Earlier quoted context omitted.
New proposal for LLM-on-LLM wars: Have an automated system that retrieves every front page URL link on HN and feeds it into a "smart" LLM for analysis of whether or not the site html, css, JS and general template layout match that of a known LLM generation engine. Then give it a "probably vibe coded slop" rank number. If you can't beat 'em, let them fight...
I haven't tried it personally but my understanding from friends is that Pangram is very accurate, at least for now. https://www.pangram.com/
Or since a lot of vibe coded static sites are just plain html, cs, js, a first try attempt via wget to mirror the first 500KB of the site and then analyze it.