People now use ChatGPT, Claude, Gemini, Perplexity and other AI assistants to research products, compare tools, solve problems and discover websites.
When someone clicks a link suggested by one of these assistants, the visit may appear inside Google Analytics 4 as referral traffic.
That means you can already start identifying AI traffic and analyzing how those visitors behave on your website.
Depending on the assistant and how the visit was referred, you may see sources associated with platforms such as:
Not every visit influenced by an AI assistant will necessarily appear as an AI referral.
For example, someone might discover your company through ChatGPT, remember the brand name, and search for it on Google later.
So AI referral traffic should be seen as the observable portion of AI-driven discovery, not a complete measurement of AI influence.
Here’s a quick walkthrough showing where AI referral traffic can appear inside GA4 and how to find it:
Once you know where to look, it becomes much easier to separate AI referrals from your other acquisition sources.
If every referral is grouped together, you lose information about how individual sources perform.
which AI assistants are sending visitors which pages those visitors land on how long they stay whether they continue browsing which sources generate engaged sessions which AI assistants send the most valuable visitors
This becomes particularly useful when several AI assistants are referring traffic to the same website.
For example, visitors arriving from ChatGPT may behave differently from visitors coming from Perplexity.
The number of sessions might be similar, while engagement or landing-page behavior can be completely different.
A relatively small number of highly targeted visits can sometimes be much more interesting than a larger amount of generic referral traffic.
Once you’ve identified your AI referral sources, you can compare them against channels such as:
total users new users sessions engaged sessions average engagement time events conversions landing pages
You can also create a dedicated GA4 exploration or comparison containing only the AI sources you want to monitor.