Smith.ai sells two different products and the difference is expensive to miss: an AI receptionist and a human virtual receptionist service, on separate pages with entirely separate pricing. This listing is the AI product.
Every AI feature it offers, scheduling, lead qualification, call routing, recording, transcription and native integrations, is on every plan including the free one, which is capped at a stated number of live calls a month and then charges per call. It is also the only vendor here with real human backup: its own North America based receptionists are reachable through a Live Agent Network as a per-call add-on, though that add-on is not priced on the page.