Curated by Matt Perry

CTO

27 March 2026

The Short Answer

Here is what UK businesses typically pay for an AI receptionist in 2026:

• Off-the-shelf platforms: £30 to £150 per month
• Custom-built AI receptionist: £2,000 to £4,000 setup, plus £100 to £300 per month
• Traditional human answering service: £50 to £200 per month (limited hours, per-minute charges)

The right choice depends on your call volume, how complex your calls are, and whether you need the AI to take actions like booking appointments or checking availability.

Off-the-Shelf AI Receptionist Platforms

These are ready-made services where you sign up, configure some settings, and forward your phone number. Setup takes minutes rather than weeks.

What you pay

• Basic plans: £30 to £60 per month. Covers greeting, message taking, and simple call routing. Usually limited to 50 to 100 calls per month
• Mid-tier plans: £60 to £100 per month. Adds appointment booking, FAQ answering, and CRM integration. Typically 100 to 300 calls per month
• Premium plans: £100 to £150 per month. Unlimited calls, advanced routing, analytics dashboards, and priority support

Watch out for

Many platforms charge per minute or per call above your plan limit. A busy month can push your bill well past the advertised price. Always check the overage rates before signing up.

Some platforms also charge extra for UK phone numbers or call recording. These should be included, not add-ons.

Best for

Businesses with straightforward call handling needs: message taking, basic appointment booking, and call routing. If your callers mostly ask the same five to ten questions, an off-the-shelf platform handles that well.

Custom-Built AI Receptionists

A custom AI receptionist is built specifically for your business by an AI automation agency. It knows your services, pricing, availability rules, and connects directly to your existing systems.

What you pay

• Setup: £2,000 to £4,000 depending on complexity. A simple call handler with calendar integration sits at the lower end. A multi-step triage system with CRM integration, custom logic, and multiple departments sits at the higher end
• Monthly running costs: £100 to £300 per month. This covers hosting, telephony, AI model usage, and maintenance. Unlike off-the-shelf plans, there are no per-call or per-minute charges

What you get for the higher price

Custom builds handle scenarios that platforms cannot:

• Checking live availability across multiple team members before booking
• Quoting prices based on specific criteria like job type, location, or urgency
• Following a detailed triage process, such as medical symptom assessment or legal intake
• Updating your CRM, ticketing system, or property management software in real time
• Handling multiple languages or regional accents with fine-tuned models

Read our full guide on AI voice agents for a deeper look at what custom solutions can do.

Best for

Businesses receiving 30 or more calls per day, or businesses with complex call handling that off-the-shelf tools cannot cover. The higher upfront cost pays back quickly when you remove per-minute charges and gain the ability to handle every call without human intervention.

Traditional Answering Services for Comparison

Before AI receptionists, the main alternative to hiring staff was a human answering service. These still exist and serve a purpose, but the economics have shifted.

• Basic plans: £50 to £100 per month. Covers business hours only, with per-minute charges after a small included allowance (often just 30 minutes)
• Full service: £150 to £300 per month. Extended hours, dedicated operators, and more included minutes
• 24/7 coverage: £300 to £500 per month or more. Round-the-clock human receptionists with full scripting

The main advantage of human services is handling genuinely unusual or sensitive calls. The main disadvantage is cost at scale. A busy small business can easily spend £400 or more per month on a human service, while an AI receptionist handles the same volume for a fraction of the price.

What Drives the Cost Up (or Down)

Several factors affect what you will actually pay:

Call volume

Off-the-shelf platforms get expensive as call volume rises because of per-call charges. Custom builds have flat monthly costs regardless of volume. If you handle fewer than 20 calls per day, a platform is probably cheaper. Above that, custom starts to make more sense.

Integration complexity

Connecting to a Google Calendar is simple and cheap. Connecting to a bespoke property management system or an NHS booking platform takes more development time and raises the setup cost.

Number of call flows

A single greeting with message taking is the cheapest to build. Multiple departments, different scripts for different times of day, and conditional routing based on caller history all add complexity.

Voice quality requirements

Standard text-to-speech voices are included in most platforms. Premium voices that sound more natural, or custom voice cloning, cost extra. For most businesses, standard voices in 2026 are good enough that callers do not notice.

Compliance needs

Healthcare, legal, and financial services often need GDPR-compliant call recording, data residency in the UK, and audit trails. These requirements add to both platform and custom costs.

How to Work Out Your Return on Investment

The real question is not what an AI receptionist costs, but what missed calls cost you. Here is a simple way to estimate:

1. Count your missed calls. Check your phone system logs for the last month. Most small businesses miss 20% to 40% of incoming calls
2. Estimate how many are potential customers. Not every missed call is a sale, but for service businesses, roughly half of missed calls are new enquiries
3. Multiply by your average job value. If you are a plumber averaging £200 per job and you miss 40 calls per month, that is roughly 20 lost enquiries worth up to £4,000
4. Compare to the AI receptionist cost. Even a custom build at £300 per month pays for itself if it captures just two extra jobs

For a more detailed look at calculating AI returns, see our guide on AI automation ROI.

Which Option Is Right for Your Business?

Here is a quick decision guide:

Choose an off-the-shelf platform if:

• You receive fewer than 20 calls per day
• Your call handling is straightforward (greet, take message, book appointment)
• You do not need deep integration with existing business systems
• You want to start today with minimal setup

Choose a custom-built AI receptionist if:

• You receive 30 or more calls per day
• Calls require checking live data (availability, pricing, stock levels)
• You need integration with specific business software
• You operate in a regulated industry with compliance requirements
• You want to eliminate per-call charges entirely

Keep a human answering service if:

• Your calls are highly sensitive or emotionally complex (bereavement services, crisis lines)
• You receive very few calls and the cost is negligible
• Your callers strongly prefer speaking to a human and you have confirmed this through feedback

Getting Started

If you are ready to explore AI receptionist options for your business:

1. Audit your current call handling. How many calls do you get? How many do you miss? What do callers typically ask?
2. Try a platform first if you are unsure. Most offer free trials. This gives you real data on whether AI call handling works for your callers
3. Talk to a specialist if your needs are complex. We build custom AI phone assistants for UK businesses and can tell you honestly whether off-the-shelf or custom is the better fit

Want to find out what an AI receptionist would cost for your specific situation? Book an intro call and we will give you a straight answer, no sales pitch.

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