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Prefix Caching vs Recomputed Prompts: The Hit-Rate Break-Even

Most production prompts begin with the same few thousand tokens: a system instruction, a policy block, a schema, a handful of examples. recomputed prompt prefixes pays the full prefill cost for that block on every request. shared prefix caches keeps the resulting key-value tensors in accelerator me…

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  1. 2026-11-08 23:37 · DEV Community — AI
    Prefix Caching vs Recomputed Prompts: The Hit-Rate Break-Even

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