PyAI vs AssemblyAI Voice Agent API · as of June 2026
PyAI vs AssemblyAI Voice Agent API
PyAI Omni is $0.05/min*, below the $0.075/min AssemblyAI Voice Agent API bundled rate. *Managed telephony is $0.01/min separately. AssemblyAI has strong speech credibility.
PyAI
Omni at $0.05/min*, competitive with bundled voice-agent APIs around $0.075/min. *Managed telephony is $0.01/min separately.
AssemblyAI Voice Agent API
Public pricing as of June 2026.
TL;DR
- $0.05/min* vs $0.075/min Voice Agent API (public, verify). *Managed telephony is $0.01/min separately.
- Grounded turn-taking is built into Omni
- Documented native WebSocket protocol
- Choose AssemblyAI when speech-infrastructure brand is the buying criteria
How much does PyAI cost vs AssemblyAI Voice Agent API?
PyAI: $0.05/min Omni speech + brain + optional $0.01/min managed telephony; grounded turn-taking is built in.
| PyAI | AssemblyAI Voice Agent API | |
|---|---|---|
| Bundled agent rate | $0.05/min*. *Managed telephony is $0.01/min separately. | $0.075/min Voice Agent API (public, verify) |
| Turn-taking | Built into Omni | Part of the Voice Agent API bundle |
| When they win | Predictable line items plus a native Omni protocol | Speech infrastructure credibility |
PyAI latency is an in-region early measurement, not an SLA.
How fast is PyAI vs AssemblyAI Voice Agent API?
~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 AssemblyAI Voice Agent API
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 AssemblyAI Voice Agent API is the better pick
AssemblyAI has strong speech infrastructure credibility.
Choose PyAI when builders who want bundled realtime agents with predictable pricing and a native WebSocket protocol.
FAQ
How much does PyAI cost vs AssemblyAI Voice Agent API?
PyAI: $0.05/min Omni speech + brain + optional $0.01/min managed telephony; grounded turn-taking is built in. AssemblyAI Voice Agent API: $0.075/min for Voice Agent API according to public pricing. Public comparison data should be verified before procurement decisions.
How fast is PyAI vs AssemblyAI Voice Agent API?
~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 AssemblyAI Voice Agent API?
Builders who want bundled realtime agents with predictable pricing and a native WebSocket protocol.
When is AssemblyAI Voice Agent API the better pick?
AssemblyAI has strong speech infrastructure credibility.
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.