GA4 Now Tracks AI Traffic Natively. Here's Your 10-Minute Setup (And Your Baseline Assignment)
Big one. As of mid-May, GA4 has a native "AI Assistant" channel. Traffic from ChatGPT, Gemini, and Claude gets classified automatically and sits right next to Organic Search in your default reports. Why this matters for what we do here: every baseline test we've been running — asking engines what they believe about your business — now has a traffic counterpart. You can see whether AI engines are actually sending people, not just whether they mention you. Find it (2 minutes): Reports → Acquisition → Traffic Acquisition → set primary dimension to "Session default channel group" → look for AI Assistant. Rollout is gradual, so if it's not there yet, check back in a few days. Understand what it counts (and what it misses): GA4 classifies by referrer header. When someone clicks a link inside ChatGPT's web interface, the referrer comes through and you get an AI Assistant session. When someone clicks from a native mobile app that strips the referrer — you get a Direct session, same as always. So your AI Assistant number is the minimum. Real AI traffic is higher. Also: not retroactive. Your historical AI visits are still buried in Referral and Direct, and they're staying there. Comparisons across May 13 are broken by design. Set it up properly (8 minutes): Annotate May 13 in your GA4 property so future-you knows why the channel appears from nowhere. If you already built a custom AI channel group with regex (some of you did), don't delete it. Update its condition to also match "Default channel group exactly matches AI Assistant." You'll catch sources Google's list misses, and you keep your historical view. Create a comparison: AI Assistant vs Organic Search, last 30 days. Look at engagement and conversions, not just sessions. Early reports across the industry suggest AI referral traffic is small but converts differently. Verify on your own data, not industry chatter. Your assignment: Screenshot your AI Assistant channel — sessions, engaged sessions, conversions, even if it's zero — and post it in the comments with your site type. Zero is data. We're building a baseline across this community: who's getting AI traffic, what kind of sites, from which assistants. In three months we compare. That's how we generate the evidence everyone on LinkedIn keeps saying doesn't exist.