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Synthflow

Enterprise voice AI platform for building, testing and running phone agents on its own telephony network.

Synthflow is a voice AI platform that lets companies build AI agents to answer and place phone calls. Synthflow is used by designing a call flow in its visual builder, testing the agent with simulated calls, launching it on Synthflow's telephony or an existing SIP setup, and monitoring conversations to refine later versions.

Best for Enterprises and contact centres that want to automate high volumes of routine inbound and outbound calls while keeping their existing telephony and CRM systems.

Synthflow website home page
Screenshot of synthflow.ai, captured 9 Oct 2026
Platforms
Web, API
Pricing model
Contact sales
Free trial
Yes
API
Yes
Made by
Synthflow AI
Added

Last verified: . Information taken from synthflow.ai.

What is Synthflow?

Synthflow is a voice AI platform for enterprises that automates inbound and outbound phone calls with AI agents. Teams design call logic in a visual Flow Designer, connect APIs, and split complex tasks into subflows that act as specialised agents. A Test Center runs simulated calls to check accuracy and compliance before launch, and after deployment automatic quality assurance and live monitoring review each conversation. Calls run over Synthflow's in-house telephony, which can also connect to a customer's existing SIP trunks, carriers or contact-centre systems such as Cisco, Avaya, Genesys and RingCentral. Agents handle routing, appointment booking, voicemail detection, SMS follow-ups and handoff to human staff, and the same platform covers chat and SMS channels. The company lists over 200 integrations with CRMs and calendars, plus SOC 2, HIPAA, PCI DSS and GDPR compliance.

Key Features

Flow Designer

A visual builder for defining each step of a call, connecting APIs and composing subflows that work as separate agents.

Test Center

Runs simulated calls against an agent to measure accuracy, response quality and compliance before it goes live.

In-House Telephony

Carries calls on Synthflow's own network and can link to a company's SIP trunks, PBX or chosen carriers.

Monitoring and Auto-QA

Reviews live conversations, webhooks and API calls so teams can debug issues and feed findings into the next version.

Integrations

Connects to CRMs, calendars and contact-centre platforms, including HubSpot, Salesforce, Zapier, Cal.com and GoHighLevel.

Omnichannel Agents

Manages agents for voice, chat and SMS from one place, with WhatsApp integration listed among its use cases.

How Synthflow works

  1. Build

    Define the call flow in the Flow Designer and connect the APIs the agent needs.

  2. Evaluate

    Test the agent with simulated calls measured against your KPIs.

  3. Launch

    Deploy the agent over Synthflow's telephony network or your own carrier setup.

  4. Learn

    Use automatic QA and monitoring data from live calls to improve the next version.

Use Cases

Appointment Scheduling
Let an agent book, confirm and follow up on appointments for clinics or service businesses.
Tier-One Support Overflow
Route routine questions and overflow calls to AI agents in a contact centre.
Lead Qualification
Call or receive leads, ask qualifying questions and schedule demos for the sales team.
After-Hours Reception
Answer calls outside office hours, create tickets and route urgent requests.
Order and Account Enquiries
Handle order tracking, billing questions and status updates by phone.

Things to know

Enterprise-scoped pricing
The pricing page describes annual enterprise contracts scoped around volume, concurrency, telephony, integrations and security needs.
Fine-tuning described as upcoming
The site refers to fine-tuning on a company's own call data in the future tense.
Site languages
The website is offered in English and German, and the agents are described as multilingual.

FAQs

What is Synthflow?

Synthflow is a voice AI platform built for automating business phone calls. It lets companies deploy AI agents for inbound and outbound calls with routing, booking and follow-up capabilities.

What is Synthflow used for?

Synthflow is used for customer service, reception, appointment setting, lead qualification and IVR replacement in sectors such as healthcare, retail, financial services and telecom.

Does Synthflow offer a free trial?

Yes. Synthflow's FAQ says you can build an agent for free using templates or your own design, and that launched agents are charged on a pay-as-you-go basis for calls and chats.

How much does Synthflow cost?

Synthflow's pricing page presents an enterprise offering whose final price depends on call volume, concurrency, telephony setup, integrations and support. Contact Synthflow or see the official pricing page for figures.

Does Synthflow have an API?

Yes. Synthflow links to API documentation, and its agents can be connected to external systems through APIs and webhooks.

Can Synthflow integrate with existing tools?

Yes. Synthflow integrates with CRM and ERP systems and services such as HubSpot, Zapier and Google Cloud, and to telephony systems from vendors like Genesys and Avaya.

What happens if a Synthflow agent cannot handle a call?

A Synthflow agent can ask clarifying questions, give an alternative response or transfer the call to a person. Handoff triggers can be set on failed attempts or caller sentiment.

Is Synthflow compliant with security standards?

Synthflow states that it holds SOC 2, PCI DSS, HIPAA and GDPR certifications and provides encryption, audit logs and region-based hosting.

Who it's for

  • Enterprises
  • Contact centers and BPOs
  • Healthcare providers
  • Sales teams
  • Customer support leaders

Tagsvoice agentsphone automationtelephonyappointment bookingIVRcontact center

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