A new study conducted by the Center showed Pew Research More than a third of web pages published after the launch of ChatGPT bear indications that they were written or significantly modified using artificial intelligence, in a new indication of the accelerating spread of machine-generated content on the Internet.
The study relied on data from archives Common CrawlThe researchers analyzed about half a million pages in the English language published during the past five years, and used specialized technology to monitor indicators that indicate that the content was authored or modified by artificial intelligence.
In a random sample of 10,000 pages collected in July 2026, it showed about 10% Among them are clear indications of the use of artificial intelligence in writing. But this percentage included old pages published before the advent of modern artificial intelligence tools.
After excluding pages published before the launch of ChatGPT in November 2022, the percentage rose to more than a third, as it showed 35% of pages Indications that it was authored or significantly modified using artificial intelligence.
The study showed a large discrepancy between the domains of the sites, as the pages carrying the domain .com AI typing indicators are about 10 times more visible than other websites .edu And .gov, in which the percentage reached about 1%, while websites were registered .org Rate 4.6%.
The researchers pointed out that the AI detection tools are not completely accurate, and some human pages may be classified as automatically generated, but the results on a large scale give a clear indication of the growing presence of artificial intelligence in the production of web content.
The study also observed an increase in some linguistic styles that are used as potential indicators of writing with artificial intelligence, including the excessive use of long dashes, commas before the conjunction, and phrasings of the type “Not X, but Y.”.
