What an AI Receptionist Actually Costs (and What 'No Setup Fee' Should Mean)

Published 2026-09-14 · AlgoEthos

The direct answer: there is no single price, because vendors bill on four different structures and those structures behave very differently when your call volume moves. Published rates in this market run from roughly $22/month on budget per-minute plans to $2,100/month and up on high-volume plans. The monthly headline is the least useful number on the page. What decides your real cost is the billing unit, what happens when you exceed the included amount, and which capabilities are bundled versus charged per call.

This guide explains the structures, shows where the surprises come from, and gives you a worksheet you can take to any vendor. It is useful whether or not you ever buy from us.

The four ways AI receptionist vendors bill

1. Per minute. You pay a small base fee for a bundle of minutes, then a rate for every minute beyond it. Published budget plans sit around $22–$65/month for 60–250 included minutes, with overage between $0.20 and $0.48 per minute (Plura AI, "AI Receptionist Pricing 2026," updated 2026-09-02). This is the structure that looks cheapest on a pricing page and is the hardest to predict, because you are billed for duration — including the callers who ramble, the ones who ask three questions, and the ones who leave a long voicemail.

2. Per call. You pay for each conversation regardless of length. Smith.ai publishes this model openly, and the distinction matters before you compare anything: these are its human-first, live receptionist plans — Starter at $300/month including 30 calls, then $11.50 per call beyond that; Basic at $810/month including 90 calls at $10.50 over; Pro at $2,100/month including 300 calls at $8.50 over (https://smith.ai/pricing/receptionists, observed 2026-09-12).

Smith.ai prices its AI-first product separately, on a different page and a different billing shape: Free at $0/month for 25 calls, Pro at $150/month for 75 calls, and Enterprise at $500/month for 300 calls (https://smith.ai/pricing/ai-receptionist, observed 2026-09-12). Those AI plans also carry per-call and extra-per-call rates; check the current page for the exact overage figures before relying on them. Do not carry the human plans' overage rates, inclusions or capabilities across to the AI plans — they are different products.

Per-call billing is more predictable than per-minute for long conversations and less predictable for high volumes of short ones.

3. Flat monthly. A fixed fee covers the service up to whatever allowance the contract states. Published entry tiers in this band run roughly $99–$499/month, with growth tiers from $500–$1,500 (secondary source: Plura AI vendor blog — attributed as a vendor-published range, not a primary price page). Predictability is the appeal, but it only holds inside the contracted allowance: ask what the included volume is, what fair-use limits apply, and what happens past them.

4. Hybrid subscription plus overage. A base fee with a per-call or per-minute charge after a threshold — effectively models 1 or 2 wearing a subscription. Base fees are reported from $95 to over $500/month (Plura AI, same source).

A fifth pattern exists at the top: enterprise flat-rate, reported at roughly $1,500–$3,000+/month with custom SLAs and compliance commitments (secondary source: Plura AI vendor blog — a vendor-published range, not a primary price page). As with any flat-rate tier, "flat" means flat within the contracted allowance; ask what volume is included and what happens past it. Most small local businesses never need this tier.

Why the billing unit matters more than the rate

Two vendors can quote you what sounds like the same price and bill you very differently in a busy month. Consider a plumbing company in a cold snap, or a clinic during flu season — the weeks when answering the phone matters most are exactly the weeks your volume spikes.

Hypothetical calculation — illustrative only, not a measured outcome. Assumptions: 400 calls in a spike month; average call length 3 minutes; a per-minute plan with 250 included minutes at $0.48/minute overage; a per-call plan including 30 calls at $11.50/call overage. Per-minute plan: 400 × 3 = 1,200 minutes; 950 minutes over the bundle; 950 × $0.48 = $456 in overage on top of the base fee. Per-call plan: 370 calls over the bundle; 370 × $11.50 = $4,255 in overage on top of the $300 base. Scope note: this uses Smith.ai's smallest human-first live-receptionist plan, chosen deliberately as a fixed reference point for the billing unit — it is not a lowest-cost quote for 400 calls, not the plan anyone would buy for that volume, and not an AI-vs-AI comparison. A larger plan or the separately priced AI product would produce different totals. A flat-rate plan: the base fee does not change within its contracted allowance. Past that allowance, or outside its exclusions, a flat-rate plan bills too. The totals below are not equal service delivered at different billing units — a live-human plan and an AI plan are different products. These are arithmetic on published rates, not observed customer bills. Your own numbers will differ. The point is not which vendor wins — it is that the same spike produces wildly different bills depending only on the billing unit you signed.

