The core difference: message vs booking
A human answering service (Moneypenny, AllDayPA, AnswerConnect) answers the call in your name and takes a message. That's genuinely useful, a real person, a polite greeting, a note in your inbox. But you still have to ring the customer back to actually book the job, by which time they may have called someone else.
An AI receptionist completes the task on the call: it asks the qualifying questions, books the appointment into your diary or field-service software, and only escalates to you when it's a real emergency. The customer is booked before they hang up.
Cost: per-minute vs flat
Human answering services typically charge per-minute or per-call, with 24/7 cover as an add-on (Moneypenny, for example, prices per-minute plans with 24/7 from around +£35/month). That's predictable at low volume but scales up with every call, and busy seasons cost more exactly when you're busiest.
An AI receptionist is usually a flat monthly fee regardless of call volume. Callsy's trades plan is £600/month, done-for-you. Cheaper 'answer-and-take-a-message' AI bots exist from around £99/month, but most don't book into your field-service tool, which is the part that saves you the call-back.
Side by side
For a UK trade business, the comparison that matters:
- Answers the call: both
- Takes a message: both
- Books the job without you calling back: AI receptionist only
- Writes into Joblogic / Commusoft / Tradify: AI receptionist (Callsy)
- Rings missed callers back automatically: AI receptionist (callback mode)
- 24/7 with no per-minute creep: AI receptionist (flat fee)
- Handles a genuinely complex or emotional call with human judgement: human service
Where a human service still wins
Be honest about this, because it matters for some firms:
- Complex, emotional, or unusual calls where human judgement and warmth beat any script
- Customers who strongly prefer speaking to a person and will hang up on anything automated
- Very low call volume where a per-minute human plan is simply cheaper than a flat fee
What we'd recommend
If your main problem is missed calls turning into lost jobs, calls outside hours, while you're on the tools, during busy spells, an AI receptionist in callback mode addresses exactly that, and books the work into your diary so there's no follow-up to forget.
If your call volume is tiny, or your calls are mostly delicate conversations that need a person, a human answering service may suit you better. Many firms run a hybrid: AI handles the routine booking and call-backs, a human covers the exceptions.
The disclosure point applies either way: under the EU AI Act (from August 2026) and UK PECR, an AI caller must tell the customer it's AI. Callsy builds that in by default.
