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Side-by-side facts to help you choose between voice agents or platforms.
Side-by-side facts to help you choose between voice agents or platforms.
Developer API
Developer voice AI platform with a unified Voice Agent API for building real-time conversational agents.
AI Receptionist
No-code AI voice agent platform for business call automation, now sold through enterprise contracts.
Highlighted rows differ between these picks
| Attribute | Deepgram | Synthflow |
|---|---|---|
| Platform type | Developer API | AI Receptionist |
| Pricing | $0.075/min $4.50/hour ($0.075/min) for Voice Agent API | Enterprise pricing Enterprise contracts from $30,000/year; no self-serve plan |
| Test it | Open live demo | (740) 284-8845 |
| Calls | Inbound, Outbound | Inbound, Outbound |
| Human handoff | Yes | Yes |
| Setup difficulty | Technical | Easy |
| Use cases | Customer Support Appointment Scheduling Lead Qualification Order Taking | AI Receptionists Appointment Scheduling Lead Qualification Customer Support |
| Useful for |
|
|
| Integrations | ||
| WebSocket API | — | |
| Custom API | — | |
| Function calling | — | |
| Twilio | — | |
| BYO LLM | — | |
| BYO TTS | — | |
| HubSpot | — | |
| Zapier | — | |
| Calendly | — | |
| Google Calendar | — | |
| +1 more across these tools — see each profile for the full list. | ||
$0.075/min
$4.50/hour ($0.075/min) for Voice Agent API
Enterprise pricing
Enterprise contracts from $30,000/year; no self-serve plan
| Deepgram | Synthflow | |
|---|---|---|
| WebSocket API | — | |
| Custom API | — | |
| Function calling | — | |
| Twilio | — | |
| BYO LLM | — | |
| BYO TTS | — | |
| HubSpot | — | |
| Zapier | — | |
| Calendly | — | |
| Google Calendar | — |
+1 more across these tools — see each profile for the full list.
Enter your call volume once and see Deepgram and Synthflow priced at the same usage, ranked alongside every other platform.