Why Reddit Is Quietly Becoming the #1 Source AI Platforms Cite

Something unexpected showed up in my data. After intercepting hundreds of AI browsing sessions and tracking which sources get cited, one domain keeps appearing at the top: Reddit. Not Wikipedia. Not major news sites. Not official documentation. Reddit. Here's the data, why it's happening, and what it means for anyone creating content online. The Numbers Across 500+ intercepted browsing sessions on ChatGPT, Claude, and Gemini, I tracked every source consulted and every source cited. Here are the top 10 most-cited domains: Rank Domain Citation Frequency Category 1 reddit.com 23% of sessions Forum 2 wikipedia.org 18% Encyclopedia 3 github.com 12% Developer 4 stackoverflow.com 9% Developer 5 medium.com 7% Blog platform 6 nytimes.com 5% News 7 docs.google.com 4% Documentation 8 youtube.com 4% Video 9 forbes.com 3% News 10 dev.to 3% Developer Reddit appears in 23% of all AI browsing sessions as a cited source. That's more than Wikipedia and GitHub combined. Why AI Loves Reddit After studying