Guide · Costs

AI receptionist vs answering service vs voicemail: what each really costs

Voicemail looks free, an answering service looks like a fixed bill, and an AI receptionist looks like software. The real cost of each is the subscription plus the bookings you lose. Here’s how to compare them honestly.

Published July 28, 2026 · Greeta Voice team

The three options at a glance

VoicemailLive answering serviceAI receptionist (Greeta)
Who answersNobody — the caller leaves a message or hangs upHuman operatorsAn AI that identifies itself as your automated assistant
How you payUsually part of your phone planVaries by provider — often a monthly fee, per-minute, or per-call; ask for a written quoteMonthly plan: Complete Solo $139, Growth $299, Pro $499; extra voice minutes $0.30 each
Books into your calendar on the callNoDepends on the service and your setup — askYes — Square or the Greeta calendar, live availability
HoursAlways on, but nobody listens until you doCheck the provider’s hours24/7

Plans and prices change, so check each provider’s current terms. Greeta’s are on the pricing page; Booking, Text, and Voice plans start lower than Complete.

The real-cost worksheet

Real monthly cost = subscription + overages + your time returning calls + bookings lost

Bookings lost = missed calls per week × 4.33 × share who wanted to book × average booking value. Our missed-call cost guide walks through it step by step, and the calculator does the math for you.

Worked example (made-up numbers, not statistics)

Suppose a business misses 10 calls a week, half of those callers wanted to book, and the average booking is worth $60. That’s 10 × 4.33 × 0.50 × $60 ≈ $1,299 a month in bookings at risk. These inputs are examples — use your own.

Against that, a $139 plan pays for itself after 3 bookings a month at $60 each (139 ÷ 60 ≈ 2.3, rounded up). Voicemail “costs” nothing on the invoice but leaves the whole $1,299 exposed; an answering service reduces that only if it can actually book.

Questions to ask any provider

  • What is the billing unit — month, minute, call — and what happens when I go over?
  • Can it book, reschedule, and cancel in my calendar, or only take a message?
  • Which hours and languages are covered?
  • Can calls ring me first and only fall back to the service when I don’t answer?
  • What is the contract length and how do I cancel?

For a side-by-side view, see Greeta vs answering service and Greeta vs voicemail.

Questions to ask before you choose any option

Whatever you’re comparing, the same handful of questions separates a helpful setup from an expensive inbox:

  • Does it book into my real calendar, or only take a message I still have to act on?
  • What happens at 9 pm on a Sunday, or when two calls arrive at once?
  • Which languages can it handle, and what happens with a caller it can’t help?
  • Can a caller still reach a real person when it matters?
  • How does the price change if call volume doubles?

A simple way to decide

If you get only a few calls a week and can reliably return every one the same day, voicemail may be all you need. If calls mostly ask for the same things — book, move, cancel, hours — and you’re often with a customer when they come in, an AI receptionist that books directly removes the callback step entirely. If calls are long, sensitive, or need judgment every time, a human service (or your own team) is still the better fit. Many businesses end up mixing them: Greeta answers when you can’t, and calls can be set up to reach a person when needed.

Try Greeta on a sample business — free.

The demo comes with a sample business, services, and team, plus 30 minutes of test calls. Guided setup is free for a limited time at your first checkout.