Expired50% confidenceEventExact time
At 12:24 UTC, Anthropic first marked the status as Investigating, confirming a surge in errors on requests to Claude Opus 5.5.
1
Sources
50%
Confidence
Short-term (~14 days)
Relevance
10/12/2026
First Seen
This claim has expired. It is kept for the record and no longer describes the current state.
Valid until: 10/26/2026(expired)
Sources
Related Entities
Related Claims
UnverifiedAnthropic's official status page recorded a service anomaly affecting Claude Opus 5.5, lasting about 23 minutes from the first mark of investigation to the announcement of resolution.73% similarUnverifiedOpus 5是第一个真正你说什么它做什么的Anthropic模型，不确定时会主动提出澄清问题67% similarUnverifiedClaude Opus 5.5 was tested by external evaluation organizations including Frontier Design and METR prior to its release.63% similarUnverifiedClaude Opus 5.5 surpasses Opus 5 and Fable 5.1 on nearly all benchmarks reported by Anthropic, with particular leads in agentic coding and real-world knowledge work.61% similarUnverifiedThe LiveNerf author uses Claude to filter out the subset of questions on which Opus 5.5 is most prone to errors for testing.60% similar
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