I can believe that the core GPT-4 model itself has not changed, but clearly they've changed some features. They've added plug-in access, which can change GPT-4'

I can believe that the core GPT-4 model itself has not changed, but clearly they've changed some features. They've added plug-in access, which can change GPT-4's capabilities greatly with some chats. The over all UI of the web site has changed several times (dropdown for GPT-3.0/3.5/4.0 turned into a GPT 3.5|GPT 4.0 button, they added the ability to share chats, and I'm sure there are other small details).