Google AI Mode Based On Your Google Activity
Accessing the Google AI Mode home screen can be done quickly by visiting google.com/ai.
A small disclaimer under the search box may appear, stating
Based on your Google activity. However, this disclaimer only seems to appear when signed into a Google account, as Google can only access past activity history when a user is logged in.
Google AI Mode utilizes search history and conversation history, likely to continue chats from where they were left off.
A default suggestion on the AI Mode page is also
Based on your Google activity.
Note: The author is currently offline for Simchas Torah.
Author's summary: Google AI Mode uses user activity.