A demo tells you how it sounds; a test tells you how it behaves
Voice quality matters, but it is only the first thirty seconds of the decision. A receptionist can sound excellent and still give an old price, invent an answer, transfer the wrong caller, or leave you with a message that is missing the callback number. Those are operational failures, not cosmetic ones.
Build the test around the calls that already reach your business. Use your actual hours, service area, pricing language, booking policy, and escalation rules. If you would not trust a new employee after hearing only their greeting, do not hold an AI receptionist to a lower standard.
