· Chand Lal · originally posted on LinkedIn
AI Traffic in GA4: Why ChatGPT Shoppers Hide in “Unassigned” (and 3 Fixes)
Shopify says AI-driven orders grew 3.3x, yet CHEQ found only 1 in 9 AI visits carries an AI referrer. Why AI shoppers land in Unassigned + 3 fixes.
Key takeaways
Shopify says AI-driven orders grew 3.3x, but CHEQ found only 1 in 9 AI visits carries an AI referrer. The rest hide in UTM traffic or "Unassigned".
Here are 3 things I'd set up this week. DM me if you want a second pair of eyes.
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What Shopify reported
On its Q3 2026 earnings call on 3 November, Shopify said AI-referred traffic to its merchants’ stores grew 2.6x year on year, and orders from these channels grew 3.3x.
Why your reports don’t show it
CHEQ followed 14 retailers from 19 August to 18 October 2026. Only 1 in 9 AI-referred visits arrived with an AI referrer. The rest came with a UTM tag, which many analytics setups file as ordinary UTM traffic or as “Unassigned”.
So ChatGPT and co. send you buyers, and your channel report gives the credit to something else.
Desktop vs mobile: 3.9% vs 0.6%
AI-referred visitors bought at 3.9% on desktop and 0.6% on mobile. Humans: 1.6% on desktop, 1.7% on mobile. And 86% of AI-referred visitors arrived on a phone.
AI shoppers convert well where the journey works, and most of them land where it doesn’t. A blended rate hides both.
3 things to set up this week
- AI channel group. Put ChatGPT, Gemini, Perplexity and other AI sources, including their UTM-tagged visits, into one channel.
- Split by device. Blended rates hide the leak. Look at AI traffic on desktop and mobile separately.
- Fix mobile PDPs. The product pages AI sends people to are where mobile sales get lost.
Want a second pair of eyes?
If you want me to look at your analytics, DM me on LinkedIn or book a free 20-min check.
FAQ
Why does AI traffic show up as “Unassigned”?
Most AI-referred visits arrive with a UTM tag instead of an AI referrer. CHEQ found only 1 in 9 carried an AI referrer; many analytics setups file the rest as UTM traffic or as Unassigned.
How fast is AI commerce growing on Shopify?
On its Q3 2026 earnings call, Shopify said AI-referred traffic grew 2.6x year on year and orders from these channels grew 3.3x.
Do AI shoppers convert better than other visitors?
On desktop, yes: 3.9% vs 1.6% for humans across 14 retailers (CHEQ). On mobile, no: 0.6% vs 1.7%, and 86% of AI-referred visitors arrive on a phone.
How do I make ChatGPT traffic visible in my analytics?
Set up an AI channel group for ChatGPT, Gemini, Perplexity and other AI sources, including UTM-tagged visits, and split it by device.
Where should I start fixing?
On mobile product pages, because that’s where AI sends people and where most AI-referred sales get lost.
