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Unverified60% confidenceFactExact time

Claude的上下文窗口可达200K tokens，但随着对话累积，早期信息的注意力权重会逐渐衰减，即学术界所说的'Lost in the Middle'现象

2

Sources

60%

Confidence

Medium-term (~90 days)

Relevance

7/2/2026

First Seen

Valid until: 9/30/2026

Sources

Claude Code进阶：从实习生到架构师的五大硬核策略

bilibiliAISolo大西瓜6/21/2026

Related Claims

Verified研究表明当上下文过长时，模型对中间部分信息的注意力会显著下降，即"Lost in the Middle"现象73% similar Unverified斯坦福大学 2023 年论文《Lost in the Middle》发现模型对上下文窗口中间位置信息的关注度显著低于开头和结尾，呈现 U 型注意力分布67% similar UnverifiedWhen Claude Code's context window approaches capacity, earlier conversations get compressed or discarded67% similar

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https://kongchang.com/claim/41839

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curl https://kongchang.com/api/v1/knowledge/claims/41839

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get_claim(id=41839)