AI Traffic Attribution

Gemini Traffic Attribution

Q: What referrer does Gemini pass?

The standard Gemini web interface passes gemini.google.com as the referrer. The Gemini mobile app and AI Overviews within Google Search may pass different referrers or no referrer depending on the access context.

How Google Gemini sends traffic to websites, how it differs from organic search attribution, and what Gemini-originated visits look like in your attribution data.

Quick Answer

Does Gemini send traffic to your website?

Google Gemini sends traffic to websites when users click links in AI-generated responses. The referrer header identifies the source as gemini.google.com. Server-side attribution classifies these visits as AI Referrer traffic. This is distinct from organic Google search traffic, which arrives via google.com. Gemini traffic and organic search traffic require separate classification to be compared.

Gemini traffic is distinct from organic Google search. The same Google domain family does not mean the same channel or the same intent profile.

Attribution challenges specific to Gemini

Challenge

Gemini traffic is confused with organic Google search

Without a dedicated AI taxonomy, Gemini traffic (from gemini.google.com) may be classified alongside organic Google search (from google.com). They are different sources with different intent contexts. A visitor from Gemini has received an AI-generated response that included your site. A visitor from organic search has seen your listing in a traditional search results page.

The effect

Separating Gemini from organic search allows their conversion rates and session behaviours to be compared independently.

Challenge

Gemini traffic volume is undercounted

Gemini is accessible via the standalone app, via Google Search's AI Overviews, and via mobile. Referrer behaviour varies across these access methods. Visits that do not pass a referrer end up in Direct. The reported volume of Gemini traffic is therefore a lower bound on the actual volume.

The effect

Measurable Gemini traffic is a floor, not a ceiling. Total AI-originated traffic from Google is higher than the attributed figure.