Unverified50% confidenceFactExact time
Anthropic's prompt caching only takes effect when the prefix is exactly the same, and cache entries last only 5 minutes by default.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/14/2026
First Seen
Valid until: 1/12/2027
Sources
Related Entities
Related Claims
UnverifiedAnthropic的Claude提示缓存要求严格的前缀匹配，缓存有效期为5分钟，频繁使用可延长至1小时76% similarUnverifiedCache entries have a validity period of approximately 5 minutes (default) to 1 hour (extendable), after which they are treated as cache misses.70% similarUnverifiedThe optimization of reducing the cache from 1 hour to 5 minutes does not apply, because under the subscription model 1 hour is already the default.69% 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.64% similarUnverifiedClaude Code's fast cache is retained for only one hour, after which the entire conversation needs to be reprocessed62% similar
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