Pew found strong signs of AI authorship in about 10% of a random sample of webpages, rising above a third among pages published since ChatGPT launched.

ChatGPT and other AI models are now authoring and editing much of the new web.

A peer-reviewed study finds 35% of new websites by mid-2025 are AI-generated or AI-assisted, up from zero before ChatGPT launched in late 2022.