Expired50% confidenceFactExact time
As of currently available public information, the specific version "Opus 5.5" has not been seen in any official release records from Anthropic
1
Sources
50%
Confidence
Short-term (~14 days)
Relevance
9/24/2026
First Seen
Valid until: 10/8/2026(expired)
Sources
Related Entities
Related Claims
UnverifiedRegarding the 'Opus 5.5' version mentioned in the experiment, no authoritative channel has confirmed this naming.78% similarUnverifiedAnthropic has not officially confirmed the existence of Fable 5.274% similarUnverifiedAnthropic has not yet released any official statement or confirmation regarding the inclusion of Fable 5 in the Pro plan.71% similarUnverifiedSpecific benchmark data and technical details for Opus 5.5 have not yet been officially disclosed.65% similarUnverifiedAs of press time, GLM-5.2 has not released any official benchmark data; the high scores circulating online all come from GLM-5 or GLM-5.1.63% similar
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