Unverified50% confidenceFactExact time
Prompt Caching is a mechanism provided by large-model service providers such as the Anthropic API: when the request prefix is exactly the same as that of a previous request, the server reuses the already-computed KV Cache, the cache-hit portion is billed at 0.1 times the input price, and the first cache write is billed at 1.25 times.
1
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50%
Confidence
Long-term
Relevance
10/19/2026
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Related Claims
VerifiedIn the Prompt Cache mechanism, when the prefix content of an API request is identical to a previous one, the system reuses the already-computed KV cache to complete cache reads at a lower price, while cache write is the billing item for the first time content is written into the cache.80% similarUnverifiedPrompt Caching refers to LLM service providers caching repeatedly occurring prefix content in requests, with cache hits reducing computational cost and latency.78% similarVerifiedThe caching mechanism is technically commonly referred to as KV Cache or Prompt Caching78% similarUnverifiedPrompt 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.76% similarUnverifiedPrompt caching is a capability of the Anthropic API: when the prefix portion of a request is exactly identical to the previous request, the server can reuse the already-computed intermediate state and skip redundant prefill computation.73% similar
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