Prompt Caching: First vs Repeat Request Costs Measure prompt-cache cost with a controlled request series: the first request creates or prepares a cached prefix, later requests try to read it, and a control request changes the prefix to force a miss. Compare the usage categories and actual charge...

Source: [Dev.to](https://dev.to/bettertoken_ai/prompt-caching-first-vs-repeat-request-costs-3o59)

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