Free calculator

What will AI voice actually cost you?

Every platform quotes a per-minute rate. Almost none quote the whole bill. Enter your minutes to see the model, telephony, and add-on charges added back in — each figure sourced.

Your usage

Voice minutes per month430 min

Total talk time across every call your agent handles.

Or type it exactly

min

Calls at the same time

Concurrency. The first line is treated as included everywhere.

Compare using

Assumes every rival hits their cheapest model and tier.

Platform	Per month	Effective rate	vs. Voismatic	What's in that number
Vapi Advertised: $0.05/min platform fee vapi.ai/pricing	$31–133	$0.07–0.31/min	−$8.04/mo	$22 — Vapi platform fee $4.30–52 — Language modelSpread reflects a small fast model vs. a frontier one $2.15–39 — Speech-to-text + text-to-speech $3.01–22 — Telephony (your own carrier) $0 — Extra concurrency lines$10/line per month beyond the included set
Voismatic Pro Advertised: $39/mo flat voismatic.com/pricing	$39	$0.09/min	Baseline	$39 — Pro plan — 430 minutes, telephony and phone number included
ElevenLabs Advertised: $0.08/min + credits elevenlabs.io/pricing	$40–69plus charges they don't publish	$0.09–0.16/min	+$0.56/mo	$34 — Agent platform (credits) $2.15–22 — Language model tokens $3.01–13 — Telephony (your own carrier) not published — Burst over concurrency capCharged at 2× once you exceed your plan's concurrent calls The $0.08/min floor assumes a higher-volume credit tier; smaller plans land above it.
Retell AI Advertised: $0.07/min headline retellai.com/pricing	$58–135plus charges they don't publish	$0.13–0.31/min	+$19/mo	$30 — Voice engine $8.60–52 — Language model $8.60–26 — Speech-to-text $8.60–26 — Telephony $2 — Phone number not published — Extra concurrencyBilled above the included concurrency, rate not published
Bland AI Advertised: $0.14/min (or $299+/mo) bland.ai/pricing	$60plus charges they don't publish	$0.14/min	+$21/mo	$60 — Bundled per-minute ratePay-as-you-go rate — the cheaper tiers need a monthly plan not published — Per-dial and transfer feesCharged on top of call minutes Reaching the $0.11/min tier requires a $299–499/mo platform plan, so the effective rate at low volume is higher, not lower.
Synthflow Advertised: Tiered / Enterprise synthflow.ai/pricing	$194–249	$0.45–0.58/min	+$155/mo	$194–249 — Bundled per-minute rateEffective rate across their published self-serve tiers Self-serve tiers may be retired — the pricing page now leads with a $30,000/yr enterprise plan.

Reading this table

Charges they don't publish makes a row a floor, not a total — flagged rather than counted as zero.
Rivals' public rates as of July 2026, also itemised on our comparison. This market reprices often — confirm before deciding.
At this volume, pay-as-you-go can win on paper — before the assembly work, the second vendor, and a bill that moves monthly.

Start your pilot Or call the demo agent · (825) 395-1731

What the headline rate leaves out

The language model

Billed by tokens. The widest line item here — a frontier model can cost more than the platform fee.

Speech-to-text + text-to-speech

Two meters running the whole call. Premium voices cost more.

Telephony

Someone has to carry the call. On BYO-carrier platforms, a second vendor and a second invoice.

Phone numbers

A few dollars a month each, and you need one before call zero.

Concurrency

Capacity for simultaneous calls — per line, or burst pricing past your cap.

Questions

Why isn't the headline rate the real rate?

On most platforms the headline covers orchestration only. The model, speech-to-text, text-to-speech, and telephony are separate line items billed by whoever provides them. A $0.05/min platform fee is real — it just isn't the invoice.

What is a concurrency line?

How many calls can run at once — two callers at 9am need two lines. Platforms bundle a few and charge for more, since each reserves capacity. Vapi publishes $10/line per month; others bill for it without publishing a rate.

Which input changes the answer most?

Minutes, then model choice. Usage-based cost tracks minutes almost exactly, while a flat plan flattens out after its included block.

Why does a rival sometimes look cheaper?

Because at low volume it sometimes is. What you trade for it is assembly work, several vendors, and a bill that moves every month. We'd rather show you the crossover than hide it.

How current are these numbers?

Verified against public pricing pages in July 2026 and cited row by row. This market reprices quarterly, so confirm with the provider. Our own figures come from the live plan configuration, so they're always current.

Worth it at all?

The other half of the decision is what your missed calls are worth.

Missed call cost calculator