Custom instructions no longer work

[polepole]

Hi, Welcome to the community!

I tested it a few days ago here:

Does the "Customize ChatGPT" feature actually influence responses across all models?

I tested, and interesting, not only GPT-4 models, but all models follow " Customize ChatGPT". Some of them follow custom instruction perfectly. So, on the Help page of OpenAI is not updated yet because reasoning models also follow custom instruction. Please see reasoning models’ thinking process, they remember and follow it, only a tiny mistake on reasoning on o3-mini. Task 4 4o 4o-mini o1 o3-mini o3-mini-high Using UserName …