ChatGPT different after upgrading to Plus?

For anyone who has upgraded recently to chat GPT plus, does the Standard model seem to be different in any way? Within the first 20 minutes of using Plus the responses seemed less exact, not catching simple formatting in text and missing points when generating code.

I thing the creators of ChatGPT are dumbing down the AI. Try telling it to count the number of characters in a sentence. IT CAN’T


Like… Imagine having a superb racehorse, then adding weights to it because it’s too fast.

It feels like that’s what they’re doing. Or maybe Microsoft owns them now so they have to give Microsoft the best of the AI and the rest of us the crumbs that are left.