Hello Saksham,
In that case you would know who your users are.
you can have either User-based pricing or Capacity pricing. you would need evaluate and decide on which pricing model that best fits your requirement.
Note:
When it comes Embedding.
with user-based pricing - you can have embedding for registered user only
with capacity pricing - you may have either embedding for registered user or Anonymous as pricing is based in session.
For more details on pricing see the recent post
Hope this helps.
Cheers,
Deep