Unverified50% confidenceFactExact time
Prompt Caching is an optimization across requests, users, and conversations: as long as the prompt prefixes of different requests are completely identical, the corresponding KV results can be shared globally.
1
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50%
Confidence
Long-term
Relevance
10/12/2026
First Seen
Sources
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Related Claims
UnverifiedPrompt caching reuses already-computed KV cache on the server side and requires the context prefix of the previous request to be identical to the current one.77% similarVerifiedThe 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.77% similarUnverifiedPrompt Caching is suitable for scenarios such as conversational services with fixed system prompts, RAG knowledge-base question answering, tool-calling Agents, and batch standardized processing.77% similarUnverifiedPagedAttention supports multiple requests sharing the KV Cache of the same prefix (Prefix Caching).76% similarUnverifiedConventional KV caching is an optimization within a single request: within the same conversation round, the KV generated from historical messages does not need to be recomputed, and only the newly input content is computed incrementally.72% similar
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