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AI receptionist or answering service: which one you actually need

Two products, sold to the same small business, doing different jobs. Here is how to tell which one fits, and where each falls down.

6 minute read · updated 19 September 2026

What an answering service actually sells you

A human answering service is a room of people who pick up your line when you cannot, take a message, and send it on. That is the product. They are good at the thing humans are good at: an upset customer, an unusual request, a caller who is hard to understand.

They are less good at knowing your business. The person answering has a script and a screen with your name on it. They will not know that you do not do same-day work on Fridays, or that a fifty gallon swap is forty-eight fifty installed, unless someone typed that in and the person reads it in time.

  • Usually billed per call or per minute, often with a monthly minimum.
  • A message, not an outcome: you still call the person back.
  • Coverage depends on their roster, and holidays cost more.
  • They will not call anyone on your behalf.

What an AI receptionist sells you

An AI receptionist answers every call instantly, at any hour, for a flat monthly fee. The good ones hold a real conversation rather than reading a menu, and they can be told everything about your business in advance because they never forget it.

The weak ones are a voice in front of a form. They screen the caller, capture a name and a number, and hand you the same message an answering service would, minus the human judgement. That is the version of this product most people have tried, and it is why the category has a reputation problem.

  • Flat monthly cost with minutes included, not per call.
  • Answers at 2am and at 2pm the same way.
  • Knows your prices and rules if you brief it properly.
  • Never gets flustered, and never has a bad day.

The question that actually separates them

Ask this: after the call, what has changed?

With an answering service, you have a message. With most AI receptionists, you have a slightly better message. What you want is a call that is finished: the customer knows the price, the appointment window is set, and you have the details in writing without ringing anyone back.

The second question is whether it can make calls as well as take them. Half the work of running a small business is on the phone in the other direction: chasing the supplier, confirming the booking, calling the customer back when the part lands. A product that only answers leaves that with you.

What it costs, honestly

Human answering services typically charge per call or per minute, with a monthly minimum that often lands between $50 and $300 depending on volume. Busy months cost more, which is the opposite of what you want when the phone is busy.

AI receptionists are usually a flat plan. CosVoice is $29 a month with 60 minutes of calls, $69 with 200, $149 with 600, and 25 cents a minute beyond that. A 40-second call costs about 20 cents of your minutes. You can try it for $3 once, with 10 minutes of calls to use over 14 days.

Questions to ask before you sign

Whichever way you go, these separate the real products from the demos.

  • Can it quote from my price list, or only take a message?
  • Can it call people for me, or only answer?
  • What happens at 9pm on a Sunday?
  • Do I get the full transcript, or a summary someone wrote?
  • Does it say it is an AI when asked?
  • Can it take a card number? (The right answer is no.)
  • What happens to my call history if I leave?

Where each one wins

Take the human service if your calls are emotionally difficult, if your callers frequently need to be soothed rather than served, or if you are in a field where a script will not survive contact with the caller.

Take the AI line if most of your calls are the same twenty questions, if you lose work to voicemail, if you need the phone covered outside working hours, or if you want the calls you make handled too. In practice most small businesses are firmly in the second group and have been paying for the first.

Common questions

Can I use both?

Yes, and some businesses do: the AI line answers everything, and complex calls are transferred to a person. On CosVoice the line can hold and ring your mobile when a caller needs you.

Will callers know it is AI?

It introduces itself as your assistant and says it is an AI whenever anyone asks. People are noticeably more helpful when they know.

What happens if it does not know the answer?

A good line says so, takes the details, and hands it to you rather than guessing at a price or a promise.

Try it on one real call.

A number in your area code, working from the first call. About a minute.

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Read next: What an AI receptionist does here · AI answering service · What it costs

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