ChatGPT is silently downgrading to mini models

Hello,

I’m on a ChatGPT Plus account, and I’ve noticed that ChatGPT is consistently downgrading me to GPT-5.5-mini silently. The frontend says it’s using GPT-5.6, but when I check the network stream, the resolved_model_slug shows the mini model.

This is deceptive — there’s no indication of why the downgrade is happening, and support has no idea about the issue.

Yes it’s very deceptive. I encounter the same issue

i have same issue after 2 days buy new account

As you can find on this thread, this problem’s been plaguing paid users for a while now, and openai doesn’t seem to give much care.

One way to potentially make them feel the pressure is to do a credit chargeback, or contact media outlets if you have reliable access.

I’m experiencing the same issue as well, and it seems that other users are reporting similar behavior. It may be useful to share our experiences in the main discussion thread, so the full scope of the issue can be better understood and investigated.