The Realtime API is aimed at builders who need conversational voice with near-human turn-taking, not batch transcription.
Practical details covered: establishing a WebSocket session, streaming audio frames, and invoking tools while the model is still speaking.
Why it matters: product teams can prototype voice UX without stitching STT, LLM, and TTS into a fragile pipeline.
Tools mentioned include session configuration for voice, VAD settings, and server-side event handlers for function results.
Apply this by starting with a narrow assistant (support FAQ or coding copilot) and measuring latency and cost per minute before scaling.