Retell AI vs Synthflow
How the two platforms compare on pricing, live demos, calls, integrations, and setup — highlighted where they differ.
Voice Agent Platform
Retell AI
Voice AI platform for building low-latency phone agents across support, scheduling, and sales workflows.
AI Receptionist
Synthflow
No-code and workflow-focused AI voice agent platform for business call automation.
Highlighted rows differ between these picks
| Attribute | Retell AI | Synthflow |
|---|---|---|
| Platform type | Voice Agent Platform | AI Receptionist |
| Pricing | $0.07-$0.31/min $0.07-$0.31/min; custom pricing available | $0.15-$0.24/min PAYG $0/mo + about $0.15-$0.24/min; Enterprise custom |
| Test it | Free trial | (740) 284-8845 |
| Calls | Inbound, Outbound | Inbound, Outbound |
| Human handoff | Yes | Yes |
| Setup difficulty | Medium | Easy |
| Use cases | Customer Support Appointment Scheduling Lead Qualification AI Receptionists | AI Receptionists Appointment Scheduling Lead Qualification Customer Support |
| Useful for |
|
|
| Integrations | ||
| Zapier | ||
| Twilio | — | |
| Custom API | — | |
| CRM | — | |
| Calendar | — | |
| HubSpot | — | |
| Calendly | — | |
| Google Calendar | — | |
| Webhooks | — | |
Platform type
- Retell AI
- Voice Agent Platform
- Synthflow
- AI Receptionist
Pricing
- Retell AI
$0.07-$0.31/min
$0.07-$0.31/min; custom pricing available
- Synthflow
$0.15-$0.24/min
PAYG $0/mo + about $0.15-$0.24/min; Enterprise custom
Test it
- Retell AI
- Free trial
- Synthflow
- (740) 284-8845
Calls
- Retell AI
- Inbound, Outbound
- Synthflow
- Inbound, Outbound
Human handoff
- Retell AI
- Yes
- Synthflow
- Yes
Setup difficulty
- Retell AI
- Medium
- Synthflow
- Easy
Use cases
- Retell AI
- Customer SupportAppointment SchedulingLead QualificationAI Receptionists
- Synthflow
- AI ReceptionistsAppointment SchedulingLead QualificationCustomer Support
Useful for
- Retell AI
- • Fast voice prototypes
- • Support call automation
- • Scheduling workflows
- Synthflow
- • No-code setup
- • AI receptionists
- • Appointment workflows
Integrations
| Retell AI | Synthflow | |
|---|---|---|
| Zapier | ||
| Twilio | — | |
| Custom API | — | |
| CRM | — | |
| Calendar | — | |
| HubSpot | — | |
| Calendly | — | |
| Google Calendar | — | |
| Webhooks | — |
What would these cost to run?
Enter your call volume once and see Retell AI and Synthflow priced at the same usage, ranked alongside every other platform.