GPT 5.5 seems to be degraded

Just reporting back here, I cannot tell if the issue has been fixed but it is catching the errors that were caused before the fix, so I don’t know if that is an indication of improvement or not. What does surprise me is that this is 5.5-xhigh and its clear that I have to use the most expensive model to really get meaningful work done. Previously, before the degradations were noticed, I wouldn’t have reached xhigh except for planning or one off problem solving that 5.5-high or med could not fix. I don’t have enough information or confidence yet to switch back to using gpt-5.5-med/high yet. I will continue trying different prompts to see if it can yield any more meaningful changes. Thanks again for your attention to this matter.