|Chat API||Business API|
Ban in exceptional cases. First of all, a drop in the rating of the number or a restriction in the use of individual template messages.
It does not depend on the local connection of the phone.
Automatic ability to add and delete contacts.
A business account can receive a verified icon of the Official Business Account (green check mark), for this you need to submit an application to Facebook.
High scalability: by default, 10 messages per second. As the number rating increases, the number of messages sent per second will increase.
There is no such need