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OpenRouter·Apr 30, 2026·v1.0·tools

OpenRouter Response Caching

OpenRouter's Response Caching feature caches identical API requests so responses are returned instantly at zero cost — saving time and money on tests, agent retries, and repeated queries.

APICachingCost OptimizationAI InfrastructureDeveloper Tools
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overview

OpenRouter's Response Caching feature caches identical API requests so responses are returned instantly at zero cost — saving time and money on tests, agent retries, and repeated queries.

key features
  • 01Zero cost for cached identical requests
  • 02Instant response retrieval via X-OpenRouter-Cache header
  • 03Available to all OpenRouter users for free
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