AnalysisAI ModelsOctober 9, 2026

Google tests Gemini 4 "Argon" and internal "Carbon" checkpoint

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References to Gemini 4 "Argon" with low, medium, and high reasoning efforts appeared hidden in Antigravity, while Gemini web now shows the same reasoning selector for all models. Reports say Google is already testing a next internal checkpoint, "Carbon," said to approach Opus 5.5 level.

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