Margin calculator. Your real cost per minute.
Pick your speech, model and voice providers. See what each minute costs you, what you keep, and how it compares with Vapi, Retell, Bland and Synthflow.
Your stack
Speech to text --
Language model --
Text to speech --
Telephony (SIP / PSTN) Blended average of Twilio (about $0.0067/min) and Telnyx (about $0.0041/min) US SIP trunking rates, the path LiveKit uses for phone calls. These are pay-as-you-go US rates: committed volume is lower, toll-free and international are higher, and monthly number rental is billed separately. $0.0054/min
LiveKit session The realtime WebRTC transport that carries call audio between the caller and your agent, separate from STT, LLM, and TTS. Self-hosting the open-source LiveKit server is roughly $0.0004/min in server and bandwidth. LiveKit Cloud runs about $0.0008 to $0.002/min for a two-party call. This uses the self-host estimate. $0.0004/min
Usage assumptions
These turn per-token and per-character prices into a cost per minute of live conversation. Defaults fit a typical back-and-forth call.
Price and volume
Model prices from pricetoken.ai, refreshed on each deploy. Telephony and LiveKit are blended estimates.
You keep each month
--
-- billed, minus -- in provider costs
Cost / min
--
Margin / min
--
Margin
--
Minutes / mo
--
Against the platforms
Cost per minute. Shorter is cheaper. ShipVoice -- keeps --/mo
Vapi
$
/min
keeps --/mo
Retell
$
/min
keeps --/mo
Bland
$
/min
keeps --/mo
Synthflow
$
/min
keeps --/mo
More each month than on Vapi --
Platform rates are typical all-in estimates. Edit them to match a real quote.
Bill every minute. Keep the spread.
ShipVoice meters each call and bills your clients through your own Stripe.
One note when it opens. No spam.