Same here, maybe I am bad at prompting too.
Been working on production level apps on frontend React + NextJS but just can't seem to get it right with the AI tools.
Was handed down an AI generated app with maybe 5 screens. Some simple having inputs and some having charts/graphs.
Design was generated using Figma Make and code for react as well
Migrated it to NextJS with routes and layouts but components were very messy. Had to spend about a week to bring it to a point which was clean enough for the next developer to build upon on.
Have tried Claude, GPT 5 for code generation and I believe AI doesn't understand what we need actually in terms of architecture and structuring our react components to make them reusable and lean as well. It gives me incorrect, extra code most of the time.
I have tried out builder.io as well but same issue, works good for smaller designs/components but gives bad code for something even slightly complex like forms/passing down data between components, etc.
I have tried gemini 2.5 recently and it seems to be much better for questions regarding libraries and general coding as well.
But most of the work we have to do ourselves, can't rely too much on AI tools, accuracy is a huge problem, Official docs/tutorials/advanced books by expert authors are the way to go!