Expired50% confidenceFactExact time
Content duration on platforms such as TikTok and Instagram Reels has been compressed from 15 seconds to 7 seconds, and the first-3-second hook has become an ironclad rule of creation.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/7/2026
First Seen
Valid until: 10/5/2026(expired)
Sources
慢内容崛起：一条推文引发的注意力经济与内容创作反思
twitterjxnlco7/6/2026
Related Claims
VerifiedThe average video length on TikTok was compressed from 60 seconds to 15 seconds.78% similarUnverifiedThe algorithms of short-video platforms such as YouTube Shorts, TikTok, and Instagram Reels generally favor content between 15 and 60 seconds, with completion rate being one of the core ranking metrics.72% similarUnverified缓存命中时prefill阶段可跳过已缓存部分，TTFT可从数秒压缩至毫秒级66% similar
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