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Morning Edition · Thursday, October 29, 2026Published at 2:14 AM EDT · New York
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.
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…
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Part of a tracked trend
AI Text Saturates the Training Corpus
As machine-written text takes a growing share of the open web, verified human-written and pre-2023 data will become scarcer and more valuable, pushing labs toward licensing deals, provenance filtering and synthetic-data pipelines they control.
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