From your link I do not see anything about paying from the model, only displaying a model logo in some (but not all) high user high revenue circumstances. For example, the revenue threshold is $20mm/month to display the logo, but only if the external users use the model. If I make an iOS app that earns $20/mm mo and has more than 100m users with this model, do not display the logo, unless the model itself is available to those users.