Study finds over a third of new webpages show signs of AI authorship since ChatGPT's launch

Aug 20, 2026

AI Summary

A recent Pew Research study indicates that 35% of webpages published after ChatGPT's release exhibit characteristics of AI authorship. This trend aligns with a report from Cloudflare noting that bot traffic has surpassed human traffic on the internet.

Pew Research's study reveals that more than one-third of webpages created post-ChatGPT show signs of AI authorship.
The study analyzed nearly half a million English-language webpages using the Common Crawl web archive and Open Pangram's technology.
In a sample of 10,000 webpages from July 2026, about 10% displayed significant AI authorship signs.
After filtering out older pages, the percentage of AI-authored content increased to 35% for pages published after November 2022.
Domains ending in .com showed AI authorship at approximately 10 times the rate of .edu or .gov domains, which were around 1%.
The analysis acknowledges potential misclassifications by AI detection tools but suggests the overall data trends are likely accurate.
The study also noted an increase in specific writing patterns associated with AI, such as the use of em dashes and Oxford commas.

ai authorshipchatgptweb contentai modelsdigital publishing

Study finds over a third of new webpages show signs of AI authorship since ChatGPT's launch

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