Prompt Caching Explained: How It Works on Claude, OpenAI, Bedrock and Gemini (and Why Your Cache Isn't Hitting)
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Prompt caching lets an LLM provider reuse the work it already did on the beginning of your prompt. When a new request starts with exactly the same tokens as a recent one (the same tools, system prompt, and reference documents), the provider reads that prefix from cache instead of processing it agai…
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- 2026-10-28 20:30 · DEV Community — AI
Prompt Caching Explained: How It Works on Claude, OpenAI, Bedrock and Gemini (and Why Your Cache Isn't Hitting)