10% of web pages are now AI-written: Pew Research confirms the Dead Internet Theory

A new study from the Pew Research Center suggests that the "Dead Internet Theory" — the idea that most online content is now generated by artificial intelligence — may be closer to reality than ever. The theory, which dates back to 2021, posits that the internet effectively "died" around 2016 and that much of what users see today is produced by AI bots.

To test this, researchers scanned nearly half a million English-language webpages collected over the past five years using the Common Crawl web archive. The dataset includes material from before the public launch of ChatGPT in November 2022. The pages were run through Open Pangram, an AI detection tool, to identify whether the text was written or edited by AI. Additionally, the team examined a sample of 10,000 pages from the most recent month, looking for phrases, words, and language patterns that are more common in AI-generated content than in human writing.

The researchers acknowledged that AI detection models are not foolproof — they can sometimes flag human-written text as AI-generated and vice versa. Despite these limitations, the study found that 10% of the sampled pages "show significant signs of AI authorship."

"One in 10 webpages as of July 2026 may seem modest," the report states. "But the internet includes a mix of new and old material. A lot of pages in these random samples couldn't have been written by AI. If we filter old webpages out of our samples and look at only the pages published after the release of ChatGPT, the trend is even more pronounced."

The findings add weight to the Dead Internet Theory, which has gained traction among tech commentators and internet users who suspect that the web is increasingly dominated by automated content. While the study does not prove that the internet is entirely "dead," it provides concrete evidence that AI-generated text is becoming a significant and growing share of online content. The rise of generative AI tools since late 2022 has accelerated this trend, raising questions about the authenticity and reliability of information found online.