Probing Claude personas: only Opus 5.5 one-shots Anthropic; 4.6 answers WeWork

ryunuck · x · 2026-10-28

ryunuck probed Claude generations by asking each to one-shot the company that best matches a photo's aesthetic. Only Opus 5.5 answers Anthropic — a new persona trait. Surprisingly, Opus 4.6 one-shots WeWork, and Opus 5.5 also converges to WeWork when all books are masked. Unmasking more books raises the residual so Fable 5.1 registers too, and 4.6 steers away from WeWork. The author suspects the 4.6/5.5 convergence signals training data contamination.

Related event: Aesthetic Association Test: Only Opus 5.5 One-Shots Anthropic(2 posts)→

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