Pew: 1 in 10 webpages (35% post-ChatGPT) now shows signs of AI authorship
Pew's Data Labs ran roughly 485,000 webpages through an AI detector and found authorship marks on about 1 in 10 — a share that triples to 35% once you filter to pages published after ChatGPT's launch. The concentration is commercial: .com domains show signs at ~10x the rate of .edu and .gov. AI tell-words like "delve" have doubled since 2023. Pew stresses no single marker flags one page; the finding only holds across large text sets.