"Stopped thinking" - ChatGPT is stuck

It is stuck:

Pressing F5 key in the browser does not help.

Hey @porton.victor, thanks for flagging this.

When you run into the “stopped thinking” state, one quick thing to try is switching models, for example GPT-5.2 Instant or Thinking. Sometimes forcing a different model clears the session and gets things moving again.

If that doesn’t help, I’d recommend clearing your cache and cookies and then logging back in. It’s also worth testing in a private or incognito window, disabling browser extensions especially ad or script blockers, and trying a different browser to see if it behaves the same way.

Give that a try and see if it stabilizes things on your end.