tools
Synthflow AI Voice Agent Builder
Synthflow builds AI voice agents for inbound and outbound calls, with visual workflows, telephony, integrations, testing, and monitoring.
Synthflow is a web platform for designing, testing, launching, and monitoring AI voice agents. Teams can create inbound and outbound call flows, connect APIs and business systems, route calls, book appointments, answer questions, and transfer callers to people.
It is used by customer service, sales, operations, healthcare, financial services, and contact-center teams. Agents can also work through chat, SMS, WhatsApp, and website or app widgets. Building is available for free, while live usage and enterprise deployments are billed according to account terms or contract scope.
Features
- Visual Flow Designer for structured, multi-step call logic
- Inbound, outbound, and embeddable Voice Widget agents
- API, webhook, CRM, calendar, and knowledge-base integrations
- Test Center simulations and custom evaluation workflows
- Call recordings, transcripts, logs, analytics, and monitoring
- Human handoffs, SIP transfers, routing, and escalation rules
- Chat, SMS, WhatsApp, and website or app deployment options
- Public API for creating and managing agents
Use cases
- Answer customer-support questions and route complex calls
- Book appointments and send reminders
- Qualify leads and launch outbound campaigns
- Collect information and update CRM records
- Handle after-hours calls and overflow traffic
- Transfer urgent or specialized requests to human teams
Pros
Cons
Pricing
- Starting price
- $30,000 annually
- Pricing checked
- 2026-09-19
Enterprise
$30,000 annually
- Enterprise SLA and support terms scoped in contract
- Synthflow Native Telephony, SIP trunking, or approved enterprise telephony
- Custom concurrency planning, routing, escalation paths, handoffs, and fallback logic
- CRM, calendar, contact-center stack, webhook, API, and knowledge-source integrations
- MSA/DPA support, data handling review, workspace controls, and enterprise security review
- Implementation, onboarding, testing, training, launch support, and ongoing optimization