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Voice Agent Platform
AssemblyAI
Voice AI infrastructure and managed Voice Agent API for production real-time voice agents.
Developer API
pyannoteAI
Speaker diarization and identification API for knowing who said what in calls and meetings.
Highlighted rows differ between these picks
| Attribute | AssemblyAI | pyannoteAI |
|---|---|---|
| Platform type | Voice Agent Platform | Developer API |
| Pricing | $0.075/min $4.50/hour ($0.075/min) | Subscription pricing Developer €19/mo, Starter €99/mo with usage credit; Enterprise custom |
| Test it | Open live demo | Free trial |
| Calls | Inbound, Outbound | — |
| Human handoff | No | No |
| Setup difficulty | Technical | Technical |
| Use cases | Customer Support Appointment Scheduling Lead Qualification Healthcare Intake | Contact Center Automation Agent Assistance Custom Voice Apps |
| Useful for |
|
|
| Integrations | ||
| WebSocket API | — | |
| Custom API | — | |
| Tool calling | — | |
| Twilio | — | |
| LLM Gateway | — | |
| Guardrails | — | |
| pyannote.audio | — | |
| Any STT provider | — | |
| API playground | — | |
| On-premises deployment | — | |
Platform type
- AssemblyAI
- Voice Agent Platform
- pyannoteAI
- Developer API
Pricing
- AssemblyAI
$0.075/min
$4.50/hour ($0.075/min)
- pyannoteAI
Subscription pricing
Developer €19/mo, Starter €99/mo with usage credit; Enterprise custom
Test it
- AssemblyAI
- Open live demo
- pyannoteAI
- Free trial
Calls
- AssemblyAI
- Inbound, Outbound
- pyannoteAI
- —
Human handoff
- AssemblyAI
- No
- pyannoteAI
- No
Setup difficulty
- AssemblyAI
- Technical
- pyannoteAI
- Technical
Use cases
- AssemblyAI
- Customer SupportAppointment SchedulingLead QualificationHealthcare Intake
- pyannoteAI
- Contact Center AutomationAgent AssistanceCustom Voice Apps
Useful for
- AssemblyAI
- • Developer teams
- • Real-time voice agents
- • Streaming speech accuracy
- pyannoteAI
- • Call analytics and voice QA
- • Speaker-attributed transcripts
- • Meeting and medical scribe pipelines
- • Teams already using pyannote.audio
Integrations
| AssemblyAI | pyannoteAI | |
|---|---|---|
| WebSocket API | — | |
| Custom API | — | |
| Tool calling | — | |
| Twilio | — | |
| LLM Gateway | — | |
| Guardrails | — | |
| pyannote.audio | — | |
| Any STT provider | — | |
| API playground | — | |
| On-premises deployment | — |
What would these cost to run?
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