AI receptionist vs human answering service.
Both answer the phone when you cannot. The difference is what happens next: a message in your inbox, or the job done inside your system.
From £150 a month including VAT
£125 plus VAT for 500 minutes, about 140 to 200 calls. New customers get the first three months free with a 12-month commitment.Note 1: new customer offer terms
What is the difference between an AI receptionist and a call answering service?
A human answering service answers your calls and passes on a message, typically by email or text, and charges per call or per minute. An AI receptionist answers the call and completes the task itself: it books the appointment in your diary, raises the job in your scheduler, captures the enquiry into your CRM, and confirms with the caller before the call ends. The practical differences are task completion versus message taking, every call answered at once versus a queue, and, with Prime Assist, a prepaid bundle of minutes where the ones you do not use roll over to the next month.
The differences that show up in month one.
| Capability | Prime Assist | Human answering service |
|---|---|---|
| Typical outcome of a call | Task completed in your system | Message sent to you to action |
| Pricing model | Prepaid minutes, from £150 a month including VAT | Per call or per minute |
| Cost in your busiest month | Rolled-over minutes are used first; extra minutes are 36p a minute including VAT (30p plus VAT) | Highest bill of the year |
| Simultaneous calls | All answered at once | Queued behind available agents |
| Knowledge of your business | Your full price list, rules and diary | Limited to a call brief |
| Availability | 24/7 as standard | Extended hours, premium for 24/7 |
| Consistency of script | Follows your approved script on every call | Varies by agent and shift |
| Transcript and audit trail | Every call, timestamped | Varies, often summary only |
| Warmth on a difficult call | Escalates to your team | Genuine human empathy |
| Set-up effort | Integration and scripting | Brief and go live |
Message taking is the hidden cost
A message is not an outcome. Someone on your team still has to read it, ring the customer back, find a slot and update the system. Industry convention counts that call as handled, but you have paid for the interruption twice and the customer has waited. Count cost per completed task instead of cost per call and the comparison changes shape.
Ask what happens to the minutes you do not use
Call volume is lumpy: it rises when your marketing works, your busy season arrives or something goes wrong and everyone rings at once. Prime Assist is billed from a prepaid bundle of minutes, and the minutes you do not use in a quiet month roll over to cover a busy one, until the end of your 12-month agreement. Whoever you are comparing, model your worst week rather than your average one, and ask each supplier its rate per minute and what happens to the minutes you do not use (see how UK AI receptionists are billed).
Where the answering service genuinely wins
Two places. First, empathy under pressure: a person who can hear that a caller is upset and change register accordingly. Second, speed of set-up: a good service can be live in days with nothing more than a brief, whereas an AI voice agent needs integration and scripting to be worth having. If you need coverage next Monday, they are the right call.
The combination we recommend
AI on first answer for every call, all day and all night, completing routine work inside your systems, with immediate escalation to your own team for anything sensitive. You might keep a human overflow service for one specific line, such as bereavement or complaints. That is a sensible architecture, not a failure.
The short verdict
If most of your calls are routine and you have a system worth writing into, an AI voice agent completes the routine work itself, and with Prime Assist the minutes you do not use roll over to cover your busier months. If most of your calls need a human heart in the first five seconds, or you need cover by Friday, use a human service and revisit this later. See how this plays out for dental practices, veterinary practices, clinics and aesthetic clinics.
Questions buyers actually ask.
Ask us something elseIs an AI receptionist cheaper than an answering service?
It depends on your volume and on what each call has to achieve. Prime Assist starts at 500 minutes a month for £150 including VAT (£125 plus VAT), and completes the task rather than taking a message. At very low call volumes a pay-per-call service can be cheaper. Compare on cost per completed task, including the internal time spent actioning messages.
Can I use both?
Yes. One sensible split is AI on all first answers with a human service kept for one sensitive line, or as an overflow for a specific hour.
Does the answering service not know my business better?
It knows your brief. An AI receptionist is configured against your actual price list, availability, rules and systems, which is why it can complete a booking rather than promise a callback.
What happens when the AI does not understand a caller?
It escalates. Defined triggers route the call to a named human with the transcript, rather than looping the caller or guessing.
Will callers realise it is not a person?
They will, because it tells them. Prime Assist says it is an AI at the start of every call and never claims otherwise. What the caller then judges is whether their problem got solved.
Is a virtual receptionist the same as an AI receptionist?
Not always. In the UK a virtual receptionist often means a person at an outsourced answering service who answers your calls remotely and passes on a message. NHS England’s advice to GP practices uses virtual (AI) receptionist for the automated kind. An AI receptionist answers the call, completes the task in your own system and hands anything else to your team.
Page last updated . Every figure and claim on it is on our facts page.
Three ways to test us. Only one of them involves talking to a human.
Buying voice AI on a slide deck is how people end up with something that fails on the first awkward caller. So we made the product itself easy to try before you commit to anything.
Hear it for yourself, right now
Ring the line, choose a scenario, for example a dental practice or a trades business, and talk to Prime Assist the way one of your callers would. Ask it to book you in, then try to catch it out. No form and no email address.
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Two questions show the calls you miss today next to the same calls with Prime Assist, where every call is answered at once. Add your own figures to see what they are worth, what answering them would cost from £150 a month including VAT, and how many of your bookings that price equals.
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Watch it handle your calls
Bring the three calls that waste the most of your team’s day. We run them live, in your sector’s language, and tell you honestly which ones we would not take. One short form to book.
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Do all three, in that order, and it takes a little over half an hour in total. We would rather you tested the product than read our claims about it.
- DCB0129 safety case
- UK or EU processing region
- First three months free for new customers, with a 12-month commitmentNote 1: new customer offer terms
Let AI answer the phone, so your team can answer the person in front of them.
Send us a month of answering service invoices and call logs. We will do the arithmetic with you.
Free proof of concept on one call type before you sign, and new customers get the first three months free with a 12-month commitment.
HEAR IT FIRST
Call +44 20 3747 7785 and put Prime Assist through its paces before you book anything.
Notes
- New customer offer: 12 months for the price of 9. When you sign, you commit to all 12 months, starting on the day you go live. Months 1 to 3 are free, then you pay your bundle price each month for months 4 to 12, from £150 including VAT (£125 plus VAT), with the price before VAT fixed for your 12 months. On 500 minutes, the bundle for your 12 months costs £1,350 including VAT (£1,125 plus VAT), plus any extra minutes, at 36p a minute including VAT (30p plus VAT) in every month, free months included. For new customers, switchers included, once per customer. A new customer is a practice or business that has not used Prime Assist in the 24 months before it signs. Switching? We do the switch, and a notice period of up to three months runs alongside your free months. Full terms on our pricing page. Back to text, note 1, mention 1Back to text (2), note 1, mention 2
- Prime Assist column as at 23 October 2026; answering service column July 2026. Back to text, note 2