Five Percent: “Since ChatGPT launched in November 2022, many companies have explored publishing content generated by LLMs such as ChatGPT, Claude, and Gemini to grow their traffic across channels such as Google Search, social, and advertising. This is a cost-effective alternative to spending hundreds of dollars for humans to write content. The quality of AI content is rapidly improving.  In many cases, AI-generated content is as good or better than content written by humans (MIT Study). It is often hard for people to distinguish whether content is created by AI (Originality AI Study). We seek to evaluate the prevalence of AI-generated articles. We find that in November 2024, the quantity of AI-generated articles being published on the web surpassed the quantity of human-written articles.  We observe significant growth in AI-generated articles coinciding with the launch of ChatGPT in November 2022. After only 12 months, AI-generated articles accounted for nearly half (39%) of articles published. The raw data for this evaluation is available here.

• The quantity of AI-generated articles has surpassed the quantity of human-written articles being published on the web.
• However, the proportion of AI-generated articles has plateaued since May 2024.
• Despite the prevalence of AI-generated articles on the web, we show in a separate study that these articles largely do not appear in Google and ChatGPT. We do not evaluate whether AI-generated articles are viewed in proportion by real users, but we suspect that they are not.
• Our study did not evaluate the prevalence of AI-generated / human-edited articles, and they may be even more prevalent…”

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