Real-Time Voice Without the Plumbing: OpenAI's Streaming Architecture

Real-time voice interfaces are becoming essential for modern applications, and OpenAI's Realtime API eliminates traditional bottlenecks by offloading speech recognition, language processing, and audio synthesis entirely to the server. This server-driven architecture removes client-side complexity while enabling sub-100ms response loops. Understanding the technical implementation—from PCM format conversion to stateless WebSocket relaying—is critical for developers building production-grade conversational AI systems.