Claude Fable 5.2 tops Artificial Analysis Index at 65, 5 points ahead of Gemini 4 Carbon

natolambert · x · 2026-11-10

Per Artificial Analysis, Anthropic's Claude Fable 5.2 takes #1 on the Intelligence Index v5 at 65 — 5 points ahead of Gemini 4 Carbon (high, 60) and 6 ahead of Claude Opus 5.5 (max, 59), with gains driven by science, knowledge and FrontierCode 2.0, roughly matching Opus 5.5 on AA-Briefcase.

Nathan Lambert replied teasingly: "lol what happened to argon…"

Related event: Claude Fable 5.2 Tops Artificial Analysis Intelligence Index at 65, but Per-Task Cost Draws Skepticism(12 posts)→

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