Build a Real-Time Voice AI Agent with OpenAI Realtime API & Twilio in 2026
Production voice AI agents demand sub-200ms round-trip latency across WebSocket audio streams. This guide architecturally decomposes the OpenAI Realtime API + Twilio Media Streams pipeline, delivering a copy-pasteable multi-file implementation with circuit breaker fallback, VAD tuning, and enterprise-grade audio caching.