Runtime Architecture

Core Path

Audio in -> VAD / denoise -> STT -> LLM -> TTS -> audio out

Key Properties

• Single-loop reactor for predictable turn handling
• Streaming-first orchestration for low latency
• Policy and hook extension points for interruption, idle, and hangup behavior
• Provider-agnostic interfaces for STT, LLM, and TTS

Main Runtime Building Blocks

• reactor/*: turn lifecycle, timers, policies, input/event handling
• audio_ml/*: VAD, denoiser, smart-turn models
• server/*: websocket and telephony transport handlers
• session.rs: config model for per-session behavior