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For web app generation, gpt-5 seems to route my prompt to the reasoning model. Interestingly, gpt-4.1 often produced more creative or aesthetically interesting designs. In some cases, a bit of controlled hallucination (via temperature) is actually desirable, especially when generating UI ideas. Anyone else seeing this tradeoff?

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All of these models generally produce hideous sites that because for some unknown reason we all decided shadcn and tailwind-with-no-design-system should define AI generated UI.

I use image generation for UI layout and have Claude implement it with an actual UI library: usually MUI with theming, but honestly anything with a sane grid system is better than loose tailwind.

I hear you, though I’m less focused on the choice of UI libraries and more on how little control we have over how prompts are routed internally.

Sometimes I want a model that reasons deeply, other times I want one that is more creative. Right now, it feels like gpt-5 forces everything through the same pipeline, even when a different mode would be better suited to the task.

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