AI referral traffic

Site visits that come from someone clicking a link inside an AI answer engine. You isolate it in GA4 with a custom channel group matching the AI platforms’ domains. Treat the figure as a floor, not the truth: several platforms strip the referrer (in-content ChatGPT links, Grok), so those visits land as “direct” and the reported number is an undercount.

First used in: 3.9 · Measuring AI visibility