TL;DR / Key Takeaways
- AI receptionists are priced four ways in 2026 — flat subscription, per-minute, per-call, and included-minutes-with-overage.
- This guide decodes each model with real tiers from Smith.ai, Rosie, Goodcall, Retell AI, Vapi, Bland AI, AgentZap, Voksha and more, exposes the per-minute 'advertised vs all-in' trap, and works a 300-call month through every model so you can estimate your own monthly cost.
Short answer: AI receptionists are sold four ways in 2026 — flat subscription, per-minute, per-call, and included-minutes-with-overage (a hybrid). Flat plans run roughly $49–$399/mo, per-minute lands around $0.10–$0.31 all-in, and per-call runs about $1.60–$2.40. For most small businesses under ~500 calls a month, a flat or hybrid plan is the cheapest and most predictable — usually $50–$300/mo.
Why the pricing model matters more than the sticker
Two AI receptionists can advertise "$99/month" and cost you wildly different amounts, because they meter you differently. One might include unlimited minutes; another gives you 150 calls and then bills $1 each after. The right question isn't "what's the monthly price?" — it's "how does this scale with my call volume?" Get that wrong and a cheap-looking plan becomes the most expensive one you could have picked.
And the stakes are real: a 2024 study of 85 businesses found only 37.8% of incoming calls are answered by a live person, 85% of missed callers never call back, and the average small business loses an estimated $126,000 a year to missed calls (Aira). An AI receptionist that answers 24/7 pays for itself fast — as long as you don't overpay for it.
The four pricing models, decoded
| Pricing model | Example tools | Typical cost | Best when |
|---|---|---|---|
| Flat subscription | Goodcall, Rosie, Simple Phones, Slang.ai, Ruby | $49–$399/mo (fixed) | Predictable, low-to-moderate volume; you want one number on the invoice |
| Per-minute (usage-based) | Retell AI, Vapi, Bland AI, Synthflow | $0.07–$0.31/min all-in | Developers / agencies who'll build and tune the agent themselves |
| Per-call | Smith.ai | ~$1.60–$2.40/call (from ~$500/mo) | Lower call counts where a human-quality answer per call is worth it |
| Included minutes + overage | AgentZap, Voksha, Dialzara, Phonely, My AI Front Desk | $14–$990/mo + overage | SMBs who want a base plan but occasional spikes covered |
Flat subscription: one price, no math
The simplest model, and the one most small-business owners actually want. You pay a fixed monthly fee and stop thinking about it. Goodcall offers unlimited minutes with a cap on unique customers per month (pricing is quote-only). Rosie charges $49 (250 min), $149 (1,000 min), or $299 (2,000 min). Simple Phones starts at $49/mo. At the premium end, restaurant-focused Slang.ai and human-plus-AI service Ruby are quote-based — priced per location or by receptionist minutes.
The catch: "flat" usually means a capped allowance (minutes, calls, or unique customers). Blow past it and you either hit an overage rate or need the next tier up. Flat pricing is cheapest when your volume is steady and comfortably inside the cap.
Per-minute: cheapest at scale, if you can build it
The developer platforms — Retell AI, Vapi, Bland AI, Synthflow — bill by talk time. This is the cheapest model per unit at volume, but the advertised base rate is never what you pay. Vapi advertises a $0.05/min platform fee, but that sits on top of pass-through speech-to-text, LLM, text-to-speech, and telephony costs. Retell AI stacks the same way: ~$0.055/min voice infra + TTS + an LLM add-on (a Claude or GPT model adds $0.045–$0.16/min) + ~$0.015/min telephony. Bland AI is more bundled at $0.11–$0.14/min talk time, but the cheaper rates require a $299–$499/mo platform fee.
Per-minute wins for agencies and developers who'll build, prompt, and maintain the agent themselves. For a non-technical owner, the DIY setup cost and ongoing tuning usually erase the per-minute savings.
Per-call: pay per conversation, not per second
Smith.ai is the notable per-call player. Its AI Receptionist starts around $500/mo, billing by answered conversation at an effective rate near $1.60–$1.90/call inside your tier and ~$2.40/call in overage — with no charge for spam calls. Add-ons like appointment scheduling (~$1.50/call) and payment collection (~$1.00/call) stack on top.
Per-call is easy to reason about — you know exactly what one answered call costs — and it's economical at lower volumes. It gets expensive fast if you take hundreds of calls a month, where a per-minute or flat plan pulls ahead.
Included minutes + overage: the hybrid most receptionists use
The dominant model for purpose-built SMB receptionists: a monthly base with an included allowance, then a per-minute or per-call overage. AgentZap runs $109–$295/mo (150+ included minutes; overage $0.70–$0.85/min; note a $499 one-time setup on most tiers). Voksha starts at just $14/mo (15 calls, then $1/call) up to $99/mo (150 calls, then $1/call). Dialzara spans $29–$349/mo (60–1,000 min; overage $0.35–$0.48/min). Phonely offers usage-based plans (pricing quote-only), and My AI Front Desk offers a $16/mo entry plan scaling to $79/mo with usage credits.
