PyAI vs Vapi · as of June 2026
PyAI vs Vapi
PyAI Omni is $0.05/min*. *Managed telephony is $0.01/min separately. All-in lower than packaged platforms like Vapi, whose advertised ~$0.05/min is a platform fee that lands at about $0.10-$0.31/min once you add STT, an LLM, TTS, and telephony.
PyAI
One socket, per-second AI billing, and explicit speech + brain and telephony line items, without a platform fee plus four passthrough bills.
Vapi
All-in ~$0.10-$0.31/min once STT, LLM, TTS, and telephony are added (estimated as of writing - verify).
TL;DR
- $0.05/min* vs Vapi all-in about $0.10-$0.31/min (estimated, verify). *Managed telephony is $0.01/min separately.
- One socket instead of STT + LLM + TTS + telephony hops
- ~390 ms voice-to-voice, in-region, early measurement, not an SLA
- Choose Vapi when picking your own STT, LLM, and TTS providers is the point
How much does PyAI cost vs Vapi?
PyAI: $0.05/min* for Omni speech + brain. *Managed telephony is $0.01/min separately.
| PyAI | Vapi | |
|---|---|---|
| Advertised | $0.05/min speech + brain, no platform fee | ~$0.05/min platform fee |
| + Speech / LLM | Included | Billed separately |
| + Telephony | $0.01/min managed, listed separately | Carrier or passthrough |
| On a phone call | $0.05/min* | ~$0.10-$0.31/min (estimated, verify) |
| Turn-taking | ~390 ms voice-to-voice, in-region (early measurement, not an SLA) | Depends on the stitched stack |
| The catch | *Managed telephony is $0.01/min separately. | The advertised price is only the orchestration layer |
PyAI latency is an in-region early measurement, not an SLA.
How fast is PyAI vs Vapi?
~390 ms median voice-to-voice, in-region, human conversational pace, with barge-in. Early measurement, not an SLA. We do not claim fastest speech-to-speech.
Methodology and test conditions live on the benchmarks page. Every published latency number is in-region.
Why teams pick PyAI over Vapi
One model runs the whole call - not a stitched pipeline.
One speech-to-speech model, not seven boxes
Omni is a single model: audio in, audio out. No stitching STT, VAD, turn detection, an LLM, RAG, and TTS together - so there's one thing to ship and nothing between the hops to break.
Built for telephony (8 kHz)
Tuned for narrowband phone audio, not studio takes, so accuracy and turn-taking hold up on real lines.
Human conversational pace, with barge-in
~390 ms median voice-to-voice (in-region) with barge-in and warm transfer - conversations feel like a person, not a walkie-talkie. Early in-region measurement, not an SLA.
Grounded, tool-using, and explicit
Answers from your knowledge base, calls your tools, and uses a documented native frame protocol. Realtime migrations require an audio and control-event adapter.
The chart
All-in price per minute (USD)
Lower is better. PyAI in teal. The bar spans each platform’s typical all-in range.
$0.05/min Omni or $0.08/min Agents Live Beta. *Managed telephony is $0.01/min separately.
Advertised from ~$0.09/min self-serve → all-in $0.11-$0.14/min once LLM, voice, and telephony are added.
Advertised agent minutes + LLM → all-in $0.10-$0.15/min once LLM, voice, and telephony are added.
Advertised no-code plans → all-in $0.11-$0.16/min once LLM, voice, and telephony are added.
Advertised ~$0.05/min platform fee → all-in $0.10-$0.31/min once LLM, voice, and telephony are added.
Advertised ~$0.07/min platform → all-in $0.13-$0.31/min once LLM, voice, and telephony are added.
PyAI bars are the published Omni and Agents rates. Managed telephony is $0.01/min separately. AI usage bills per second; telephony uses a 1-minute pulse. Packaged figures are the advertised platform fee plus STT/LLM/TTS/telephony passthrough estimates as of June 2026, composite and config-dependent, so verify before relying on them.
When Vapi is the better pick
Vapi remains useful when picking your own STT/LLM/TTS providers is the primary requirement.
Choose PyAI when developers who want to stop stitching providers and paying four bills, and still keep an API-native workflow.
FAQ
How much does PyAI cost vs Vapi?
PyAI: $0.05/min* for Omni speech + brain. *Managed telephony is $0.01/min separately. Vapi: ~$0.05/min platform fee advertised; all-in ~$0.10-$0.31/min once STT, LLM, TTS, and telephony are added (estimated as of writing - verify). Public comparison data should be verified before procurement decisions.
How fast is PyAI vs Vapi?
~390 ms median voice-to-voice, in-region, human conversational pace, with barge-in. Early measurement, not an SLA. We do not claim fastest speech-to-speech.
When should I choose PyAI over Vapi?
Developers who want to stop stitching providers and paying four bills, and still keep an API-native workflow.
When is Vapi the better pick?
Vapi remains useful when picking your own STT/LLM/TTS providers is the primary requirement.
How do I test a replacement without a risky rewrite?
Start with one call path, use a PyAI test key and free credits, replay real calls, and compare quality, latency, completion rate, and all-in cost before routing production traffic.
One voice stack. One bill. Built for phone agents.
Start with $50 in free credit. No card.