Pay As You Go
Usage-based pricing with no commitments
Pay As You Go (PAYG) is designed for builders, pilots, and small-scale deployments. Explore the platform at no cost, then pay only for the calls and chats you make.
What’s included
Every PAYG workspace includes:
You also get full access to the Synthflow Academy and community forum.
How PAYG billing works
Once you add a payment method, your workspace is subscribed to the PAYG plan at $0.00 per month. You’re only charged when you:
- Make phone calls with your agents
- Use chat agents
- Purchase add-ons
Calls are billed at $0.15–0.24 per minute depending on usage and destination. Learn more about how usage is calculated.
Once your balance reaches US$200, we’ll charge your card and send you an invoice. This keeps charges manageable instead of building up over time.
Add-ons
Expand your workspace capabilities with add-ons available in Settings > Add-Ons.
Concurrency
PAYG includes 5 concurrency units by default, allowing up to 5 simultaneous calls. Additional units cost $20 per month each.
Scale concurrency as your volume grows without renegotiating contracts or changing plans. This is ideal for businesses with fluctuating call volumes or seasonal spikes.
Learn more about call concurrency.
White-label toolkit
The white-label toolkit is available for $2,000 per month. It enables:
- Custom branding and domains
- Subaccount management
- Client-facing dashboards
- Rebilling capabilities
This add-on is designed for agencies reselling Synthflow to their own clients.
Learn more about agency and white-labeling.
Phone numbers
Purchase phone numbers directly in the Phone Numbers page. Options include:
- Local numbers
- Toll-free numbers
- International numbers
Each number costs $1.50 per month plus per-minute charges for calls. Review pricing before confirming and assign numbers to specific agents.
Learn more about purchasing phone numbers.
Coming soon
We’re expanding the PAYG add-on catalog to include:
- Alternative voice engines
- LLM routing options
- Global edge deployments
- Additional telephony providers
When to consider Enterprise
PAYG works well for most use cases, but you may want to consider Enterprise if you need:
- High volume: 10,000+ minutes per month
- Guaranteed uptime: 99.99% SLA
- Unlimited concurrency: No per-unit charges
- Dedicated support: Named account manager
- Custom integrations: SIP trunking, custom workflows
- Custom pricing: Volume discounts and committed rates
Compare plans on our pricing page or contact sales to discuss your requirements.
FAQ
Is there a free trial?
There’s no time-limited trial. You can explore the platform, build agents, use the flow designer, add knowledge bases, and preview voices without a payment method. Once you add a payment method and start making calls or using chat, usage-based charges begin.
What's the minimum commitment?
None. PAYG is month-to-month with no contracts. You can cancel anytime from the Billing Portal.
Can I upgrade to Enterprise later?
Yes. Contact our sales team to discuss upgrading. Your usage history and agents transfer seamlessly.
How do I add more concurrency?
Go to Settings > Add-Ons and purchase additional concurrency units at $20/month each.
Is white-labeling available on PAYG?
Yes. The white-label toolkit is available as a $2,000/month add-on. You don’t need Enterprise to white-label.
What happens if I exceed my concurrency limit?
Additional calls will be queued or may fail to connect. Monitor your concurrent call usage and add more units if you regularly hit limits.
Can I get volume discounts on PAYG?
PAYG has standard rates. For volume discounts and committed pricing, consider the Enterprise plan.
