YES. To the point that I literally stopped using it, and have moved BACK to Claud.

This is getting ridiculous. The number of times I have switched from one model back to the other is crazy. I do not have any proof, so its quite possible I'm just delusional. AI psychosis? Either way, it FEELS like these models work really well for a while and then fall off. Switching to the latest model on the competitor always seems better, until it too seems to taper off. By then, a new model is usually available at the competitor, so I switch.

Its possible there's no degradation at all and just a PERCEPTION of it. But to me the end user, it really doesn't matter.