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AI receptionist

The AI receptionist: a complete guide for 2026

An AI receptionist answers the phone, books appointments and puts calls through when nobody else can get to them. Here is what it actually does over a working day, where its limits are, what it costs – and seven questions to ask before you pick a provider.

ByKjell Rune Monsø7 min read
Seen through a glass partition: a woman with short dark hair, a navy cardigan and a headset talks and writes in an appointment book behind a pale reception desk, while an older man in a grey wool coat waits at the desk in low morning light from the right.

It is 11:40. The receptionist has a patient at the desk, a colleague waiting for a signature and three calls in the queue. One of them is a new customer. They wait a minute, hang up and call someone else.

That is the problem an AI receptionist is built for. Not to replace the person at the desk, but to make sure the phone gets answered when they can't.

What an AI receptionist is – and what it isn't

An AI receptionist is a voice agent that answers the phone on your behalf in natural speech. It understands what the caller wants, answers what it knows the answer to, books appointments in your calendar and puts the call through to the right person when the matter needs a human.

It is not a phone menu. Nobody has to press one for bookings and two for invoices. Callers say what they want in their own words, and the agent asks follow-up questions when something is unclear.

Nor is it a chatbot with a voice bolted on. Phone calls have problems of their own: people talk over each other, the line strips out parts of the voice, and numbers are easily misheard. An agent that answers your number has to be built and tested for exactly that.

A working day on the phone

This is what an ordinary Tuesday can look like:

  • 07:52 – Someone calls before you open to ask about opening hours. The agent answers, and the call is over in twenty seconds.
  • 09:15 – A regular customer wants to move their appointment. The agent finds a free slot in the calendar, rebooks and sends a confirmation by text.
  • 11:40 – Three calls at once. The agent takes all three, so nobody ends up in a queue.
  • 14:05 – A customer is unhappy about an invoice. The agent recognises this as a matter for a person, takes the details and puts the call through to the finance lead – with a summary, so the customer doesn't have to repeat themselves.
  • 21:10 – A call after closing. The agent takes the request, judges by your rules whether it is urgent, and leaves a summary waiting for you the next morning.

None of this is unusual. What is unusual is that every call gets answered.

How it is connected

The most common setup is call forwarding on the number you already have. You decide when the agent takes over:

  1. When unanswered – the phone rings with you first as usual, and the agent answers if nobody picks up.
  2. When busy – when every line is taken, the next call goes to the agent instead of to a queue.
  3. Outside opening hours – evenings, weekends and lunch.

Your subscription and operator stay the same, and you can switch the forwarding off at any time. If you want the agent to answer your main number first and route calls onward, that works too, but most start with unanswered calls and out-of-hours.

Which calls would an AI receptionist take for you?

Fifteen minutes going through your most common calls, with an honest view of which an agent can handle – and which belong with a person.

Book Meeting (opens in a new window)+47 24 12 66 30

15 minutes · no obligation · pick your own time

Where the limits are

An AI receptionist shouldn't do everything, and a good setup is clear about what it leaves alone.

  • Judgements that need professional knowledge. At a clinic, the agent can book an appointment and take a prescription renewal, but it should not assess symptoms. It should know when to put the call through, and to whom.
  • Calls where the relationship is the point. A long-standing customer who wants to cancel, a complaint that has escalated, a call about trust. A person should take those, and quickly.
  • Questions it has no answer to. The agent answers from what you have given it. If it doesn't know, it should say so and offer a call back – not guess.

How the handover to a person should work deserves its own walkthrough. We cover it in designing escalation from voice agent to human.

What it costs

Most providers charge a monthly fee plus a price per call minute. At Threll, Start is NOK 699 a month plus NOK 4 a minute, Plus is NOK 2,499 with 500 minutes included, and Premium is NOK 3,999 with 2,000 minutes. If you set it up yourself there is no setup fee, and monthly plans have no lock-in. Current prices are on the pricing page.

To work out your own volume you need two numbers: how many calls come in per month, and how long they last on average. Reception calls are often short – a booking or a question about opening hours takes one to three minutes. A two-minute call costs NOK 8 on Start, and the per-minute price is lower on the larger plans.

Seven questions to ask your provider

  1. How does it sound in your language – on the phone? Ask for a test number to call, ideally from a mobile with poor reception. A demo through a good microphone says little about how it sounds on an ordinary phone line.
  2. Where are calls processed and stored? Ask for the country, not just “in the EU”, and whether you get a data processing agreement.
  3. Who decides how long recordings and transcripts are kept? It should be you, and you should be able to delete them.
  4. Does the agent say it is an AI? The EU AI Act requires that people talking to an AI system are told so, and the obligation in Article 50 has applied since 2 August 2026. We explain it in voice agents must disclose they are AI. The agent should say it itself, early in the call.
  5. How does it put calls through? To which number, with what summary, and what happens if nobody answers there?
  6. Can it book in our calendar? Ask which calendars and systems are supported out of the box, and what a custom integration costs.
  7. How do we get out? Can we switch off the forwarding ourselves, and do we keep the log and transcripts if we leave?

Get started in an afternoon

It doesn't need to be a project. With Threll you create the account yourself and choose the number, opening hours and what the agent should answer – that takes about ten minutes. If it needs to know a lot about your business, allow another half hour to give it material. Start with forwarding unanswered calls, listen to the first calls and adjust.

Read more on the AI receptionist page.

Frequently asked questions

Yes, and they should. The agent says it is an AI assistant at the start of the call, which the EU AI Act also requires. Whether callers are satisfied rarely depends on it being an AI, but on whether they get help with what they called about and reach a person quickly when they need one.

No. The agent is connected as call forwarding on the number you already have – when unanswered, when busy or outside opening hours. Your subscription and operator stay as they are, and you can switch the forwarding off at any time.

Threll speaks over 70 languages. Norwegian, Swedish and Danish are specially trained on real Nordic voices through Threll Voice Lab, so the agent handles dialects and not just written language read aloud. Still, test it with your own callers: ring in with the accents and background noise that are common for you.

It should say so and offer a call back or put the call through, not guess. The agent answers from the sources you have given it, and the questions it couldn't answer are a good list of what to add to that material.

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