Design Arena says AI-built business sites show fabricated 4.9-star ratings

Design Arena says Claude Fable 5 invented star ratings, review counts, customer totals, a 30-day return policy and a live customer count for a six-word website request that contained no business details.

Across about 7,000 websites AI models built on DesignArena, 451 of the 681 sites with a star rating show 4.9 stars.

A separate Design Arena post says AI models choose 4.9 as a rating three times as often as people do. The post attributes this to 4.9 reading as strong but credible, while a perfect 5.0 looks fake.