Source? They’ve only denied the API model changing. Not the website.
> No, we haven't made GPT-4 dumber. Quite the opposite: we make each new version smarter than the previous one. > Current hypothesis: When you use it more heavily, you start noticing issues you didn't see before.
I don’t see how it supports your argument. Your comment says “they deny making changes to GPT-4”, and the tweet says “we are making incremental improvements to GPT-4”.
Personal hypothesis is that they have made a few changes to ChatGPT recently - possibly quantization, and almost certainly some tweaks to make it give shorter/less detailed answers.
But by the nature of a probibalistic tool being run by a secretive company, it's hard to say for sure. Maybe I and everyone else complaining have just started to get unlucky answers.