Expired50% confidenceDecision RuleExact time
For long-context agentic workflows that repeatedly read the same large context (such as code assistants and document Q&A), Claude Opus 5.5's $0.20 cache read price may surpass seemingly cheaper competitors on actual bills.
1
Sources
50%
Confidence
Short-term (~14 days)
Relevance
9/26/2026
First Seen
This claim has expired. It is kept for the record and no longer describes the current state.
Valid until: 10/10/2026(expired)
Sources
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Related Claims
UnverifiedThe cache read mechanism retains the KV cache for recurring long prompt prefixes, charging at an extremely low rate upon a cache hit; the leaked cache read price for Opus 5.5 is approximately 1/20 of the input price.68% similarUnverifiedAn Agent blindly exploring the file system stuffs useless material into the context window, incurring the dual cost of token economic expense and degraded reasoning quality.62% similar
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