What Does an AI Receptionist Actually Cost? A Plain-English Pricing Guide (2026)

Ask three AI receptionist companies what they charge and you'll get three answers that don't compare to each other. One quotes a price per minute. One quotes a monthly plan with a minute allowance bolted on. One won't give you a number until you've sat through a demo. None of it tells you the thing you actually want to know, which is what you'll pay at the end of the month for a phone line that answers your calls.

I'll give you that number, or at least how to work it out for your own business. At ApexAI we build AI receptionists for clinics, physios, MOT centres, trades and care homes, so I price these things for a living and I've watched plenty of owners get burned by a headline rate that quietly tripled. The short version: per-minute pricing looks cheap and usually isn't, and the right way to budget is to ignore the rate and count your minutes.

The two pricing models, and why one of them misleads you

Almost every AI receptionist sits on one of two pricing models.

The first is pay per minute. You're billed for the time the AI spends on calls, and the rate looks tiny. You'll see numbers like a few pence a minute thrown around. Vapi advertises roughly a 4p/min platform fee and Retell about the same, based on a 2026 per-minute breakdown by Ringlyn (their figures are in dollars; I've converted to sterling throughout). At those rates a receptionist sounds almost free. It isn't, and I'll explain why in a second.

The second is all-inclusive, where you pay a monthly fee that bundles the voice, the phone number, the booking integration and a set number of minutes. Synthflow's engine runs around 7p/min on this model per the same data, and all-in costs land higher per minute but with far fewer surprises. You trade a slightly higher sticker for knowing what the bill will be.

Here's the part the per-minute crowd doesn't lead with. The advertised rate is the platform fee, the orchestration layer only. It doesn't include the speech-to-text that turns the caller's words into text, the language model that decides what to say, or the text-to-speech that says it back in a natural voice. On the build-it-yourself platforms you pay for each of those separately. Stack them up and the real cost climbs fast. The same breakdowns that quote around 4p as a base rate put the realistic all-in figure at roughly 8p to 11p a minute on a basic setup, and 19p to 25p a minute once you switch on a premium voice and a top-tier model like Claude (Ringlyn, Famulor). So the "few pence a minute" line can be six times off by the time a real call ends.

The lesson isn't that one model is a scam. It's that a per-minute rate on its own is meaningless. You need the all-in rate, and then you need to know how many minutes you'll actually use.

A worked example: a clinic phone line for a month

Let's price something real. Say you run a busy physio clinic and your front desk takes around 1,500 minutes of calls a month: bookings, reschedules, "are you open Saturday", the lot. That's a reasonable mid-size load.

Retell quotes around 5p a minute for an AI receptionist, and Retell's own figures put 1,500 minutes a month at about £950 a year (they publish it as $1,260), or roughly £80 a month. That's a clean, honest anchor, and it's the number I'd hold every other quote against.

Now run the same 1,500 minutes through a premium build-it-yourself stack at around 19p a minute and you get about £285 a month, more than three times the bill for the same volume of calls. Same minutes, same clinic, wildly different cost, and the only difference is which voice and model someone switched on behind the scenes. If a provider quotes you a rate, the very next question is whether that includes the voice and the model, or whether those are extra.

For a smaller operation, a single-room physio or a one-van plumber, your minutes are lower, maybe 300 to 600 a month, and the monthly figure drops to pocket-money territory. For a multi-site clinic or a call centre handling overflow, minutes run into the thousands and the rate you negotiate genuinely matters. That's the whole game: your bill is minutes times rate, and most people obsess over the rate while ignoring the minutes.

The costs nobody puts on the pricing page

The per-minute or monthly fee is the part you see. Here's what tends to hide underneath it.

Telephony. Someone has to carry the call. Getting a phone number, porting your existing one, and paying for the actual call minutes through a carrier is a separate line on some platforms and baked in on others. On the build-it-yourself tools it's usually your problem to sort and your bill to pay.

Premium voices. The cheap setups use cheap voices, and callers can tell. A natural, warm voice, the kind a patient won't hang up on, costs more per minute. Worth it, but it's the upgrade that quietly moves you from the 8p column to the 19p column.

