Opus 5.5 scores 58 on the Artificial Analysis Intelligence Index

Opus 5.5 reaches 58 on the Artificial Analysis Intelligence Index, while Fable 5.1 and GPT-6 Astra both sit at 53.

Dan

@DanDr1sArchived 2026.09.23Originally posted 2026.09.23

Opus 5.5 scores 58 on the Artificial Analysis Intelligence Index

Dan @DanDr1sOriginally posted 2026.09.23

🚨 Opus 5.5 JUST HIT 58 ON THE ARTIFICIAL ANALYSIS INTELLIGENCE INDEX. The next highest score in this chart is 53. Fable 5.1: 53. GPT-6 Astra: 53. What did Anthropic feed this thing 😭

x.com/dandr1s/status/2102440773195346277Archived 2026.09.23 10:28

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