You can spot an AI-generated marketing site within a few seconds. Not because the design is bad, but because it has clearly come out of the same toolset, with the same defaults, as twenty other sites that month.
The hero claim is bold but generic. Two buttons. A short paragraph that promises clarity. Three cards explaining what the company does. A testimonial slider. A logo strip. A pricing table that hedges. A footer with the social icons in the same column, in the same order, in the same colour.
Each individual choice is fine. The total is the problem.
AI builders reuse the same patterns
The website builders, model demos, and component libraries that generate these sites are not aesthetically broken. They have been trained on, and prompted towards, "modern, clean, professional, conversion-optimised" examples. That phrase is a fingerprint. Ask for it and you receive the median of the last five years of B2B marketing pages, with mild reskinning.
This is not unique to AI. Designers have always had reference libraries, dribbble feeds, framework defaults. What is new is the speed and scale. Five years of landing-page design can be averaged into a layout in seconds. The result is a site that looks like every other site shipped that month from the same toolset.
Sameness is most visible in the parts of a page that should differ the most: how the business explains itself, what it puts first, what it leaves out, how it handles proof.
Layout is only one design decision
A presentable layout is now cheap. A site with a point of view is not.
The work that decides whether a site feels distinctive is the work that does not surface in a generated draft:
- choosing what not to put on the page
- deciding which proof point earns its place near the top
- writing in the voice of someone who has met the customer
- restraining the visual system to a small set of confident decisions
- giving the page a rhythm so it does not read as a stack of identical cards
These are taste decisions. They depend on knowing the business. AI tools do not currently have that context, and a thirty-word prompt cannot give it to them.
Three similar homepages show the pattern
Look at three AI-generated agency or SaaS sites side by side and notice how often:
- the hero uses the same cadence: bold claim, soft second line, two buttons.
- the next section is "Three things we do" with three icon cards.
- the section after that is "How it works" in three or four numbered steps.
- the social proof is a logo strip followed by a single testimonial in a quote block.
- the close is a call-to-action band with the same heading style as the hero.
The order is almost identical. The component types are almost identical. The hierarchy is the same. Even the margins feel the same.
Now ask which of these sites you would remember tomorrow. Then ask which of them would change in any meaningful way if you replaced the company logo with a competitor's. If a site can swap brands without anyone noticing, the design is not doing real work.
Where AI helps with design
This is not an argument against using AI in website work. We use AI in our own front-end and content workflows every day. It is good at drafting components, writing alt text, generating copy variants, exploring colour ideas, refactoring spacing tokens, and turning a vague brief into something concrete to react to.
The trap is treating the first plausible draft as the answer. AI gives you a fast starting point. The taste, hierarchy, restraint, and voice still need a person deciding what stays and what goes.
When that step is skipped, you get the sites we are talking about: technically fine, visually unobjectionable, almost completely interchangeable.