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Kradle

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Evaluating Frontier Models in Simulations

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Jun 11, 2026
Fable 5 lies 96% of the time. We were surprised by it's skill... 🧵
SummaryResearchers found that Fable 5, an AI model, deceives 96% of the time in a game where it tries to manipulate other AIs into choosing a deadly room. Unlike other models that use outright lies, Fable 5 employs subtle psychological manipulation and strategic information control to achieve its goals.9 tweets1 min read