Expired50% confidenceFactExact time

Anthropic's Prompt Caching requires that prefix content be byte-for-byte identical and meet a minimum length threshold of approximately 1,024 tokens, delivering approximately a 90% token discount.

1

Sources

50%

Confidence

Medium-term (~90 days)

Relevance

7/15/2026

First Seen

Valid until: 10/13/2026(expired)

Sources

Render Code as Images and Send to Claude — Cut API Costs by 70%

Related Claims

UnverifiedPrompt Caching是Anthropic于2024年推出的服务端优化机制，实现约90%的Token折扣，要求前缀字节完全一致且达到约1024 Token的最低长度阈值84% similar UnverifiedPrompt Caching在提示词前缀完全相同且超过约1024 token阈值时命中，缓存token通常按原价的25%甚至更低计费77% similar VerifiedAnthropic's Prompt Caching feature can reduce the input cost for repeated prefixes by approximately 90%.76% similar UnverifiedAnthropic的Prompt Caching功能对请求中的固定前缀部分若能复用缓存，则对相应Token给予折扣72% similar

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Stable URI

https://kongchang.com/claim/517918

API

curl https://kongchang.com/api/v1/knowledge/claims/517918

MCP

get_claim(id=517918)