Artificial Analysis releases Intelligence Index v5 with new private benchmarks
AIArtificial Analysis has released Intelligence Index v5, its biggest update since v4, with 60% of the index now based on private test sets or held-out answers. Claude Opus 5.5 (max) leads at 58, ahead of GPT-6 Astra (max, 57), and the best open weights model, Kimi K3.1 Pro, scores 46 but has not released its weights.
AIWhy it matters.
The release shows how the benchmark mix, private test sets and effort settings change model rankings and cost, which matters for comparing models.
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Artificial Analysis Articles · artificialanalysis.aiPublished · added here
Original title: Announcing Artificial Analysis Intelligence Index v5