arXivXinhao Song, Su Su, Sirui Song, Hongliang Wu, Wen Shen, Zhihua Wei, Gongshen Liu, Linfeng Zhang, Dongrui LiuMon, Jun 1, 2026, 9:20 AM PDT

score 16.5

AI agents fail CAPTCHA tests designed to stop automation

Original: HLL: Can Agents Cross Humanity's Last Line of Verification?

Writing ELI5 summary…