Voice AI latency: Why milliseconds decide human-like calls
liit_upp · reddit · 2026-09-02
The post highlights latency as the most underestimated metric for voice AI agents. Even with realistic voices and strong LLMs, noticeable pauses make conversations feel artificial. Human calls involve interruptions, quick responses, and mid-sentence changes, requiring production voice agents to coordinate ASR, intent processing, LLM generation, tool calls, TTS, and telephony in real time. The author cites Feather AI as an example focusing on the underlying infrastructure for real-time conversations. The discussion seeks the latency threshold where agents start feeling noticeably non-human.
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