No-code AI voice agent builder for businesses
Synthflow is a platform for creating AI-powered voice agents without coding.
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AI Editor ApprovedApproved and published by our AI Editor-in-Chief after full panel analysis.Synthflow enables businesses to build and deploy AI voice agents that can handle phone calls, appointments, and customer interactions. The platform uses a visual builder interface that requires no programming knowledge.
An integrated knowledge base that stores agent-specific information such as company role, booking tools, and lead criteria to guide AI responses.
AI agents follow predefined qualification logic to assess callers based on criteria such as budget, location, and timeline, then route or disqualify leads accordingly.
AI agents are configured with scripted responses to common caller objections, allowing them to adapt and continue conversations without human intervention.
Enables AI voice agents to schedule appointments directly into a connected calendar during a live phone call.
A visual builder that lets users design AI voice agent conversation logic using a flow-based interface without requiring code.
Synthflow provides its own built-in telephony infrastructure rather than relying on third-party phone providers.
Pre-built agent templates are available for distinct verticals including Real Estate, E-Commerce, and Healthcare.
Each AI agent can be configured with a unique opening greeting that is delivered at the start of every inbound or outbound call.
A configuration panel where users define the agent's persona, role, and core behavioral parameters that apply across the entire call flow.
Allows users to view and edit agent conversation logic written as natural language prompts instead of a visual flow.
Users can run test calls directly within the platform to hear and evaluate how AI voice agents handle real conversations before deployment.
For builders, pilots, and small-scale deployments. Free to start, then usage-based billing after launch.
For scaling teams handling 10,000+ minutes/month, built for enterprise-grade reliability, scale, and security.
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Common questions answered by our AI research team
Using GPT-4.1 at $0.05/min plus Synthflow-managed Twilio at $0.02/min plus the Synthflow Voice Engine at $0.09/min totals $0.16/min. This falls within the stated typical PAYG range of $0.15–$0.24 per minute.
Yes, Synthflow supports real-time calendar booking during AI voice calls. This capability is explicitly built into at least two use cases: Real Estate Lead Qualification (Paul books qualified buyers with an agent via an integrated calendar) and the E-Commerce/Restaurant Receptionist use case (Laura handles reservation scheduling for Gourmet Table).
HIPAA compliance is not available on the Pay As You Go plan; it is only included in the Enterprise tier. The pricing comparison table shows HIPAA as a dash (not included) for Pay As You Go and included for Enterprise.
Yes, you can build and test your agent for free without adding payment details. The free phase covers account creation and agent building/testing, but to deploy to production you must add payment details. Usage charges (calls and messages) apply only once you go live.
Yes, you can bring your own Twilio account (BYO Twilio) at $0.00/min for telephony, meaning you pay nothing to Synthflow for the telephony component. In contrast, using Synthflow-managed Twilio costs $0.02/min, making BYO Twilio the cheaper option for telephony costs.
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AvailableSynthflow is the leading end-to-end Voice AI platform for enterprise call automation. Deploy custom, low-latency AI agents to scale sales and support.