It was true every time though. The capacity of frontier models to tackle complicated issues has improved immensely. I still remember the first time I saw a model do a non-trivial issue end to end, and that was less than two years ago. Now they can genuinely do whole projects with human only as a supervisor / quality checker.

Do they still make mistakes? Sure. So do humans, though, so it would be unrealistic to expect perfection. The question is: does Fable make fewer mistakes than the median human coder? And at this point I'm genuinely not sure anymore.