# New study of more than 5 million pages estimates 24% of crawlable web pages carried AI-written text in August 2026

The estimate is more than twice the 10% Pew Research Center measured in July, a gap that reflects different definitions and detectors, but both studies find the share was near zero before 2022 and is rising fastest on commercial sites.

- Published: 2026-10-29T06:14:22.974Z
- Canonical: https://polylog.news/ai/2026-10-29/new-study-of-more-than-5-million-pages-estimates-24-of-crawl
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [Polylog editors](https://polylog.news), [arXiv](https://arxiv.org/abs/2610.36631), [TechCrunch](https://techcrunch.com/2026/08/20/a-third-of-webpages-published-since-chatgpts-launch-show-signs-of-ai-authorship-study-finds/)

About 24% of crawlable web pages in August 2026 contained AI-generated or AI-edited text, according to a new study of 5.1 million pages dated from 2019 to 2026, as summarized by AI Post. Before 2022, the estimated share was close to zero. T…

This story is for subscribers. Read it in full at https://polylog.news/ai/2026-10-29/new-study-of-more-than-5-million-pages-estimates-24-of-crawl (subscription information: https://polylog.news/pricing).