Unverified50% confidenceFactExact time
Anthropic has not published Opus 5.5's software engineering benchmark scores, and the model is absent from the 3D benchmark (where Astra scored 95.9).
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
9/29/2026
First Seen
Valid until: 12/28/2026
Sources
Related Entities
Related Claims
UnverifiedThe model version number mentioned in the post (which the author referred to as Opus 5.5) cannot be verified from publicly available information.60% similarUnverifiedThe original source material did not disclose specific benchmark test scores for GPT-6 Astra.60% similarUnverifiedAs of currently available public information, the specific version "Opus 5.5" has not been seen in any official release records from Anthropic59% similarUnverifiedThe official announcement did not elaborate on the specific capability differences between Fable and Astra.59% similar
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