Unverified60% confidenceFactExact time
超长上下文中存在「lost in the middle」效应，即模型对序列头部和尾部内容记忆更强而对中间段落关注度下降，该现象由斯坦福研究者命名
2
Sources
60%
Confidence
Long-term
Relevance
7/13/2026
First Seen
Sources
AI一周复盘：四大厂集体降价，Copilot付费转化率仅4.5%
redditr/artificial7/11/2026
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