60% of arXiv text is now AI-written, with fully AI-authored papers at 25%
wandedob · x · 2026-10-28
Running hundreds of papers through Pangram, researchers found 60% of arXiv excerpt text is now AI-generated (biology/medicine 35%), with fully AI-written papers at 25% on arXiv. Year-over-year: arXiv jumped from 31% to 69% AI, ChemRxiv from 24% to 51%, bioRxiv from 16% to 38%, while medRxiv stayed flat around 30%. Human-written papers are entering their twilight.
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