Run that arithmetic on your own worst month before you sign anything. If a vendor cannot tell you what your bill looks like at three times your normal volume, that is the answer.

What "no setup fee" should actually mean

"No setup fee" is common in this market, and it is not always the same promise. Smith.ai states "No setup fees" and "No hidden fees" directly on its pricing page (observed 2026-09-12). Our own AI Receptionist is published at $200/month with no setup fee (algoethos.ai/pricing, observed 2026-09-12).

Before you treat a waived setup fee as a saving, ask what setup includes when it is charged:

Configuration of what the assistant says and does — greeting, qualifying questions, how it handles the calls it cannot resolve.
Number provisioning or porting — moving your existing business number, or forwarding to a new one.
Calendar and CRM connection — whether booking writes into the system you already use.
Testing before it answers a real customer — someone calls it, listens, and adjusts.
A revision pass — the first configuration is never the final one.

A waived setup fee is genuinely good when all of that is included in the monthly price. It is not a saving if it means configuration is self-serve and you are the one doing the work, or if those steps reappear as per-call add-ons later.

The costs that are not on the pricing page

Per-call add-ons for things you assumed were included. This is the most common gap, and it is visible in published pricing. Smith.ai lists appointment booking at $1.50 per call, call recording and transcription at $0.25 per call, payment acceptance at $1.00 per call, and CRM integrations with the first free and $0.50 per call for additional ones (smith.ai/pricing, observed 2026-09-12). None of those are hidden — they are published — but they are easy to skip when you are comparing headline monthly numbers. If booking appointments is the entire reason you want an AI receptionist, that per-call charge belongs in your monthly estimate from the start.

Number porting. Moving your existing business number can take days and sometimes carries a fee from the losing carrier. Ask who does the paperwork and what happens to call handling during the transition.

After-hours and weekend coverage. Confirm whether it is included or a separate tier. For most local service businesses this is the main reason to buy, so it should not be an upsell.

Spam and wrong-number calls. If you are billed per call, robocalls can cost you money. Smith.ai publishes "No charge for spam" on its human-first receptionist pricing page (https://smith.ai/pricing/receptionists, observed 2026-09-12). That statement is scoped to that product — do not assume it carries over to its separately priced AI product, or to any other vendor. Ask explicitly how spam is detected, on the specific plan you are buying, and whether you are billed for it.

Contract length and exit. Month-to-month is worth real money if the service does not fit. Smith.ai publishes a 10% discount for a 12-month subscription and a 30-day money-back guarantee on its human-first receptionist pricing page (https://smith.ai/pricing/receptionists, observed 2026-09-12) — a fair trade, as long as you make the choice deliberately. Those terms are scoped to that page and that product; confirm the terms of whichever plan you are actually buying before relying on them. Our own plans are month-to-month (algoethos.ai/pricing, observed 2026-09-12).

Who fixes it when it is wrong. The cheapest plan with no human to call is not cheap. Ask what the support route is, and what the response expectation is when the assistant mishandles a caller.

AI versus live-staffed: why the per-call numbers look so far apart

When you compare quotes you will find services whose per-call cost is an order of magnitude higher than others. Usually that is not a margin difference — it is a different product.

Smith.ai's published Starter plan is $300/month for 30 calls, an effective $10 per call, and the page states the service is "Live-staffed with expert agents 24/7" (smith.ai/pricing, observed 2026-09-12). That price buys a trained human being on your line. An AI-answered call has a fundamentally different cost base, which is why flat AI plans can publish entry tiers in the $99–$499/month range while including far more conversations (Plura AI, updated 2026-09-02).

