Voice AI Latency Budget Calculator
Pick your stack. See exactly where the milliseconds go — and whether your voice agent will feel real-time or feel broken.
Your Stack
Sentence-level streaming
Off = wait for full LLM response + full audio before playback starts
Your End-to-End Latency
480ms
Feels Real-Time
Under 500ms — users generally perceive this as instant response.
Most unoptimized production demos run 2.4–3 seconds end-to-end. You're seeing what changes that.
This is a rule-of-thumb tool for reasoning about tradeoffs, not a substitute for profiling your actual deployment. Figures are representative estimates drawn from typical published latency ranges per category — streaming ASR benchmarks, chunked-inference TTS figures, common LLM time-to-first-token numbers — not a guarantee for your exact hardware, provider, or network conditions.
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