How much company data goes to AI services each month?
You can measure it at the network level, per service and per host, and that number is more useful than it sounds. Volume does not tell you what the data was, but it separates light use, such as short questions and answers, from heavy use, such as whole documents, spreadsheets, code repositories or audio being uploaded. A sudden jump from one host, or a steady stream from a server that should not talk to AI services at all, is a reason to ask. Track it monthly, per business function, next to your list of approved services: rising use of an approved tool is good news; rising use of an unapproved one is a policy gap. Your AI provider's admin console can add per-user detail for business accounts. From the Pro plan, NetSenX shows which hosts reach which AI services, including local model runtimes, and how much data goes to each over time. It never reads the content, so it cannot tell you whether the data was confidential; that judgement comes from the people who own it.
This answer also appears, with more context, here: AI use and AI security