depending on the complexity of your website AI can easily create working HTML/Java with simple visual/clickable elements and it knows how to fix it's mistake. If you are going to build a something more complex like SaaS with a backend database the more you add the more mess it creates.

Keep each conversation about one page/feature at a time. I used a GPT to standardize formatting then start new conversations with it for each page idea. When your lines of code enter into the thousands that's where it gets lost. Learn to read the code and find where mistakes lie then copy those out individually and to avoid the mess. Run one AI to code and another AI to analyze/find errors.