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Large Language ModelsAI Business & IndustryTHE DECODERPublished: Apr 25, 2026, 04:01 JST

OpenAI releases GPT-5.5 and signals larger AI breakthroughs coming, but admits recent progress has stalled

OpenAI releases GPT-5.5 and signals larger AI breakthroughs coming, but admits recent progress has stalled

OpenAI deployed GPT-5.5 and its chief scientist Jakub Pachocki publicly stated that AI progress over the past period has been 'surprisingly slow' — a candid admission that the rate of improvement has not matched earlier expectations.

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