Unverified50% confidenceFactExact time
Prompt 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
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/15/2026
First Seen
Valid until: 10/13/2026(expired)
Sources
Related Claims
UnverifiedAnthropic'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.84% similarUnverifiedPrompt 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76% similarVerifiedAnthropic的Prompt Caching功能允许将重复出现的长上下文缓存在服务端，缓存token的计费价格仅为标准输入价格的10%74% similarUnverifiedOpenAI launched the Prompt Caching feature in 2024; when the prompt prefix is completely identical and exceeds the 1,024-token threshold, the KV Cache is reused, and the cached portion is typically billed at 25% of the original price or even lower.72% similarUnverifiedAnthropic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71% similar
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