I think it depends on the tasks you use it for. Bootstrapping or translating projects between languages is amazing. New feature development? Questionable.
New feature development in web and mobile apps is absolutely 10% more productive with these tools, and anyone who says otherwise is coping. That's a large fraction of software development.
I don’t write frontend stuff, but sometimes need to fix a frontend bug.
Yesterday I fed claude very surgical instructions on how the bug happens, and what I want to happen instead, and it oneshot the fix. I had a solution in about 5 minutes, whereas it would have taken me at least an hour, but most likely more time to get to that point.
Literally an hour or two of my day was saved yesterday. I am salaried at around $250/hour, so in that one interaction AI saved my employer $250-500 in wages.
AI allows me to be a T shaped developer, I have over a decade of deep experience in infrastructure, but know fuck all about front end stuff. But having access to AI allows me as an individual who generally knows how computers work to fix a simple problem which is not in my domain.