A trusted analytics teacher's 15-minute custom channel group setup, screenshots included.
How to Track AI Referral Traffic (and Leads) in GA4
Orbit Media (Andy Crestodina) May 2025
Open orbitmedia.com →In GA4, build a custom channel group (or use the newer built-in AI Assistant channel) matching referrers like chatgpt.com, perplexity.ai, and gemini.google.com, then compare conversion rates rather than raw sessions. Expect small volume that converts several times better than organic: studies range from 31% higher for ecommerce to 6x or more for SaaS signups. Know that a large share of AI-influenced visits arrives stripped of referrer data and lands in Direct, so whatever you measure is a floor, not the whole story.
17 resources.
A trusted analytics teacher's 15-minute custom channel group setup, screenshots included.
Orbit Media (Andy Crestodina) May 2025
Open orbitmedia.com →Includes the exact regex covering every major AI referrer, ready to paste.
Swydo Jan 2026
Open swydo.com →Combines setup instructions with benchmark conversion data in one read.
Lantern Nov 2025
Open asklantern.com →Covers the dark-AI-traffic problem: 35-70% of AI sessions arrive without referrers.
Authority Tech Jan 2026
Open authoritytech.io →The 94-site ecommerce study that gives you a defensible conversion benchmark.
Search Engine Land Dec 2025
Open searchengineland.com →The original 12-month dataset behind the headline, with methodology you can inspect.
Visibility Labs Jan 2026
Open visibilitylabs.com →The peer-reviewed counterpoint showing lower ecommerce conversion, keeping your expectations honest.
Marketing Science (Kaiser & Schulze) Nov 2025
Open pubsonline.informs.org →Explains the mechanism: AI pre-qualifies buyers before they ever reach your site.
Pixis Feb 2026
Open pixis.ai →A real single-site case study with the messy details dashboards hide.
Seer Interactive Jun 2025
Open seerinteractive.com →Reframes your KPI stack for the AI era: share of voice and pipeline over sessions.
Kyle Poyar (Growth Unhinged) Aug 2025
Open growthunhinged.com →Adds conversion-event tracking on top of the channel group so you measure leads, not visits.
Abmatic Dec 2025
Open abmatic.ai →An independent consultant's concise version if you want the setup done in one sitting.
Nadia Mohamed Jan 2026
Open nadiamohamed.me →Reconciles the conflicting conversion studies by category, so you benchmark against the right one.
ALM Corp Jan 2026
Open almcorp.com →A founder publicly sharing his AI-referral numbers, the benchmark everyone quotes.
Guillermo Rauch (Vercel) Apr 2025
Open x.com →Independent clickstream data to sanity-check your own GA4 numbers against.
Semrush Feb 2025
Open semrush.com →Industry-wide referral volumes so you know whether your AI traffic share is normal.
Digiday Jul 2025
Open digiday.com →A quick alternative walkthrough including the no-setup filter method for a first look today.
FATJOE Oct 2025
Open fatjoe.com →The same ground, over in Brand, web & content, our Starting Up track.