Your Ultimate Path to Voice AI

Pay as you go
- Free to start, then usage-based
- Telephony: Synthflow Twilio / Bring Your Own Telephony
- 5 concurrent calls, then $20/reserved concurrency
- Compliance (SOC2, GDPR, ISO 27001)
- Unlimited Agents, API & Integrations
- Support via Ticketing
Enterprise
- Guaranteed Uptime & SLA 99.99%
- SIP Trunking, Synthflow Native Telephony
- White Label & Reseller Toolkit
- Unlimited Concurrent Calls & Custom Workflows
- API Rate Limits: Custom + Priority
- Advanced Compliance: MSA support, geo-based sub-processing, on-premise multi-region deployment, flexible hosting options, and more.
- Enterprise Onboarding, Training, and Support




















Estimate Your Costs
10,000
Includes
Pick LLM
Pick Telephony

Compare Plans and Make the Right Choice
MSA Support, Geo-Based Sub-Processing, On-Premise Multi-Region Deployment, Flexible Hosting Options, and more.
Everything You Need to Know About Synthflow’s AI Voice Agents
How much does Synthflow cost per minute?
Most pay-as-you-go (PAYG) setups fall between $0.15 and $0.24 per minute, depending on your LLM and telephony selections.
Is Synthflow AI free?
Yes — it’s free to create an account and build your agent. Usage charges apply only when you make calls or send messages.
Can I use Synthflow with my Starter, Pro, Growth, or Agency plan?
Yes. You can continue using Synthflow on any of the previous plans.
Can I use my own Twilio account?
Yes. Bring Your Own Twilio is free. You can also use Synthflow-managed Twilio for $0.02/min, or upgrade to Enterprise for Synthflow Native Telephony.
Can I white-label on PAYG?
Yes. White-labeling is available as an add-on for $2,000/month, and it is included in the Enterprise plan.
How do I scale concurrency?
PAYG includes 5 concurrency units by default. You can add more for $20/unit/month, or choose Enterprise for unlimited concurrency.
Does Synthflow AI have a free trial?
You can build and test your agent for free. To deploy to production, you’ll need to add your payment details.
How am I charged for minutes?
Successful calls are billed based on actual seconds used.
Am I charged for failed calls?
No. Failed calls incur no charges.