Common Crawl

AI writing

2026-08-22 13:33:15

Pew Finds 35% of Post-ChatGPT English Pages Show Signs of AI Writing

Pew Research Center says about 10% of English-language webpages now show significant signs of AI authorship, a figure that rises to 35% for pages published since ChatGPT launched in November 2022. The study analyzed roughly 490,000 pages from Common Crawl, running the text through Open Pangram, an AI detection model built by Pangram Labs. The gap is stark by domain: .com pages show AI traces at about 10 times the rate of .edu and .gov sites, both near 1%, while .org sits around 4.6%. Pew says detection models can misclassify individual pages, and “significant signs of AI authorship” does not mean a page was written entirely by a machine. Still, the report says AI-style cues such as em dashes, Oxford commas, and words like “delve” and “testament” have become more common since 2023, and .com AI-authorship rates have climbed from about 1% in January 2021 to 9.35% in January 2026.

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AI writing

2026-08-21 02:32:58

Pew study finds AI traces in 35% of new web pages launched after ChatGPT

A large-scale analysis cited by TechFlowPost says AI involvement is showing up across a growing share of newly published web content. The study, released this week by Pew Research Center and based on Common Crawl archives, sampled 10,000 English-language pages from each of 49 web crawls conducted between January 2021 and July 2026, for a total of roughly 490,000 pages. Researchers then scanned the sample page by page using an AI detection model called Open Pangram. In the July 2026 snapshot, about 10% of English web pages showed what the study described as significant signs of AI writing or heavy AI-assisted editing. Among pages published after ChatGPT launched on Nov. 30, 2022, that figure rose to 35%. The report also found major differences by domain type, with about one in 10 .com pages showing AI-writing features, compared with 4.6% for .org pages and roughly 1% for both .edu and .gov. The article links those findings to traffic data from Cloudflare and HUMAN Security, which indicate that machine traffic is rising quickly as well. It argues that the web is moving toward a system where machines increasingly produce content for other machines to consume, a shift that could weigh on publishers that rely on search traffic and raise the value of verifiable human-original reporting.

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