How to Deploy Retell AI Docs on Railway: My Experience with Vapi and Twilio

Dev.to AI
Generative AI

How to Deploy Retell AI Docs on Railway: My Experience with Vapi and Twilio TL;DR Deploying Retell AI on Railway breaks when you don't isolate Vapi webhooks from Twilio callbacks. This guide shows how to build a production voice agent that handles both platforms without race conditions. Stack: Retell AI + Vapi for orchestration, Twilio for PSTN routing, Railway for containerized hosting with environment variable management. Result: sub-500ms latency, zero dropped calls, automatic scaling.