Retell AI vs Synthflow: Voice Quality, Setup, and Workflow Control

Retell AI is often stronger for flexible voice-agent implementation, while Synthflow-style tools can be useful for no-code starts. The bigger question is whether your workflow needs custom integrations and monitoring. Decision rules: Use no-code when the call flow is simple and low risk. Use custom implementation when the agent must book, route, update systems, and handle exceptions. Compare real calls, not only dashboard setup speed.