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Synthflow
No-code voice agent builder for sales and support — pay-per-minute, no monthly minimum
APIZapierFree tierSOC 2
Overall score
3.3/ 5
SME Fit3/5
usage-metered pricing + free tier
JTBD3/5
moderate JTBD clarity
Integration5/5
API + Zapier + 6 integrations
Trust3/5
growing, founded 2023
Quality1/5
no public rating
Compliance4/5
SOC 2 + GDPR
About
Synthflow is a no-code voice AI agent builder aimed at agencies, sales teams, and SMBs that want voice agents without writing code. Build agents in a visual flow editor, deploy on inbound numbers, route through Cal.com or HubSpot. Pricing is pay-as-you-go with no platform floor on the entry tier — you only pay for the calls you make.
Best for: Agencies running outbound for client books, SMB sales teams that want booking and qualification without devs, and customer-ops teams adding inbound voice answering. The no-code builder is the differentiator — pick Synthflow if your team can't write API code.
Pricing
| Tier | Monthly | Annual /mo | Billing | Notes |
|---|---|---|---|---|
| Pay-as-you-go | Free | Free | usage | Free account creation;Voice engine: $0.09/min;LLM: $0.02-$0.05/min depending on model;Telephony: $0.02/min (Synthflow-managed) or $0/min (BYO Twilio);5 concurrent calls included;Additional concurrency: $20/unit/mo;SOC 2;GDPR;ISO 27001 · Most common combined cost is $0.15-$0.24/min. No platform fee — you only pay for usage. |
| Enterprise | — | — | flat | Starts at 10,000 minutes/month;Unlimited concurrent calls;HIPAA;Advanced compliance features;99.99% uptime SLA · Contact sales — minutes-based custom pricing. |
Key features
- No-code visual agent builder
- Pay-as-you-go with no platform floor
- SOC 2 and GDPR included on entry tier
- BYO Twilio option for cheaper telephony
- 5 concurrent calls included
- Cal.com booking and GoHighLevel integration
- Public API and Zapier app
- ISO 27001 certified
Integrations
Cal.comGoHighLevelHubSpotSalesforceZapierTwilio
Trust & compliance
- Stage range
- —
- Founded
- 2023
- Status
- active
- SOC 2
- yes
- GDPR
- yes
- Data residency
- unknown
- External rating
- —
- Last verified
- May 2026
Reviews
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