AnalysisAI ModelsOctober 6, 2026

Microsoft page reveals OpenAI's GPT-6 series uses Looped Transformers

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A publicly accessible Microsoft page confirms OpenAI has used Looped Transformers across the GPT-6 series, matching earlier reporting by The Information. GPT-6.1 Sol reportedly runs 2 inference passes instead of 3 while sharing GPT-6 Sol's base weights.

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