Voice Agent Index

Cost model

Normalize quotes by outcome

Usage

Minutes expose hidden cost

Phone, model, voice, recording, and post-call analysis often scale with minutes even when the vendor sells a monthly plan.

Fallback

Escalation changes the math

Human backup can be worth paying for, but it should be modeled directly instead of treated as a vague support feature.

Outcome

Completion rate is the anchor

A call that does not book, qualify, route, or summarize cleanly still consumes minutes and staff review time.

How to use the estimate

Use this calculator before a demo and again after a test call. The first pass gives you a budget range. The second pass should use evidence from vendor logs, call transcripts, transfer records, and workflow completion counts.

A finished AI receptionist may include setup, a number, dashboard, call summaries, and basic integrations in one subscription. A developer platform may separate carrier usage, speech recognition, LLM usage, text-to-speech, recording, storage, logs, and engineering ownership. A hybrid answering service may price human fallback as part of the package.

What to ask vendors for

Cost line Question Why it matters
Included usage Are minutes pooled across locations, agents, and phone numbers? Usage pools can make the same plan cheaper or more expensive at multi-location scale.
Telephony Are numbers, SMS, recording, transfer, SIP, and carrier fees included? Phone costs are often outside the headline subscription.
Setup What workflow design, prompt tuning, and integration work is included? Cheap self-serve setup can become expensive if staff must clean up bad calls.
Fallback What happens when the agent cannot complete the task? Transfer quality affects conversion, caller trust, and staff workload.
Completion Can the vendor report successful outcomes by call type? Cost per completed workflow needs real outcome data.

Related buyer guides

Calculator FAQs

What is the best way to compare AI receptionist pricing?

Normalize each quote by monthly platform cost, included usage, overage, telephony, setup, integrations, human fallback, and expected completed workflows. Cost per completed workflow is usually more useful than cost per minute.

Should I use calls or minutes for the estimate?

Use both. Call count shows business volume, while average minutes expose telephony, model, and voice usage. Long intake calls can make a cheap per-call plan expensive if completion quality is low.

Why does completion rate matter?

A low-cost agent that fails often can cost more than a higher-priced plan that books, qualifies, or routes calls correctly. Completion rate turns pricing into an outcome model.