How to see how much traffic ChatGPT, Perplexity and Claude send your site

September 25, 2026 · 6 min read

If you run a SaaS or content site, some of your best visitors now arrive after asking an AI assistant a question. Someone asks “what's a good privacy-friendly analytics tool?”, the assistant cites a few sites, and the person clicks. Those visitors tend to arrive with unusually high intent: they've already had their question answered and are looking for the thing that was recommended.

The problem: most analytics setups either lump this traffic into “Referral” next to random blogs, or miss it entirely and file it under “Direct”. Here's how AI traffic actually reaches you and how to measure it.

How AI assistant visits show up

There are three signals you can use:

1. The referrer header. When a browser follows a link from a web app, it usually sends the site it came from. Clicks from Perplexity typically arrive with perplexity.ai, from the ChatGPT web app with chatgpt.com, from Claude with claude.ai, and from Gemini with gemini.google.com.
2. UTM tags. ChatGPT adds utm_source=chatgpt.com to many links it shows, which survives even when the referrer doesn't.
3. Landing pages. AI assistants love citing specific, answer-shaped pages: comparisons, guides and docs. A sudden rise in direct visits to a deep blog post is often AI traffic in disguise.

Why a lot of it looks like “Direct”

Desktop and mobile apps often don't send a referrer at all, and some links open in an in-app browser that strips it. Privacy settings and noreferrer links remove it too. So the numbers you can measure are a floor, not the full picture. That's still very useful: the trend is reliable even if the absolute number is conservative.

Measuring it in GA4 (the manual way)

In GA4 you can build an Exploration with Session source as a dimension and a filter matching a regular expression like this:

chatgpt\.com|openai\.com|perplexity\.ai|claude\.ai|gemini\.google\.com|copilot\.microsoft\.com

Add Key events or revenue as a metric to see whether those visits convert. You'll need to update the list as new assistants appear, and it only covers sessions where GA4 received the referrer or UTM tag.

Measuring it automatically

Cleverpilot groups every visit into a channel as it arrives, and AI assistants is its own channel alongside Search, Social, Email and Referral. It checks both the referrer and the UTM source, so ChatGPT links count even when the referrer is missing. Because Cleverpilot also links payments to visits, you can see what AI visitors are worth, not just how many there are. In our live demo, AI assistants are a small share of visits but one of the top revenue channels.

What to do with the data

• Find the pages AI cites. Filter to the AI assistants channel and look at entry pages. Those are the pages worth keeping accurate, up to date and clearly structured.
• Write answer-shaped content. Comparisons, “how to” guides and pages that state facts plainly (pricing, limits, integrations) are what assistants quote.
• Track conversion, not just visits. A channel that sends 3% of visits but 15% of revenue deserves far more attention than its traffic suggests.

You can start a free trial and have your AI traffic numbers in about two minutes.