The best approach I've tried that actually increases quality (and _may_ speed up development) is to write ~80% of the code yourself and then ask LLM to review it thoroughly. While it's doing its thing you're also thinking about the code and reviewing it yourself in parallel. You then merge the findings and fix stuff worth fixing. At this point the authorship of the code is still mostly yours, you _understand_ the system and you ship fewer bugs, slightly faster than otherwise. It's a moderate improvement to the workflow, but it actually doesn't cost nearly as much either, and definitely doesn't produce rage at the machine from the slop. The only downside is that it requires lots of discipline, and it's a relatively rare commodity among software engineers these days.