Artificial Analysis: Opus 5.5 leads its new index at 58
Intelligence Index v5, dated October 27, puts 60% of the score on private or held-out tests. Artificial Analysis ranks Claude Opus 5.5 (max) at 58 and GPT-6 Astra (max) at 57.
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Intelligence Index v5, dated October 27, puts 60% of the score on private or held-out tests. Artificial Analysis ranks Claude Opus 5.5 (max) at 58 and GPT-6 Astra (max) at 57.