Claude Sonnet 5.5 Reportedly Scores 56 on Artificial Analysis Intelligence Index

thesaraharminta · x · 2026-09-29

A widely shared post claims Claude Sonnet 5.5 scored 56 on Artificial Analysis' Intelligence Index — second only to Claude Opus 5.5, above GPT-6 Astra and well ahead of GPT-6 Sol. The figure is unverified pending official benchmarks.

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