Fable 5.5 reportedly dropping this week as AA Intelligence Index shows Anthropic at 49

felpix_ · x · 2026-10-29

Signs point to Fable 5.5 (Anthropic) launching this week. The attached Artificial Analysis Intelligence Index chart shows: Gemini 4 Carbon (high) leading at 59, Claude Opus 5.5 (max with fallback) at 58, GPT-6 Astra (max) 57, GPT-6.1 Sol (max) 55, Claude Fable 5.1 (max with fallback) 49, Kimi K3.1 Pro 46, Muse (max) 43, Grok 4.7 (xhigh) 34, DeepSeek V4.1 Flash 1017 (max) 32, GLM-5.3 (max) 32, MiMo-V2.6-Pro 30. One bar is marked "no publicly available API," suggesting some top scorers aren't yet open. If Fable 5.5 lands, it could challenge for the top spot.

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