Synthflow
Synthflow: A voice-agent platform for enterprise call operations, with annual Enterprise contracts starting at $30,000. Ranked #31 of 32 in AI Voice Agents by our editors (6.4/10); pricing: Paid; best for large enterprises with a substantial deployment budget.
At a glance
- Editor score6.4 / 10
- PricingPaid
- Best forLarge enterprises with a substantial deployment budget
- Paid from$30,000/yr
- Human handoffYes
- Facts checked19 Sep 2026
Where it wins
- Supports inbound and outbound calling with human transfer and escalation.
- Visual workflows, simulations, monitoring, analytics, and usage tracking.
- Connects telephony systems, CRMs, calendars, APIs, and knowledge sources.
Where it doesn't
- Enterprise contracts start at $30,000 annually.
- Pricing depends on usage, concurrency, telephony, integrations, security, and support.
- Enterprise onboarding and launch support may be more than smaller teams need.
Our verdict on Synthflow
Synthflow is a voice-first platform for building, testing, deploying, and monitoring AI agents that handle business calls. Its use cases include customer support, appointment scheduling, lead qualification, call routing, reminders, and data collection. Enterprise operations, contact centers, and businesses managing high call volumes are the intended audience; smaller teams with limited budgets may find the annual entry price difficult to justify.
Call design and operations are central to the product. Teams can configure agents with Prompt Builder and Flow Designer, create multi-step call flows in a visual workflow builder, and simulate calls before deployment. Agents handle inbound and outbound calls, connect through telephony systems, and transfer callers to human teams. Monitoring, analytics, and usage tracking support ongoing oversight. Phone-number purchasing and importing, along with native telephony or SIP trunking, give it a broad call-management scope rather than a narrow automated-answering focus.
According to the vendor's pricing page, the Enterprise plan starts at $30,000 per year, with final pricing depending on usage, concurrency, telephony, integrations, security, and support. The plan includes enterprise SLA and support terms, custom concurrency planning, enterprise security review, and implementation, onboarding, testing, and launch support. Listed integrations include Twilio, Telnyx, RingCentral, Vonage, Asterisk, Cisco, Avaya, Genesys, HubSpot, Salesforce, Zapier, Google Sheets, and Notion. Synthflow is a fit for organizations prepared for a sales-led enterprise contract and deployment process; teams seeking a lower-cost entry point should consider alternatives.
Your product? Our editors can test Synthflow in depth and publish a review, labelled as paid · from $149/mo →
Synthflow pricing
All 1 Synthflow plans and prices →
Synthflow fact sheet
| Free plan | Not verified |
|---|---|
| Paid from | $30,000/yr |
| Inbound calls | Yes |
| Outbound calls | Yes |
| Human handoff | Yes |
| Supported languages | Not verified |
| Concurrent calls | Not verified |
| Custom phone numbers | Yes |
| Deployment | Cloud |
| Platforms | Web |
| Integrations | 13 integrations: Twilio, Telnyx, RingCentral, Vonage, Asterisk, Cisco … |
| Pricing | Paid (source) |
| Website | synthflow.ai |
| Facts checked | 19 Sep 2026 |
Synthflow integrations
Synthflow lists 13 integrations on its own site.
- Twilio
- Telnyx
- RingCentral
- Vonage
- Asterisk
- Cisco
- Avaya
- Genesys
- HubSpot
- Salesforce
- Zapier
- Google Sheets
- Notion
Alternatives to Synthflow
- Retell AIPractical inbound and outbound phone automation with transfers, testing, and analytics.9.4
- ToneA full voice-agent toolkit with free self-hosting and cloud usage priced per minute.9.3
- LiveKit AgentsAn open framework for building realtime voice agents, with optional managed cloud plans.9.2
See all Synthflow alternatives →
Also Ranked In
Synthflow is ranked in 4 of our directories.
Used Synthflow? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used Synthflow for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
Synthflow is listed in our AI Voice Agents directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/synthflow/"><img src="https://www.itechguides.com/best/badge/synthflow.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update