Unverified50% confidenceFactExact time
User 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.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
8/30/2026
First Seen
Valid until: 11/28/2026
Sources
Related Entities
Related Claims
VerifiedThe industry-recognized threshold for natural conversation is an end-to-end latency of 500 milliseconds or less; beyond this threshold, users will noticeably perceive a pause.73% similarUnverifiedNatural pauses in human conversation typically range from 200 to 500 milliseconds, and if TTS TTFB exceeds this threshold, users will noticeably perceive unnatural latency.70% similarUnverifiedIn digital human scenarios, the WebRTC end-to-end latency typically needs to be kept within 500 milliseconds to ensure a natural and smooth interactive experience.70% similarUnverifiedThe acceptable response gap in human conversation is approximately 500 milliseconds; exceeding 1 second produces a noticeable lag and is a hard threshold for user experience in telephony products.68% similar
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