gemini 4 model built on Argon, is in early access for Google teams and partners, targeting long-horizon coding, agent workflows and 3D generation at 2–4x slower speed.
Gemini Carbon is a new model within the Gemini 4 lineup, an iterative evolution built upon the released Gemini 4 Argon architecture. Early access is live for Google internal teams and a small group of partners. It’s deployed on Google’s internal code platform Jetski for select staff testing. Deep reasoning: Stronger logical reasoning compared to Gemini 4 Argon.Core focus areasLong-horizon coding: Tuned for complex, extended programming work, closing gaps that held back prior models on lengthy coding tasks.Autonomous agent workflows: Supports multi-step, self-executing agentic workloads.3D content generation: Enhanced 3D scene generation. Speed & stability: It runs 2–4× slower than Argon, but delivers superior stability and sustained reasoning for complex tasks.Performance notesCoding: Internal testers report Carbon’s code output sits near or on par with Anthropic’s Claude Opus 5.5. Whispers say Carbon has achieved an RSI breakthrough. It can autonomously patch code and iteratively improve its own abilities, stoking industry chatter that AGI may be drawing near. It’s positioned to go head-to-head with Opus 5.5 — at drastically better value.
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