# Pew finds a third of post-ChatGPT webpages show AI authorship

Published: 2026-08-20T17:32:34.449Z · Source: TechCrunch AI (https://techcrunch.com/2026/08/20/a-third-of-webpages-published-since-chatgpts-launch-show-signs-of-ai-authorship-study-finds/)
Source date: 2026-08-20
Entities: chatgpt

Pew Research analyzed almost 500,000 English-language pages from the Common Crawl archive using the Open Pangram detection tool, finding 10% of a July 2026 sample showed significant signs of AI authorship overall — rising to over one-third (35%) among pages published after ChatGPT's November 2022 launch. Commercial (.com) domains showed AI-authorship signs at roughly 10 times the rate of .edu or .gov domains (both near 1%), with .org domains at 4.6%.

Why it matters: A rising share of the web that AI answer engines themselves crawl and cite is now AI-written, a feedback loop worth tracking as engines increasingly train on and retrieve from their own output.

## What this answers

**What share of webpages published since ChatGPT launched show signs of AI authorship?**

About 35% of English-language webpages published after ChatGPT's November 2022 launch showed significant signs of AI authorship in a July 2026 snapshot, per Pew Research.

**Does AI authorship vary by domain type?**

Yes — Pew found .com domains showing AI-authorship signs at roughly 10 times the rate of .edu or .gov domains (about 1% each), with .org domains at 4.6%.


Canonical: https://anythingengineoptimization.com/item/2026-08-20-pew-finds-a-third-of-post-chatgpt-webpages-show-ai-authorship/
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