PRIMARY-SOURCE COMPARISON

Ostra vs Smith.ai

These two products are priced in different units, which makes the headline numbers misleading in both directions. Smith.ai bills per call and staffs real people alongside its AI. Ostra bills per minute and is AI-only. This page compares them on the terms each one actually publishes.

How this was checked. Every Smith.ai figure below was read from Smith.ai’s own public pages on 31 August 2026, not from a review site or a third-party summary. Where we could not verify something, the row says Not verified rather than guessing. Prices change — check the source links before deciding.
 OstraSmith.ai
Pricing unitPer minutePer call
The units differ, so the headline prices are not directly comparable.
Entry plan$129/month, 200 callable minutesStarter: 30 calls, $300/month
Next tierNot verified beyond the published $129 receptionist planBasic: 90 calls, $810/month
Overage$0.25 per additional minute$11.50 per call over the Starter allowance
Who answersAI onlyAI receptionists and live human agents
Smith.ai staffs real people; Ostra does not.
Appointment bookingRecords appointment requests for the business to confirm. Does not promise confirmed calendar booking.Books meetings directly on your calendar, published as a $1.50 per-call add-on
Smith.ai books directly; Ostra records a request. This is a real capability difference.
TransfersNot verifiedStarter includes 1 free transfer destination; Basic includes 2
Annual discountNot verified10% discount for a 12-month subscription
Phone numberOne real local US number includedNot verified
Website includedSame system can build and host the website; sold separately from $29/moNot offered

Which one suits you

Choose Smith.ai if: your calls need a trained human who can handle nuance, you are in a field like legal or medical where that matters, and a smaller number of high-value calls justifies the cost per call.

Choose Ostra if: you take a higher volume of shorter, routine calls — price, availability, location, book me in — and you need them answered while you are working rather than staffed by a person.

How we read this — Ostra’s interpretation, not verified fact

  • Per call versus per minute is the whole comparison. Thirty calls for $300 is $10 a call before overages; whether that beats 200 minutes for $129 depends entirely on how long your calls run and how many you get. Work out your own average call length before comparing the headline prices.
  • Smith.ai books appointments directly onto a calendar. Ostra records a request for you to confirm. If confirmed booking without a human step is the requirement, Smith.ai does something Ostra does not.
  • Smith.ai's human agents are a genuine capability, not marketing. For calls where getting it wrong is expensive, that is worth paying for. For high-volume routine questions, paying per call for a person is the expensive way to answer 'what do you charge'.

What Ostra does not do

  • Ostra records appointment requests for the business to confirm. It does not promise confirmed calendar booking. Smith.ai does book directly.
  • Ostra has no human agents. Every call is answered by AI.
  • Ostra does not publish a tier above the $129/month receptionist plan.
  • Several Smith.ai rows above are marked Not verified because we could not confirm them from its public pages on the date checked — not because they are absent.