Claude Traffic Index.

Claude referral traffic is smaller than ChatGPT or Gemini for most sites, but it is growing and tends to be high-intent. Across the Trakkr panel of 1,429 GA4 properties that receive Claude traffic, Claude is an increasingly meaningful referral source, especially for technical, B2B, and research-oriented content.

Yes. As Anthropic has expanded Claude's web search and citation features, its referral traffic has trended upward, albeit from a smaller base than ChatGPT. The Trakkr Claude Traffic Index tracks the trajectory daily so you can separate genuine growth from week-to-week noise.

Claude traffic is measured through Google Analytics 4 by filtering sessions where the source contains "claude.ai". Trakkr aggregates this first-party data from anonymized GA4 properties and normalizes it to the highest-traffic day (= 100%) to show relative trends without exposing absolute numbers.

Claude has a smaller user base than ChatGPT and added web browsing with citations more recently, so fewer answers contain outbound links. As a result its referral panel is smaller and its day-to-day numbers are more volatile, but its growth rate has been strong.

Technology, finance, and other research-heavy verticals tend to see the most Claude referral traffic, reflecting Claude's strength with technical and professional audiences. The breakdown above shows current 30-day trends across every tracked vertical with enough data to report.

Connect your Google Analytics property to Trakkr to see exactly how much traffic Claude, ChatGPT, Gemini, Perplexity, and other AI platforms send to your site. Trakkr automatically filters and categorizes AI referral traffic and benchmarks you against industry averages.