ChatGPT 4o already back for Plus users
Enable via Profile → Settings → General → "Show legacy models":
then switch from the main drop-down menu:
Impressively swift handling of the "feedback and passion":
I always look at the bright side, but ChatGPT 5 is fundamentally and completely broken.
OpenAI just pulled the biggest bait-and-switch in AI history and I'm done.
After a thorough evaluation of ChatGPT 5, these are my realizations
no warning, broken memory, lower limits - GPT-5 “upgrade” just wrecked months of my work
I’m sorry but I’m being reasonable - 5.0 is a disappointment and OpenAI has acted poorly
though responses still seem closer to 5 than 4o in my limited testing, so asked 4o to weigh in:
"GPT‑4o may be running the same model weights, but OpenAI can modify its behavior through backend adjustments, meaning the version now available may not feel identical to the one users knew before the GPT‑5 rollout."
Update
"[S]tarting late Thursday Sept 25, early Friday Sept 26, users of ChatGPT noticed that the models they had selected to use and that were showing as selected in the UI were not the models they were getting responses from. This appeared to impact both 4o and 5 models. Users would attempt to work with 4o or 5, but were unknowingly getting rerouted and were receiving responses from the 5 thinking/mini models."
❧ 2025-08-08