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Mr_Salio: Claude Opus 5.5 tops Artificial Analysis Intelligence Index, surpassing Fable 5.1 and GPT-6 Astra
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In a post on X, user Mr_Salio announced that Claude Opus 5.5 has achieved the number one position on the Artificial Analysis Intelligence Index. The post claims that Opus 5.5 outperformed both Claude Fable 5.1 and GPT-6 Astra in the ranking, using informal language to describe the competitive result. Additionally, the post asserts that Opus 5.5 is significantly cheaper than both competing models. The announcement includes a link to the Artificial Analysis website for further details. The post attributes the ranking to the Artificial Analysis Intelligence Index, an external benchmark, and presents the information as a factual development in the AI model landscape. No further context or methodology is provided in the post itself.
Source report
Claude Opus 5.5 has secured the #1 position on the Artificial Analysis Intelligence Index.
The model has outperformed both Claude Fable 5.1 and GPT-6 Astra in the rankings.
Additionally, Opus 5.5 is significantly more cost-effective than both competing models.
Source
Source
Mr_SalioNeutral / independent
Part of this Story
Anthropic launches Claude Opus 5.5 with Fable 5.1-level performance at 40% lower cost