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  "path": "/t/perceived-drop-in-gpt-5-quality-over-the-last-few-weeks/1382225#post_18",
  "publishedAt": "2026-06-01T18:08:50.000Z",
  "site": "https://community.openai.com",
  "textContent": "Recently, I have noticed more and more complaints about the declining quality of the model in Codex. I did not have these issues before: I used the 5.3 Medium model and was able to solve simple tasks without problems.\n\nNow, even with the maximum 5.5 model, the quality has noticeably declined. The model makes mistakes, duplicates code, and even when I work with small, targeted slices, perform an audit before editing the code, and clearly specify what should and should not be changed, it still finds a way to make an error.\n\nI also noticed that with the 5.5 model in high mode, writing code can take more than 13 minutes,\n\nwhile Gemini Flash Low handles a similar task in just a couple of minutes and even fixes mistakes made by Codex.\n\nI work in both Codex and Antigravity, so I can clearly see the difference in coder quality. Most likely, this is a company decision aimed at reducing token consumption by slowing down the model, but the quality has noticeably decreased as a result.I have already had to fix Codex’s mistakes in Antigravity, including duplicated code, structural issues, and distorted design. This is very noticeable, especially when there is something to compare it with.",
  "title": "Perceived Drop in GPT-5 Quality Over the Last Few Weeks"
}