Why do AI-generated websites all look the same?
The purple gradient, the glass cards, the same centred hero on every Lovable and v0 build. There is a real reason for the sameness, and a quick way to tell whether your own site has it.
AI-generated websites look the same because the models behind tools like Lovable, v0 and Bolt were trained on the same popular components and reach for the same safe defaults. Ask any of them for a landing page and you tend to get the Inter typeface, a violet-to-indigo gradient, glass cards with soft shadows, a centred hero, and shadcn/ui blocks in the same order. None of it is broken. It is the statistical middle of everything the model has seen, so most sites converge on one template. The sameness is a default you can change, not a verdict on your work.
The look, decoded
Once you have seen the pattern, you cannot unsee it. These are the tells that turn up again and again, whichever builder produced the page:
- The purple gradient. A violet-to-indigo wash on the hero, the buttons, or a glowing orb behind the headline. It is the single most recognised AI tell, so common that "is your vibe-coded app purple too" has become a running joke.
- The Inter typeface. Clean, neutral, and on roughly every AI build, because it is the default in the component libraries the models learned from.
- Glass cards. Semi-transparent panels with backdrop-blur, a faint border and a soft shadow, floating on a dark or gradient ground.
- Centred everything. Centred hero, centred subhead, one primary button, a row of three feature cards below. The same skeleton every time.
- Stock components. shadcn/ui blocks with rounded-2xl corners, wired up correctly and styled identically to ten thousand other sites.
- Placeholder icons. Emoji or lookalike line icons standing in for a real icon system, usually a rocket, a lightning bolt and a checkmark.
Why the models converge on one design
A language model predicts the most likely next token. For design, the most likely choice is the most common component, colour and layout in its training data. That data is dominated by component libraries, framework tutorials and starter templates, so the model treats their defaults as the correct answer. It is not trying to be original. It is trying to be probable, and probable has a specific, repeated shape.
An AI builder hands you the average of everything it has seen. The average is competent, and it is anonymous.
The builders make this worse by shipping a component kit like shadcn/ui on Tailwind with an out-of-the-box palette and spacing scale. Most people accept the defaults and ship, so thousands of sites inherit the same starting point without anyone deciding it should look that way. Sameness is not a bug in any one tool. It is what happens when everyone starts from the same square and never moves off it.
Does it matter if your site looks AI-made?
The look is not a moral failing, and the components are genuinely good. But it costs you two things that are hard to win back.
Trust. Visitors have quietly learned to read the generic AI look as "thrown together quickly", fairly or not. That judgement lands before they read a single line of your copy, and it colours everything after it. A site that looks considered signals a product that is considered.
Distinctiveness. If your homepage is indistinguishable from the last five a buyer scrolled past, it is forgettable, and forgettable is expensive. You do not need to be loud to stand out. You need to look like a decision was made, because on most AI-built sites, visibly, one was not.
See how AI-built your site looks
Paste your URL into the AI Slop Score. You get a score from 0 to 100, the exact design tells it found on your page, and a copy-paste prompt to fix them.
Free, about a minute, no card.
How to tell if your own site has the look
You do not need a tool to get a first read. You need three honest tests.
The squint test
Blur your eyes at your homepage. If what is left is a purple-tinted hero, one centred button and three cards, you are looking at the template, not your brand.
The side-by-side
Generate a landing page in two AI builders and set yours beside them. If a stranger could not reliably pick which one is yours, that similarity is the whole problem in one glance.
The scored read
The honest option is to grade the design against the known tells rather than trust your own eye, which has usually gone blind to a site it has stared at for weeks. That is exactly what I built the AI Slop Score to do: it reads your page, scores how AI-generated the design looks, and names the specific tells doing the damage.
Spotting the look is the easy half. Changing it is a specific set of moves, not a vibe, and I wrote those up in how to make your AI-built site not look AI-built.