Hybrids give you a predictable floor with a safety valve for busy months. The thing to watch is the overage rate and any setup fee — a low base with a steep per-minute overage can beat or lose to a flat plan depending on your real volume.
Worked example: what a 300-call month actually costs
Say a busy salon or clinic takes 300 calls a month, averaging 2 minutes each — about 600 minutes. Here's roughly what each model bills:
| Model | Example plan | Monthly cost |
|---|---|---|
| Per-minute | Bland AI Start, $0.14/min × 600 min | ~$84 (plus DIY setup + tuning) |
| Per-minute | Retell / Vapi all-in ~$0.15/min × 600 min | ~$90 (plus DIY setup + tuning) |
| Flat subscription | Rosie Scale ($149, 1,000 min included) | $149 (room to spare) |
| Included + overage | Voksha Premium ($99 + 150 overage calls × $1) | ~$249 |
| Per-call | Smith.ai AI (~$1.75/call × 300) | ~$525 |
The per-minute platforms look cheapest on paper (~$85–$90) — but that number ignores the hours you'll spend building and maintaining the agent. For a non-technical owner, a flat plan like Rosie (~$149) is the sweet spot of price and zero-effort. Per-call Smith.ai costs the most raw at this volume, but buys a polished, human-grade answer and spam filtering. There's no single "cheapest" — it depends on volume and how much building you're willing to do.
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Enterprise and quote-only tiers
A few platforms don't publish self-serve pricing at all. PolyAI is quote-only, aimed at enterprise contact-center deployments. Numa (auto-dealership focused) is quote-only per rooftop. And Synthflow's pricing gives way to an enterprise contract you have to request a quote for. If a vendor hides pricing behind a demo, assume it's aimed at multi-location or high-volume operations — and that the AI-tools market overall runs from about $25 to $899/mo for everyone else (AgentZap).
The hidden costs to check before you sign
- 1Setup / onboarding fees — some hybrids (e.g. AgentZap) charge a one-time ~$499 to build your agent.
- 2Telephony billed separately — many per-minute platforms pass through carrier and phone-number costs ($2–$15/mo per number) on top of talk time.
- 3Overage rates — the number that decides whether a "cheap" hybrid stays cheap in a busy month.
- 4Add-ons — appointment booking, payment collection, SMS, extra languages, and CRM sync are often line items, not included.
- 5Annual lock-in — most flat and enterprise plans discount ~15–20% for annual billing; usage platforms are usually month-to-month.
So which model should you pick?
- 1Under ~150 calls/month, non-technical: a flat plan (Rosie, Goodcall, Simple Phones) or a low hybrid base (Voksha, My AI Front Desk). Predictable and cheap.
- 2150–500 calls/month: a mid flat tier or an included-minutes hybrid (AgentZap, Dialzara, Phonely) that covers your spikes.
- 3High volume + technical: a per-minute platform (Retell AI, Vapi, Bland AI) — cheapest per unit if you'll build it yourself.
- 4Low volume, human-grade answers: per-call Smith.ai, where you pay only for real conversations.
→ **Compare all AI receptionists** side by side, with current pricing and features.
Frequently asked questions
How much does an AI receptionist cost per month?
For most small businesses, $50–$300/month buys 24/7 answering with appointment booking. Entry hybrids start as low as $14–$29/mo (Voksha, Dialzara); flat plans cluster at $49–$149 (Rosie, Simple Phones); premium and per-call services run $300–$600+/mo. Enterprise and quote-only platforms (PolyAI, Numa) run far higher.
Is per-minute or flat-rate pricing cheaper?
It depends on volume. Per-minute is cheapest per unit at scale but requires you to build and maintain the agent, and the real all-in rate ($0.13–$0.31/min) is higher than the advertised base fee. Flat-rate is cheaper in effort and more predictable, and usually wins for non-technical owners under a few hundred calls a month.
Why is the advertised per-minute rate not what I pay?
Developer platforms like Vapi and Retell AI quote only their platform fee (~$0.05/min). On top of that you pay pass-through speech-to-text, the LLM, text-to-speech, and telephony — which typically doubles or triples the number to $0.13–$0.31/min all-in. Always ask for the all-in rate.
Are there hidden fees to watch for?
Yes: one-time setup fees (~$499 on some hybrids like AgentZap), separately billed telephony and phone numbers, overage rates once you exceed your allowance, and add-ons for booking, payments, SMS, and extra languages. Read the pricing page line by line before committing.
What's the cheapest AI receptionist?
On raw sticker price, hybrids like Voksha ($14/mo) and Dialzara ($29/mo) and free/low tiers on developer platforms are cheapest — but "cheapest" per your actual volume is what matters. If you take very few calls, look at genuinely free options before paying at all.
_Related reading: the best AI receptionist software of 2026 (our full pillar guide), what's actually free, and how AI receptionists cut deposits and no-shows._
**Compare all AI receptionists** — every tool above, with current pricing side by side.
_Affiliate disclosure: Stork runs an AI-tools directory and may earn a commission when you sign up through some links on this page, at no cost to you. Pricing shown reflects 2026 published rates and moves often — confirm current numbers on each vendor's page. We rank on quality and value, not commission._