Voice agent latency: model or network? Developer proposes four-timestamp measurement method

stoickkk · reddit · 2026-08-14

A developer argues that teams often blame model latency for voice agent delays, but network may be the bottleneck. He proposes logging four timestamps per turn: audio leaves client, STT final/first partial, LLM first token, TTS first audio, with transport in its own bucket, to accurately pinpoint where slowdowns occur.

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