--- title: A third of webpages published since ChatGPT’s launch... description: A Pew Research study using Common Crawl data and Pangram's AI detection technology found that 35% of English-language webpages published after ChatGPT's... canonical: https://daily.dev/posts/a-third-of-webpages-published-since-chatgpt-s-launch-show-signs-of-ai-authorship-study-finds-e8lgyoeml twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: A third of webpages published since ChatGPT’s launch show signs of AI authorship, study finds | daily.dev og:description: A Pew Research study using Common Crawl data and Pangram's AI detection technology found that 35% of English-language webpages published after ChatGPT's... og:url: https://daily.dev/posts/a-third-of-webpages-published-since-chatgpt-s-launch-show-signs-of-ai-authorship-study-finds-e8lgyoeml og:image: https://api.daily.dev/og/posts/E8lgyOeMl.png og:image:alt: A third of webpages published since ChatGPT’s launch show signs of AI authorship, study finds og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # A third of webpages published since ChatGPT’s launch show signs of AI authorship, study finds **[TechCrunch](https://daily.dev/sources/tc)** · 2 min read · 0 upvotes · 0 comments ## Summary A Pew Research study using Common Crawl data and Pangram's AI detection technology found that 35% of English-language webpages published after ChatGPT's November 2022 launch show signs of AI authorship. A broader random sample of pages from the past five years showed only about 10% AI authorship, since it included older, pre-AI pages. Breaking down by domain, .com pages showed AI authorship signs at roughly 10 times the rate of .edu or .gov domains (both around 1%), while .org domains sat at 4.6%. The report notes detection tools like Pangram can misclassify pages, but the findings are likely directionally accurate. It follows a separate Cloudflare report showing bot web traffic has now overtaken human traffic. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What percentage of webpages published since ChatGPT launched show signs of being written by AI? Around 35% of English-language webpages published after ChatGPT's November 2022 release show significant signs of AI authorship, according to Pew Research. This figure came from filtering a Common Crawl sample of webpages to exclude pages published before AI writing tools existed. A broader random sample spanning the past five years showed a lower rate of about 10%, since it included many older, human-written pages. _daily.dev surfaces studies like this for developers tracking how AI is reshaping the web._ ### Which domain types have the highest rates of AI-written content according to Pew Research? .com domains show the highest AI authorship rate, roughly 10 times higher than .edu or .gov domains. Both .edu and .gov sit around 1% AI-authored, while .org domains show a 4.6% rate. The analysis used Open Pangram's detection technology to identify likely AI-written or heavily AI-edited pages. _Understanding domain-level AI content trends helps developers evaluating web data sources on daily.dev._ ## Similar posts on daily.dev - [Dead internet theory becomes measurable fact as AI agents flood the web](https://daily.dev/posts/dead-internet-theory-becomes-measurable-fact-as-ai-agents-flood-the-web-4uwxc0w1l) · The Next Web · 1 upvotes · 0 comments - [How we measured AI writing across arXiv, and where the measurement breaks](https://daily.dev/posts/how-we-measured-ai-writing-across-arxiv-and-where-the-measurement-breaks-ygnpa2wiv) · Hacker News · 0 upvotes · 0 comments --- Tags: [#genai](https://daily.dev/tags/genai), [#chatgpt](https://daily.dev/tags/chatgpt) [View this post on daily.dev](https://daily.dev/posts/a-third-of-webpages-published-since-chatgpt-s-launch-show-signs-of-ai-authorship-study-finds-e8lgyoeml) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"A third of webpages published since ChatGPT’s launch show signs of AI authorship, study finds","url":"https://daily.dev/posts/a-third-of-webpages-published-since-chatgpt-s-launch-show-signs-of-ai-authorship-study-finds-e8lgyoeml","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/a-third-of-webpages-published-since-chatgpt-s-launch-show-signs-of-ai-authorship-study-finds-e8lgyoeml"},"datePublished":"2026-08-20T17:31:22.036Z","dateModified":"2026-08-22T01:54:01.339Z","description":"A Pew Research study using Common Crawl data and Pangram's AI detection technology found that 35% of English-language webpages published after ChatGPT's...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/c98b33ec4569667caffd23ea77fa62d8?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/c98b33ec4569667caffd23ea77fa62d8?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"TechCrunch","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"TechCrunch","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/tc","url":"https://daily.dev/sources/tc"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/a-third-of-webpages-published-since-chatgpt-s-launch-show-signs-of-ai-authorship-study-finds-e8lgyoeml","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"genai,chatgpt","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"TechCrunch","item":"https://daily.dev/sources/tc"},{"@type":"ListItem","position":3,"name":"A third of webpages published since ChatGPT’s launch show signs of AI authorship, study finds"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/a-third-of-webpages-published-since-chatgpt-s-launch-show-signs-of-ai-authorship-study-finds-e8lgyoeml#faq","mainEntity":[{"@type":"Question","name":"What percentage of webpages published since ChatGPT launched show signs of being written by AI?","acceptedAnswer":{"@type":"Answer","text":"Around 35% of English-language webpages published after ChatGPT's November 2022 release show significant signs of AI authorship, according to Pew Research. This figure came from filtering a Common Crawl sample of webpages to exclude pages published before AI writing tools existed. A broader random sample spanning the past five years showed a lower rate of about 10%, since it included many older, human-written pages. daily.dev surfaces studies like this for developers tracking how AI is reshaping the web."}},{"@type":"Question","name":"Which domain types have the highest rates of AI-written content according to Pew Research?","acceptedAnswer":{"@type":"Answer","text":".com domains show the highest AI authorship rate, roughly 10 times higher than .edu or .gov domains. Both .edu and .gov sit around 1% AI-authored, while .org domains show a 4.6% rate. The analysis used Open Pangram's detection technology to identify likely AI-written or heavily AI-edited pages. Understanding domain-level AI content trends helps developers evaluating web data sources on daily.dev."}}]} ```