Your Voice Agent Does Not Have One Latency: Build a Conversation SLO “Sub-50 ms” can be a true measurement and a useless production claim at the same time. A team may measure a fast inference kernel, a local voice-activity detector, or the first token from a model and then present that number as the latency of a phone conversation. The caller experiences something else: carrier setup, jitter buffering, speech detection, end-of-turn judgment, transcription, retrieval, tool execution, gener...