If I have to verify the code then I don't see a point in using it to write more than a single method at a time, and that method should be simple enough that I can take a very quick glance and be able to tell it's correct - something like a method that writes an array to a CSV. I don't have that code memorized, especially in the various languages I regularly work in, but I know it when I see it. Anything more complex than that and I think it would take me as much or more time to truly verify the AI's output than to just write it myself.