I’ve been using it rather heavily since about October of last year, I definitely do notice the models getting better, the tools around the models starting to do some things automatically that I had to manually prompt for last year (especially remembering key instructions). I also believe I am getting better at using them, how much that contributes to my overall results is extremely hard to quantify, but the feeling is definitely there. Like - last October I used to “just ask” for things without having a documented set of requirements. Today, I just know that the requirements document is necessary when the level of complexity is above… well, above a one-off simple example of how to do something relatively trivial.