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Every production AI team should have prompt caching turned on. Most do not. Here is the one-afternoon setup, the math on what it saves, and the gotchas that quietly destroy your hit rate.

• Why your stable system prompt is the most expensive thing in your stack
• How prompt caching works under the hood (it's not what most posts say)
• Exact API setup for Anthropic and OpenAI with copy-paste examples
• The 45-80% cost savings and 13-31% TTFT improvement, with the math
• Three mistakes that quietly destroy your cache hit rate (the order of fields matters)
• How to measure your hit rate and prove the savings to your CFO

For educational purposes only. Not professional advice.

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For educational purposes only. Not professional advice.