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Prompt Caching, Explained: How Claude Reuses Your Prompt Prefix — and When It Doesn't Pay Off

If you build anything that talks to Claude more than once — a chatbot, a coding agent, a document Q&A tool — you are probably paying to process the same text over and over again. Every API request is stateless: the model re-reads your system prompt, your tool definitions, and the whole conversation…

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  1. 2026-11-04 06:41 · DEV Community — AI
    Prompt Caching, Explained: How Claude Reuses Your Prompt Prefix — and When It Doesn't Pay Off

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