What is Google Analytics 4?
GA4 is Google's website and app analytics system. It records activity as events and organizes reports about traffic sources and actions after a visit.
Page views, registrations and purchases can each be represented by events when tracking is configured for them. Seeing a button on a website does not establish that its use is measured correctly.
Users, sessions and events answer different questions
A user can have multiple sessions, and one session can contain many events. Do not relabel an event count as a count of people.
Key events identify actions considered important for the site. Their interpretation still depends on event definitions and counting settings. An engaged session also has its own qualification rules; it is not simply any event occurrence.
What can GA4 tell you about AI traffic?
The documented AI Assistant channel groups recognized traffic from services such as ChatGPT and Gemini. Google's AI Overviews and AI Mode traffic is classified within Organic Search under the cited rules.
GA4 does not thereby reveal the question a reader asked an AI service. An answer citing a website does not create a site visit by itself. Missing referral information also leaves gaps in what can be classified.
The AI referral traffic guide addresses recorded visits. SEO Pulse's product page (in Traditional Chinese) describes the reporting project and its availability limits; a translated explanation is not a claim that every account or output language has been verified.
Sources and scope
Source-language entry records a source check on 2026-09-28. The default channel documentation, including AI Assistant and Organic Search, was also reopened on 2026-10-26. This is a documentation check, not an audit of a connected property.