Unverified50% confidenceFactExact time
Prompt caching has a TTL limit, and after a long period of idleness it needs to be warmed up again.
1
Sources
50%
Confidence
Long-term
Relevance
10/15/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedThe cache is not permanently valid; providers usually have a TTL of a few minutes to an hour, and the hit rate fluctuates with user behavior.76% similarUnverifiedThe cache TTL for the subscription version can stay warm for one hour, while the API call mode defaults to expiring after five minutes.76% similarUnverifiedAnthropic's prompt caching lives for about five minutes by default (TTL), each hit refreshes the timer, and the cache expires if there is no request beyond its lifetime.69% similarUnverifiedDNS TTL is typically set to 300–86400 seconds; a longer TTL reduces upstream query pressure but slows the propagation of changes.66% similar
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