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OpenRouter adds response caching for identical requests

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OpenRouter adds response caching for identical requests
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// 140d agoPRODUCT UPDATE

OpenRouter adds response caching for identical requests

ANNOUNCEMENTPRODUCTPRODUCT HUNTX

OpenRouter announced response caching for its API, letting developers mark chat, response, message, or embedding requests for cache reuse. Identical calls can now return instantly on cache hits, reducing latency and repeated-token costs for stable prompts, eval loops, and test runs.

// ANALYSIS

Hot take: this is a practical infra upgrade that matters more than it sounds, because repeated LLM calls are one of the easiest ways to burn tokens and time.

  • –It directly cuts cost on deterministic or repeat-heavy workloads.
  • –The feature is developer-friendly: a header opt-in and explicit cache status headers make behavior observable.
  • –This is especially useful for eval loops, regression tests, and prompt experiments.
  • –The main limitation is that caching only helps when requests are truly identical, so it won’t change fundamentally dynamic chat workloads.
// TAGS
openrouterllmcachingapidevtoolinfrastructure

DISCOVERED

140d ago

2026-05-04

PUBLISHED

140d ago

2026-05-04

RELEVANCE

8/ 10

AUTHOR

OpenRouter