The lowest monthly price rarely tells you what an AI receptionist will cost in your business. The unit being billed—and what the plan includes—matters more.
Per-minute pricing
Per-minute plans are easy to understand when call length is stable. Costs can move quickly if callers ask detailed questions, hold during transfers, or encounter long qualification flows. Ask how rounding, spam, hold time, and overages are treated.
Per-call pricing
Per-call plans make short and long calls cost the same within a tier. They can be predictable for businesses with varied call length, but repeated callers and junk calls matter. Ask what counts as a call and whether unanswered transfers or spam consume the quota.
Per-customer and bundled pricing
Some providers bill by unique caller, while others bundle voice with messaging, CRM, or broader phone service. These can align well when the included tools replace something you already pay for. They are less attractive if the bundle creates a system change the business does not need.
Flat-rate language needs a definition
“Unlimited” may still have fair-use rules, feature limits, agent limits, or paid add-ons. “Flat rate” may exclude setup, integrations, extra numbers, outbound use, or human backup. Read the plan terms, not just the card.
Model your own month
Use a recent call log to estimate answered calls, average duration, repeat callers, spam, transfers, and seasonal peaks. Add setup and integration costs. Then compare the outcome you need: message capture, qualification, scheduling, human escalation, or a complete phone-system replacement.
Pricing is not simply a cost question. It tells you what behavior the vendor is built to optimize.