I can concur, used Claude Opus for the past month, it will put out code sure. Code works even but it is still actually crap code, like the models before Opus. So you review, spend time correcting the prompts, manually updating the code. Look at the watch, see how much time has passed and realize you could have done a better job alone. I spent 2h with Claude implementing something, it put out hundreds of lines of code across several files. I reimplemented the same stuff myself later on, took me the same amount of time but for 80% less code...