Number of users for billing

How is the number of users counted for billing on the pro or enterprise version?
Is it the number of registered user accounts?
Or the number of users who actually used / login Metabase?
Or the number of concurrent users?

Hi there! It depends on versions. Please email sales to get more details about this

How about the pro version?

By emailing sales, do you mean using the below form?

@xxx123 The Pro (and Starter) plan is currently based on unique enabled users the past month. Meaning the users enabled in Admin > People.
The Enterprise plan has contracts, so conditions varies. Contact sales