By César Murga · Facts verified 26 October 2026 · Prices checked against vendor pages
Synthflow: Enterprise voice AI platform for automated phone calls, with in-house telephony and contracts starting at $30,000 per year.
Synthflow is an enterprise voice AI platform for automating phone calls, built on its own in-house telephony network. The vendor says it powers over 65 million voice calls every month in more than 30 countries, and reports 500M+ customer calls and 99.99% uptime. Pricing is enterprise-only: contracts start at $30,000 annually, with final pricing scoped around call volume, concurrency, telephony setup, integrations, security needs, and launch support.
What is Synthflow?
Synthflow pitches itself as 'the only end-to-end Voice AI platform with in-house telephony'. Agents are designed in a visual Flow Designer, tested in a Test Center with simulated calls, launched over Synthflow's own telephony network, and monitored with Auto-QA — a lifecycle the vendor calls the BELL Framework (Build, Evaluate, Launch, Learn). The platform also covers chat, SMS and other channels, connects to CRMs and contact-center systems, and is certified across SOC 2, HIPAA, PCI DSS, and GDPR, according to the vendor.
How much does Synthflow cost?
Here are Synthflow’s plans as published on its pricing page on 26 October 2026.
| Plan | Price | What you get |
|---|---|---|
| Enterprise | From $30,000/yr | Custom contract scoped around call volume, concurrency, telephony setup, integrations, security needs, and launch support. Includes enterprise SLA, Synthflow Native Telephony or SIP trunking, custom concurrency planning, CRM and contact-center integrations, MSA/DPA support, and implementation, onboarding, testing, training, and launch support. |
What are Synthflow’s key facts?
- Enterprise contracts start at $30,000 annually, per the pricing page.
- Synthflow says it powers over 65M+ voice calls every month in 30+ countries.
- The homepage cites 500M+ customer calls, 4M+ hours saved, and 99.99% uptime.
- Synthflow runs its own telephony network and also supports SIP trunking or approved enterprise telephony.
- The vendor states its infrastructure is certified across SOC 2, HIPAA, PCI DSS, and GDPR.
Who is Synthflow best for — and who should skip it?
Good fit
- Enterprises automating high-volume inbound and outbound phone calls
- Call centers and BPOs handling tier-1 support and overflow calls
- Teams needing voice AI that integrates with existing telephony, SIP, or PBX setups
Look elsewhere if you need
- Small businesses or low budgets — contracts start at $30,000 per year
- Teams that want self-serve or free-tier pricing
- Non-voice workflow automation
Our verdict on Synthflow
Synthflow is an enterprise-only voice AI platform with its own telephony network; the $30,000 annual entry price makes it a fit for high-volume call operations, not small teams.
Hands-on note: this profile is built from Synthflow’s own published pages. Our hands-on test notes will be added here after testing.
Categories: Customer support agents, Enterprise agent platforms, Voice & phone agents
