Unverified50% confidenceFactExact time
Prompt Cache本质上是大模型推理架构中KV Cache机制的服务端延伸，缓存Transformer中每个token生成的Key和Value矩阵
1
Sources
50%
Confidence
Long-term
Relevance
7/20/2026
First Seen
Sources
Related Claims
UnverifiedAnthropic's Prompt Caching leverages the KV Cache mechanism in the Transformer architecture to reduce latency and cost by caching the key-value states corresponding to shared prompt prefixes.78% similarUnverifiedThe core principle of prompt caching is cross-request reuse of the KV Cache, where already-computed KV states can be cached and reused when multiple requests share the same prefix.71% similarVerifiedKV Cache通过将已计算的键值对持久化存储，使相同Prompt前缀的后续请求可直接复用，跳过重复的矩阵运算69% similarUnverifiedvLLM的前缀缓存（Prefix Caching）对KV Cache块计算哈希值，当新请求输入前缀与已缓存请求重叠时直接复用物理缓存块，跳过该部分prefill计算68% similarUnverifiedThe KV Cache (Key-Value Cache) mechanism allows API requests sharing the same prefix to reuse already-computed Key and Value vectors, thereby significantly reducing inference costs.68% similar
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