OpenAI shadow testing GPT 5.5
r/ChatGPT
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Generative AI
Seems like they're asking for "feedback on GPT 5.4 Pro" (which is obviously just GPT-5.5). Haven't tried it out yet but initial reception seems positive - a lot of people reporting much faster output speed and better code quality, especially in UI/UX. Would be great if this is the model that finally makes ChatGPT good at UI (the one coding area it was lagging behind Claude/Gemini in) submitted by /u/mtrlst [link] [comments]