How Much Does an AI Receptionist Cost? (2026)
An AI receptionist costs about $18/month on pay-per-use pricing, $49–$149/month on minute or call tiers, and $199–$399/month for flat unlimited plans, as of August 2026 — vs $250–$900+ for human answering. The four billing models, real monthly totals, and the hidden costs to check first.
An AI receptionist costs anywhere from about $18/month on pay-per-use pricing (Dial Milo, at a typical 100-call month) to $49–$149/month on minute or call tiers (Rosie, Aira, Trillet, Dialzara) to $199–$399/month for flat unlimited plans(NextPhone; restaurant-only Slang.ai), as of August 2026. Human-staffed answering services covering comparable volume run $250–$900+/month. The price you actually pay depends less on the vendor than on whether its billing model matches your call pattern.
This page is the short answer. For every vendor, tier, overage rate, and source link, see the full 15-service comparison — every number below comes from the same August 2026 audit of vendors' published pricing pages, priced against the same scenario: 100 calls a month averaging 2.5 minutes (~250 minutes).
The Four Pricing Models, in One Minute
Per-minute tiers(Dialzara, Trillet, Ruby) sell a bucket of minutes with a flat price, then bill overage past it — Dialzara's $99 Pro plan covers 220 minutes and charges $0.45 for every minute after, so a 250-minute month lands at ~$112.50, not $99. The failure mode is the overage cliff: pick a tier you regularly exceed and the “extra few minutes” become the biggest line on the bill.
Per-call tiers(Aira, Smith.ai, Beside) charge by answered call — predictable per unit, but watch what counts as extra. Aira's $59.95 plan covers 90 calls with a gentle $1/call overage (~$70 at our scenario); Smith.ai's $810 plan bills $10.50 per extra call, and its per-call add-ons stack on top. The failure mode is add-on stacking, not the base rate.
Per-unique-caller(Goodcall, $79 Starter for 100 unique callers, unlimited minutes) is great when regulars call repeatedly — repeat callers are free. The failure mode is the marketing spike: a promotion that pulls in a wave of first-time callers moves you up the pricing ladder in exactly the month you're already spending on ads.
Pay-per-usehas no subscription at all — you pay per second of answered calls, so a slow month costs almost nothing and there's no tier to outgrow. The pay-per-use AI receptionist Dial Milo works out to about $18 at the 100-call month. The failure mode is budgeting on the promo headline: Milo advertises “from $0.01/min,” but the number to plan around is its ~$0.061/min effective rate plus $3/month for the phone number.
What a Typical Small Business Actually Pays
Priced at the same 100-call / 250-minute month, from vendors' own published pricing as of August 2026 (sources linked in the full comparison):
| Service | Model | Monthly @ 100 calls |
|---|---|---|
| Dial Milo | Pay-per-use (per-second), no subscription | ~$18 |
| Rosie (Professional) | Flat tier, 250 min | $49 |
| Aira (Premium) | Per-call ($59.95/90 calls + $1/call) | ~$70 |
| Dialzara (Pro) | Per-minute ($99/220 min + $0.45/min) | ~$112.50 |
| NextPhone (Pro) | Flat unlimited | $199 |
| Ruby (Standard) | Per-minute tiers, 100% human | ~$885–$920 est. |
| Smith.ai (Basic) | Per-call tiers, human-first hybrid | ~$915+ |
Ruby's overage rate is not published — its total uses independent estimates, not an official figure. Ranking is scenario-specific: past several hundred calls a month, flat unlimited plans start beating per-use and per-call pricing.
Hidden Costs to Check Before You Sign
- Overage cliffs:per-minute plans get expensive fast past the bucket — Dialzara bills $0.45/min beyond its 220 included minutes, and Ruby doesn't publish its overage rate at all, which is how one documented ConsumerAffairs case ended up billed $5,100 against an expected ~$660.
- Add-on stacking: Smith.ai charges per call for appointment booking ($1.50), notifications ($0.50), transcription ($0.25), and a Spanish line ($1.00) — up to $3.25 in add-ons per call before the base per-call price.
- Feature gating:the tier you can afford may not include the feature you came for — Rosie's $49 plan's “booking” texts callers a scheduling link, while booking directly onto your calendar starts at its $149 tier.
- Unique-caller spikes:on Goodcall's per-unique-caller billing, an ad campaign full of first-time callers raises your bill in the same month as the ad spend.
- Cancellation friction:recurring themes in public reviews of human-staffed services include charges continuing at cancellation — Smith.ai's Trustpilot profile carries repeated complaints of this kind, and a 2021 class action over Ruby's billing practices ended in a $12 million judgment.
Are AI Receptionists Worth It?
For most small businesses, yes — the math is short. If a single missed call is worth $200+ in booked work, one saved job pays for roughly a year of an ~$18/month pay-per-use service, and even a $149 flat tier pays for itself in a missed call or two a month. The honest exception: if your calls routinely need human judgment or a live transfer to a person mid-call, a pure-AI service is the wrong tool — budget $250–$900+/month for a human or hybrid service instead, and read the AI-vs-human answering service math before deciding.
One more cost lever worth checking: languages. Some services bill Spanish as an add-on or gate it behind higher tiers — see what bilingual answering actually costs if your callers aren't all English-speaking.
Frequently Asked Questions
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See What Your Call Volume Would Cost
Dial Milo answers your business line 24/7 with no subscription — about $18/month at 100 calls, six languages included.
Try Dial Milo — $1 Free CreditPure AI (no live transfer) — if you need a human in the loop, see the full comparison.