Yesterday I needed to make a simple GUI app for a specific purpose. I haven't done it in a while so I figured it would take some time, but just to try, I drew a picture of the interface I had in mind and told 4o to generate a PyQt5 app for me, and it ... did it. Still took a bit of back and forth for some details but damn if it didn't get me from A to B way faster than if I'd been sitting there figuring out VBoxLayout etc again from scratch after several years. I was impressed.