Unverified50% confidenceFactExact time
Caching has a minimum token-length threshold, so short prompts cannot trigger caching.
1
Sources
50%
Confidence
Long-term
Relevance
10/19/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedPrompt caching cannot help bypass the 100,000-token billing tier line, because the billing tier depends on the total token count of the prompt rather than the incremental amount that misses the cache; the only effective way to avoid it is to shorten the prompt itself.75% similarUnverifiedThe minimum cacheable prompt for both 5.5 models is 512 tokens, caching is enabled by marking with cache_control: {"type": "ephemeral"}, and it remains valid for about five minutes.71% similarUnverifiedThe minimum token count that triggers idle compaction (default 200K) can be adjusted via the CLAUDE_CODE_IDLE_COMPACT_MIN_TOKENS environment variable.69% similarUnverifiedLimiting the ARC cache size only reduces read hit rates and performance; it does not cause data loss or functional anomalies.66% similarUnverifiedThe interrupt vector table is located in the lowest 1,024 bytes of memory and stores the entry addresses of 256 interrupt handlers.66% similar
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