The widget, six weeks in
What people actually ask a brain that is embedded on somebody else's website.
The widget is one script tag and a chat window over somebody's page. The visitor does not sign in, has no account, and did not come to the site to use a chat window.
That last part turned out to shape everything. A visitor with no account asks differently from a member: shorter, blunter, and almost always about the page they are already on. They do not explore the brain; they want one answer and then they leave.
Two consequences
The owner pays. There is no account behind a visitor to charge, so those conversations are billed to whoever installed the widget. That is not a pricing detail — it changes who the feature is for, and it means a widget left on a popular page is a bill.
A refusal costs more here. A member who gets "I don't know" tries again in different words. A visitor closes the window. The answer to that is not a chattier brain; it is a brain whose owner has fed it the questions their own visitors actually arrive with.