In my case, I am creating a real-time translation application, so I am interested in being able to use translations with good accuracy via API. I will be watching with anticipation, including setting up some sort of billing plan.
However, as you are concerned, I can easily imagine that if the API functionality becomes available, it will be used by many different users.
We can assume that server resources will be limited, so some sort of user usage restrictions will need to be imposed at the same time.