Google's most frontier AI model: Gemini 4 Argon debuts, surpassing Claude Opus 5.5 in long-cycle code engineering DeepSWE test

AI Brief

Google published Gemini 4 Argon on yesterday (September 30), calling it the company's most advanced AI model to date, but it is not yet fully open to the public.

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Gemini 4 Argon Hasn't Fully Opened Yet; What Should Teams Test First?

Google’s Gemini 4 Argon introduction places current evaluation within Fairwind and specified participants; it does not establish direct access for every team.

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