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Prompt caching lets you cache a prefix of your prompt (like a long system prompt or document) so Claude doesn't re-process it on every API call.

Benefits

  • Up to 90% cost reduction on cached tokens
  • Up to 85% latency reduction on first token

Best Use Cases

  • Long system prompts used repeatedly
  • Large reference documents injected into every request
  • Multi-turn conversations with static context

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Reference:

Prompt caching documentation

image for linkhttps://docs.anthropic.com/en/docs/build-with-claude/prompt-caching

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