Anthropic names its external alignment evaluators for Fable 5.2 — and one is a mystery
austinc3301 · x · 2026-11-10
Anthropic's Claude account disclosed that Fable 5.2 and Mythos 5.2 performed as well as or better than recent models on most alignment measures, and were tested pre-release by external evaluators: the AI Security Inst, FrontierDesign2, and METR.
User mentalgeorge amplified the disclosure while asking: who exactly is @FrontierDesign2? As one of only three named external evaluators, the little-known org is drawing community curiosity — a transparency thread worth watching.
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