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Pricing

Per-second billing for AI voice agents

With whole-minute billing, a 61-second call is billed as two minutes. We bill AI voice agents by the second, so you pay for the conversation and nothing else.

Try it on a single call

Drag to compare per-second billing with rounding up to the next minute, at the same rate.
Billed by the second
$1.13
Rounded up to the minute
$1.50

Rounding up adds 33% to this call. With 365vox, a 90-second call is billed as 90 seconds.

What per-minute rounding adds

Billed time and overpayment for example call lengths under per-minute rounding
Call lengthBilled per minuteBilled per secondRounding adds
0:201:000:20200%
0:351:000:3571%
0:401:000:4050%
1:012:001:0197%
1:052:001:0585%
1:302:001:3033%

Rounding adds = (billed minutes − actual minutes) ÷ actual minutes.

How to check rounding on your AI voice bill

  1. Find the billing unit

    Your invoice or terms say whether calls are billed per second, per 6 seconds, or per minute.

  2. Compare talk time to billed time

    Add up actual call durations from your call log and compare with billed minutes.

  3. Multiply by your volume

    With 1,000 calls a month averaging 25 unused seconds each, you’d pay for about 6.9 hours nobody spoke.

Per-second billing FAQs

What is per-second billing?
You’re billed for exactly the seconds of conversation. A 90-second call is billed as 90 seconds, not 2 minutes.
How much does a 90-second call cost with 365vox?
$1.13 USD at $0.75 per minute.
How much can per-minute rounding add?
It depends on call length: from a third or more on 90-second calls to double or more on very short calls.
Which calls are hit hardest by rounding?
Short calls — quick questions, wrong numbers, confirmations — and calls just over a minute boundary.
Does 365vox have a minimum per call?
No hidden minimums. You pay for conversation time.
How do I find out how my current provider bills?
Check the billing increment in your agreement or invoice, then compare billed minutes with your call log.
Is per-second billing more expensive per minute?
The rate is the same per minute. You simply don’t pay for seconds nobody used.
Where can I see the full pricing?
On the AI receptionist pricing page.

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