Distinguish provider-specific prompt-caching controls and signals from general cache-friendly prompt design practices.
Place each statement in the right bucket. OpenAI signal Anthropic control Gemini implicit General hygiene Inspect cached_tokens in prompt token usage details Use cache_control breakpoints for independently cacheable sections Implicit caching is enabled by default on supported newer models Put large common contents at the beginning of the prompt Keep timestamps and request IDs after the reusable prefix Watch cache-hit token counts in usageMetadata or usage_metadata Multiple breakpoints can let sections cache independently Prompts under the documented minimum show zero cached tokens
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