Short answer: for a small business in 2026, an AI receptionist runs roughly $50–$500/month all-in, plus a one-time setup of $0 to ~$2,000 depending on how deeply it's wired into your systems. That's a wide range, so here's exactly what you're paying for and what moves the number — no sales spin.
The three cost components
1. Setup / build (one-time). Configuring the agent's voice, script, knowledge, phone number, and any integrations. A basic answer-and-take-a-message agent can be near $0 to stand up. A custom agent integrated with your booking system, CRM, and fee schedule is real work — typically $500–$2,000, more for complex multi-location setups. (Vulcani charges no setup fee on its monthly plans.)
2. Per-conversation cost. The actual AI + telephony cost of each call: usually $0.20–$0.45 per call fully loaded. This scales with volume but stays tiny relative to the value of a booked customer.
3. Monthly retainer / platform. Monitoring, prompt tuning, updates, and support: commonly $50–$500/month. Vulcani's AI phone agent starts at $247/month; fully custom installs start at $497 one-time.
Versus the alternatives
- Hiring a receptionist: $2,000–$2,500/month part-time (loaded), $3,000–$4,000+ full-time — and they work business hours, one call at a time, and take vacations.
- Answering service: $200–$500/month plus per-call fees, staffed by people who don't know your business or your calendar and usually just take a message.
- AI receptionist: answers 24/7, handles several calls at once, books on the call, texts you summaries — at a fraction of a single human's cost.
(There's a fuller side-by-side on our homepage comparison table.)
What actually drives your price
- Call volume — more calls = more per-conversation cost (but more value captured).
- Integrations — live booking into your PMS/CRM, payments, or a fee schedule add build cost.
- Languages — bilingual (e.g. English/Spanish) handling.
- Complexity — simple after-hours capture is cheap; nuanced triage and routing is more.
Is it worth it?
The honest test: if you miss even a few calls a week and a customer is worth $100+, the agent usually pays for itself in the first month on captured calls alone — before you count after-hours and bilingual wins. If you genuinely answer every call already, the math is tighter (it's then mostly an after-hours and overflow play).
Your options
Done-for-you: see how Vulcani's AI phone agent works (from $247/month, no setup fee) or book a free 30-minute call to scope yours. More of a builder? Our automation templates cover the surrounding workflows (lead capture, follow-up, reviews) you'll want alongside the phone agent.
Related: AI receptionist for salons & spas · the real ROI of AI voice agents.