Why AI referral traffic is worth watching
People now ask ChatGPT, Perplexity and Claude questions they used to type into Google, and when an answer cites a page, some of them click through. Those visits are small for most sites today, but they tend to arrive on pages that answer a question well, and they are growing month by month. Knowing which assistants send visits, and to which pages, tells you what is already working in AI answers and where to build next.
How it counts
When someone clicks a link inside an AI assistant's answer, Google Analytics records the visit with the assistant's domain as its session source. This tool reads your GA4 sessions by session source and matches each source against the domains of ChatGPT, Perplexity, Claude, Gemini, Copilot, Grok, DeepSeek, Meta AI, You.com, Poe, Phind, Le Chat and NotebookLM. A subdomain counts, so m.perplexity.ai is Perplexity, but a lookalike domain does not. The report shows the total, each assistant's share, the key events those visits brought, a chart of every day, and the landing pages with the assistant that sends each one the most.
What it cannot see
Some AI apps open links without sending a referrer, so those visits land in Direct or Unassigned and nothing can name them. Google's own AI Overviews and AI Mode count as Google organic search in Analytics, so they are not part of this report. When Google Analytics hides rows for privacy, samples the data or groups small rows into "(other)", the report says so, because its numbers are then lower than the real ones.
Your Google data
The tool asks Google for your email address and read-only access to Google Analytics, and nothing else, and Google gives that access for one hour. That access is kept only in an encrypted cookie in your own browser, never on the server, and signing out cancels it at Google straight away. The tool cannot change anything in your Analytics account. Your report keeps the numbers it shows and is deleted 90 days after it was made. The privacy policy has the details.