Neither is automatically the right answer, and the honest trade looks like this:

A person handles the unusual call better. A confused, upset, or genuinely complicated caller is where a human still clearly wins.
AI handles the repetitive call at a price that lets you cover every hour. Most inbound calls to a local service business are a small set of repeated questions: are you open, do you cover my area, how much roughly, can you come Tuesday. Paying $10 a call for those is expensive.
The volume question decides it. At 30 calls a month, a live-staffed plan is affordable and the quality difference is worth it. At 400 calls a month it is not a realistic budget for most small businesses, and the choice becomes AI for the common calls with a clear escalation path for the rest.

So the question to ask is not "AI or human?" but "what happens to the calls the AI cannot handle?" That is a cost question as much as a quality one. Ask every vendor: when the assistant cannot resolve a call, what happens — does it take a message, transfer to a person, text you immediately, or simply end? And is that transfer or message billed as an extra event? A cheap plan that silently drops the hard calls is not cheap; it is just moving the cost onto the lead you lost.

How to estimate your own volume before you shop

Every question in the worksheet depends on knowing your own numbers, and most owners have never counted. You do not need a system for this — you need about fifteen minutes.

Pull three months of call logs from your phone bill or mobile carrier. Almost every carrier exposes this. Count inbound calls only.
Find your busiest month, not your average month. Your average month will not be the one that produces the surprise bill. Write down the busiest month's total; that is the number you put into worksheet question 3.
Estimate average call length if you are considering any per-minute plan. Carrier logs usually show duration. If they do not, time ten calls by hand over a week — it is rough, but a rough real number beats a vendor's assumption.
Count how many arrived outside your working hours. This is the number that tells you whether after-hours coverage is the main thing you are buying, and it is often larger than owners expect.
Separate the repeated questions from the real conversations. Rough proportions are fine. The higher the share of repeated questions, the more an AI plan is likely to earn its price.

Take those five numbers into every quote. A vendor who cannot price against your busiest month, your after-hours share, and your call mix is not giving you a quote — they are giving you a brochure.

The worksheet: ten questions to ask any vendor

Take this to every quote. It is designed so two answers can be compared side by side, which is the thing pricing pages make hardest.

What is the billing unit — per minute, per call, flat, or hybrid?
What is included, and what is the overage rate once I pass it?
What is my bill at three times my normal volume? Ask for the number, not a reassurance.
Is appointment booking included, or per call? Same question for transcription, recording, and payments.
Is after-hours and weekend coverage included in this price?
How many CRM or calendar integrations are included, and what does an additional one cost?
Am I billed for spam and wrong numbers? How is that determined?
What exactly does setup include, and who does it? If setup is free, which of those steps still happen?
What is the contract length, the notice period, and the refund policy?
When the assistant gets something wrong, who do I contact, and how fast do they respond?

How to score it. Put your own realistic normal month and your worst month into questions 2 and 3 for every vendor. Compare the two totals, not the headline price. Then check how many of questions 4–7 turn into extra line items. A plan that is $100/month cheaper on the page and adds $1.50 per booked appointment stops being cheaper once the bookings pile up: $100 ÷ $1.50 = 66.67, so with all other costs equal the extra fees exceed the saving at 67 bookings in a month — and below that it is still the cheaper option. Work out your own crossover before you sign.

Where AlgoEthos sits

We publish one price for this: AI Receptionist at $200/month, no setup fee, month-to-month (algoethos.ai/pricing, observed 2026-09-12). The phone is answered day and night, appointments get booked, and a real person reviews it monthly.

We are showing you the worksheet above because we would rather you ask us those ten questions than sign something you cannot predict. If your volume is genuinely small and steady, a budget per-minute plan may cost you less than we do, and you should take it. If your volume moves — and for most local service businesses it does — the predictable structure is usually worth more than the lowest headline number.

Next step: if you want the ten questions answered for your actual call volume, ask us for a free AI walkthrough and quote. No obligation, and we will tell you plainly if the fit is not there.