I haven't found anyway to make an LLM produce exceptional code at all. It is all far far too verbose and the models explain that this is necessary so that they can read and understand the code to modify it as it's being built.

But I can write much cleaner code that is easily human readable and the models can read it and modify it just fine.

So I'm not really sure what the issue is as to why they can't create high quality simple code. In some industries where there is major money on the line with every implementation the current state of LLM produced code is fully unacceptable.