Billing types
The billing model matters more than the sticker price. Five models cover most of the market.
Per minute
You pay for talk time. Cheap when most calls are short; costly when calls run long.
13 products
Per call
Every call costs the same, so a 10-minute call costs what a 1-minute call does. Check whether spam and very short calls are free.
3 products
Per unique caller
Each caller counts once a month, however often they ring. Best when many callers repeat.
1 products
Flat or "unlimited"
One price. Read the fair-use clause: some "unlimited" plans state a call cap.
2 products
Phone seat plus AI
A phone-system licence per user plus the AI. Only makes sense if you want that phone system anyway.
4 products
Per conversation
A conversation can be a call, a chat or an email, depending on the vendor.
2 products