How answering services actually price
The advertised monthly is rarely what you pay, because almost every provider prices on usage. Understanding which model you are on matters more than the headline.
| What | Published price | Where it bites |
|---|---|---|
| Message taking | From £15 a month | Entry price is low; the allowance behind it is not published |
| Message and call transfer | From £16 a month | Transfers are the expensive minutes |
| Virtual assistance and lead capture | From £30 a month | Scope creep — "assistance" is not defined on the page |
| Appointment scheduling | From £30 a month | Whether it books into YOUR calendar or theirs |
| Call diversion / voicemail-to-email / IVR | From £10 a month each | These stack, and each is priced separately |
| Enterprise voice AI | From $30,000 a year | Not a small-business product, whatever the marketing says |
Source: ReceptionHQ published UK pricing and Synthflow published pricing, both read 4 September 2026. "From" prices are the providers' own wording; neither publishes the call allowance behind them.
Two things stand out from reading the actual price lists rather than a comparison article. First, the entry prices are far lower than the market is usually described as being — £15 a month, not £50. Second, and more important, **not one of those "from" prices publishes the call allowance behind it.** That is where the real cost lives, and it is the first question to ask.
The question that then decides it: is your call volume predictable? A per-call or allowance model is fine at forty calls a month and painful at four hundred. An AI agent inverts that — the cost curve flattens as volume rises, which is precisely when a human service gets expensive.
Human or AI — the honest comparison
| Human service | AI agent | |
|---|---|---|
| Cost at low volume | Competitive | Competitive |
| Cost at high volume | Rises with every call | Flattens |
| Availability | Business hours, sometimes 24/7 at a premium | Always, at no extra cost |
| Queueing | Yes, at busy times | Never — every call answered at once |
| Nuance and complaints | **Better** | Worse, and knows it if built properly |
| Knowing your business | A script | Whatever you connect it to |
| Booking into your calendar | Usually manual | Direct, with your rules |
| Transcripts and summaries | Sometimes | Every call |
Where a human service genuinely wins: complaints, distressed callers, anything where the caller needs to feel heard, and businesses whose first conversation is the sale. I would not put an agent in front of any of those, and a supplier who would is selling rather than advising.
Where an agent wins: volume, out of hours, repetitive qualifying, and anything that ends in a booking. Most businesses that get this right end up with both — the agent takes the volume, a person takes what matters.
The question to answer before you buy either
How many calls are you currently missing, and what is one worth?
Almost nobody knows. The phone rings, sometimes nobody picks up, and the number is never written down — so the decision gets made on a feeling rather than on the only figure that matters. Your phone provider can usually tell you missed calls by hour, and your website should be firing a tracked event on every phone tap. Between the two you get a real number in an afternoon.
If you are missing two calls a month, neither option pays for itself and I would tell you so. If you are missing twenty and each is worth a few hundred pounds, it is not a close decision — and at that volume the AI agent is usually the cheaper of the two.
