Unverified50% confidenceDecision RuleTime unknown
Conversational AI applications typically require TTFA to be below 300ms; otherwise, users will noticeably perceive a pause.
1
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50%
Confidence
Long-term
Relevance
9/12/2026
First Seen
Sources
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Related Claims
UnverifiedNatural pauses in human conversation typically range from 200 to 500 milliseconds, and if TTS TTFB exceeds this threshold, users will noticeably perceive unnatural latency.72% similarUnverified合规预测式拨号系统需内置实时弃呼率监控，弃呼率以15分钟滚动窗口计算不得超过3%67% similarUnverified流式架构可将端到端首字节延迟（TTFA）从串行叠加的1-3秒压缩至300-500ms量级66% similarVerifiedThe human perceptual tolerance threshold for latency in natural conversation is approximately 300 milliseconds.66% similarUnverifiedUser research conducted by Google in 2023 showed that user satisfaction drops significantly when a chatbot's TTFT exceeds 2 seconds, and the tolerance threshold for code completion scenarios is typically within 500 milliseconds.65% similar
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