I think I can say I got some 10x speedup with the recent, more powerful models (from Opus 4.5 on). But then again, I am just building CRUD websites, although sometimes there are some challenging tasks like some fancy graphs/plots to show, and some API integration in the backend, etc... but these are the use cases that models are really good at. I have 0 worries about scaling: my apps are internal, so you can think of 10-15 concurrent users at most, usually 5 or less, and 100 or so users in total, which eliminates the whole class of complicated scaling problems. 99% of the devs are probably on the same boat: our day-to-day problems are not complicated, dont need any deep algorithm or data structures knowledge, and models speed up this type of work a lot. Of course, they get very limited on complicated problems