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Perceived Drop in GPT-5 Quality Over the Last Few Weeks

OpenAI Developer Community June 1, 2026
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I rarely go to forums to complain, but this time I felt the need to do so because I use the model frequently and I can clearly tell that the performance is not the same. I don’t know how to prove this objectively, but people who use it frequently will understand what I mean. If they have not noticed it yet, they probably will.

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