AI receptionist pricing models, explained (and compared)

Every AI receptionist does roughly the same job, but the bills behave nothing alike. The category has settled into five pricing models, and picking the wrong one for your call pattern is the most common buyer's mistake we see. All numbers below were verified against vendor pricing pages on 2026-09-03; links and sources are on each tool's profile in our directory.

Examples: Rosie ($49/mo for 250 min; $149/mo for 1,000) and Dialzara ($29/mo for 60 min up to $349/mo for 1,000, with published $0.35–$0.48/min overages).

Behavior: great for short, transactional calls; punishing for chatty ones. A 6-minute average call halves your effective capacity versus a 3-minute average. Always find the overage rate before buying — Dialzara publishes its rates; Rosie doesn't, which we flag on its profile.

Example: Smith.ai's AI receptionist (Free $0/mo for 25 calls, Pro $150/mo for 75–300 calls tiered, Enterprise $500/mo for 300–1,000+; $2.00–$3.00/call overage depending on tier).

Behavior: duration doesn't matter, so complex calls are free to run long. The catch: a marketing campaign that spikes your call count generates overage on every extra call regardless of how trivial it was.

Example: Goodcall ($79–$249/mo per agent; 100–500 unique customers; $0.50 per extra; unlimited minutes).

Behavior: the same customer calling five times costs you once. Excellent for businesses with repeat callers (status checks, reschedules). The multiplier to watch is per-agent pricing across lines and locations.

Examples: Slang.ai (from $399/mo per location, "starting at") and AIRIN (Reception $59/mo, Pro $139/mo, Max $259/mo published tiers, with multi-location/custom still quoted) — and, at the far quote-only end, Sonant AI, which publishes no price at all.

Behavior: a known monthly number you can budget, when a vendor actually publishes one. AIRIN's three tiers each list an exact price and their own overage rate, so it behaves close to Model 1's per-minute allowances (200/500/1,000 min included, $0.65/$0.50/$0.45 per min over) rather than a pure quote. Slang.ai's "starting at," AIRIN's multi-location/custom tier, and Sonant AI's entire pricing model are the parts of this category still worth a sales call before you know your real number. We say this plainly even though AIRIN is our own product: its published tiers now give you a price card; its multi-location/custom tier still doesn't.

Examples: Retell AI (~$0.07–$0.31/min all-in), Synthflow (~$0.15–$0.24/min typical), Vapi (configuration-dependent).

Behavior: by far the cheapest per minute — and you pay separately in engineering. These are platforms for building your own agent, not services. A 1,000-minute month that costs $149 on Rosie might cost ~$100–$240 in platform fees plus the build and maintenance.

Estimate three numbers for your business: calls per month, average minutes per call, and the percentage of calls from repeat customers. Then price your real pattern under each model. A 300-call, 4-minute-average month is ~1,200 minutes (Rosie Growth territory at $299, or Dialzara Elite at $349), ~300 calls (right at the top of Smith.ai's $150/mo Pro tier), or — if 40% are repeats — ~180 unique customers (Goodcall Growth, $129).

Same business, same phones — monthly bills from $129 to $349. That's why the model, not the sticker, should drive the shortlist. Our best AI receptionists guide groups the picks by segment with this math in mind.