AI · 7 min read

Before You Buy an AI Phone Service, Call Your Own Business

By Steve · updated October 2026

Every vendor will run you a demo call. It will go beautifully, because they wrote both sides of it. There is a different test, it takes two minutes, and most of the services I have been asked to review fail it. Before I get to the test, there is a number you need, and getting it costs you nothing.

The number that makes the decision for you

Pull your phone records for the last full month and count the calls you did not answer and never returned.

Then multiply by what one customer is worth. That is the size of the hole you are considering filling, and it is usually larger than anyone expects, because missed calls do not feel like anything. Nothing arrives to remind you.

With that number in hand, pricing becomes readable instead of intimidating.

How the pricing really works

Three layers, and vendors present them in whichever order makes the total look smallest.

Setup. The real work: writing what the agent knows, connecting your number and your calendar, testing against your actual calls. Quoted anywhere from a few hundred to a few thousand depending on how much of your business it has to understand.

Platform. A monthly fee for the service existing. Usually the small number they lead with.

Usage. Per minute of conversation. This is the line that grows with success, and the one that is easiest to leave vague in a proposal.

Ask for the per-minute rate and the overage rate in writing before anything else. A vendor who will not put it in writing has told you something.

What it should be doing on those calls

Answering the repeat questions, taking a real booking into your real calendar, working out whether this is a customer or a sales call, and getting anything unusual to a human quickly.

The booking part is where the value concentrates and where the weak products hide. There is a difference between writing an appointment into your calendar against real availability and collecting a request for you to process later. The second one is a contact form with a voice.

Now the test.

The two-minute test

Call the demo line yourself and ask four things, in this order.

Ask it what the business is called. Models quietly correct unusual business names into common ones, and a service that cannot hold your name will not hold your prices either.

Ask for something the business does not sell. It should say it does not, not improvise.

Ask for a price it should not quote, or a discount. It should decline or hand off, not invent.

Then get irritated and ask for a person. Time how long that takes.

Most services fail at least one of these, and the first one fails far more often than you would expect.

• "What is this business called?"
• "Do you do [something they do not do]?"
• "What's the best price you can do for me?"
• "Just put me through to a person."

What actually separates the good ones

Not the voice quality. Every serious product sounds fine in 2026.

It is whether the thing is governed. A written brief of what it knows, an explicit list of what it must never say, a defined handoff, and a log you can read. Those four turn a demo into something you can put in front of customers.

The failures I get called in to fix are never about the model. They are about a system that was deployed with no limits, quoting prices nobody authorized and promising slots that did not exist, because the setup was treated as a formality.

A sane way to start

Turn it on after hours only, for a month. Your risk is capped at calls that were going to voicemail anyway, and you get a log of what people actually ask at 9pm.

Read that log, tighten the brief, then extend it to overflow during the day. By the time it answers a first-ring call you will have evidence rather than hope.

Frequently asked questions

Can it use my existing phone number?

Yes, in most setups. You choose whether it answers always, only outside hours, or only when nobody picks up within a set number of rings.

What does it cost per month?

The platform fee is usually modest and the usage charge is per minute, so the monthly total tracks your call volume. Ask for a projection at your real volume, not at the sample volume in the proposal.

Will it book appointments correctly?

Only if it reads genuine availability and writes a real booking. Ask to see it create one in a live calendar during the demo, then check the calendar yourself.

What if the caller does not want to talk to an AI?

It should say what it is up front and hand off the moment someone asks. The complaints come from services that hide it and from services that trap people in a loop.