Integrations. A receptionist that can't write into your booking system is just a fancy answerphone. Connecting to your practice management software, your calendar, or your job-management tool is sometimes included, sometimes a setup fee, sometimes a higher tier. Ask.

After-hours volume. This one catches people out in a good way and a bad way. Roughly 47% of customer calls happen outside business hours and 40% of appointments get booked after hours, according to missed-call research compiled by Dialzara. An AI receptionist answers all of those, which is the point, but it also means your minute count, and your bill, will be higher than your daytime call log suggests. Budget for the calls you're currently missing, not just the ones you currently answer. We dug into exactly how many that is in our piece on the real cost of missed calls.

Per-minute or flat fee: which is right for you?

If your call volume is low and predictable, per-minute can work out cheapest. You only pay for what you use, and a quiet month is a cheap month. The risk is a busy month, a marketing push, or a flu season that sends your minutes and your bill through the roof with no warning.

If you want to know your number, the thing most owners I talk to actually want, a flat monthly fee per location wins. You can put it in the budget, forget about it, and never get a nasty surprise because a bank holiday weekend went mad. This is the model we lean towards at ApexAI, priced per location rather than per minute, precisely because "how much will this cost me" should have one answer and not a spreadsheet. A clinic owner shouldn't need to forecast call-minute demand to know their monthly outgoings.

Neither is morally superior. Per-minute suits low, steady, tech-comfortable users who'll watch the meter. Flat-fee suits everyone who'd rather run their business than audit a usage dashboard.

Is it actually worth it?

Here's the comparison that matters. A part-time receptionist in the UK, even at minimum wage for a few hours a day, runs into the thousands of pounds a year once you add on the cost of them being off sick, on lunch, or simply gone by 5pm. The AI doesn't take lunch, doesn't leave at 5, and doesn't miss the call that comes in at 9pm on a Sunday. And 85% of callers who don't get through the first time never ring back, they ring a competitor instead (Dialzara).

So the real question isn't "can I afford an AI receptionist." For most appointment-driven businesses it's cheaper than the human it supplements. The question is "how many bookings am I currently losing to the phone ringing out", and for a clinic or a garage the answer to that is almost always bigger than the cost of fixing it. If you're weighing your options, our comparison of AI receptionists, answering services and human front desks breaks down which one fits which business.

Price it on your own minutes. Demand the all-in rate. Check what's hidden. And if a quote sounds too cheap to be true, ask what's not in it, because something always isn't.

Frequently asked questions

How much does an AI receptionist cost per month in the UK? For a mid-size clinic taking around 1,500 minutes of calls a month, expect somewhere around £80 to £300 a month depending on the voice quality, the model and what's bundled in. Low-volume businesses pay far less. The figure that matters is the all-in monthly cost for your call volume, not the headline per-minute rate.

Is per-minute or flat-fee pricing better? Per-minute can be cheaper if your call volume is low and steady, because you only pay for what you use. Flat-fee per location is better if you want a predictable bill that won't spike during a busy month. Most appointment-driven businesses prefer the predictability of a flat fee.

Why is the per-minute rate I was quoted so low? Because it's usually just the platform fee, not the full cost. The voice, the language model and the telephony are often charged separately. Always ask for the all-in rate with the voice and model included.

Is an AI receptionist cheaper than hiring a receptionist? For most clinics, garages and trades businesses, yes. Even a part-time human costs thousands of pounds a year and isn't there evenings, weekends or during sickness. An AI receptionist answers every call around the clock for a fraction of that.

What hidden costs should I watch for? Telephony and call carriage, premium voices, integration or setup fees, and higher minute usage once the AI starts answering the after-hours calls you currently miss. Ask any provider to spell all four out before you sign.

ApexAI builds AI receptionists and front-desk agents for clinics, physios, MOT centres, trades, care homes and call centres. Want your real number? Contact us with your monthly call volume and we'll price it flat, per location, with nothing hidden underneath.

What does an AI receptionist actually cost?