A third of web pages published since ChatGPT’s launch show signs of AI authorship, study finds

摘要: Over one-third of web pages published after the release of ChatGPT show signs of being written by AI, according to

a new study from Pew Research

正文

Over one-third of web pages published after the release of ChatGPT show signs of being written by AI, according to

a new study from Pew Research

released on Thursday. The report corroborates

other studies

that detail how much of the web’s newer web pages are now either written by or “substantially edited” by AI, the firm says.

It also arrives shortly after internet infrastructure provider Cloudflare

reported

that bot web traffic had overtaken human web traffic — a milestone that was reached sooner than the company had estimated.

Pew’s data, however, is focused not on who or what is browsing the web, but on what is being browsed. And apparently, much of it is bots reading web pages written by other bots.

To compile the report, Pew said it used the

Common Crawl

web archive to collect nearly half a million English-language web pages from the past five or so years, starting a couple of years before ChatGPT’s November 2022 release. Pew then used

Open Pangram’s

technology to detect how many were likely written or heavily edited by AI.

In a random sample of 10,000 web pages collected in July 2026, around 10% showed “significant signs of AI authorship,” Pew said.

However, Pew pointed out that a random sample like this would inevitably include older web pages — ones published before AI writing tools even existed, and therefore couldn’t have been AI written.

% of web pages showing significant AI editing or authorship.

Image Credits:

Pew Research

To get a better sense of how much of the web is now being written by AI, Pew filtered out the older web pages and focused only on those published after the release of ChatGPT.

In this same snapshot with the older pages removed, signs of AI authorship were found in over one-third (35%) of the pages.

Image Credits:

Pew Research

Drilling down into domains themselves, Pew found that URLs with a .com domain showed signs of AI authorship at around 10x the rate of a .edu or .gov domain (both of which were around 1% AI

来源: TechCrunch AI