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Anthropic is reversing its decision to stealthily degrade responses from its Mythos-class model, Claude Fable 5, by replacing hidden throttling with transparent fallbacks to its previous flagship model. This shift addresses critical concerns regarding the opacity of safety guardrails that previously hindered researchers and competitors from utilizing the model for distillation and other high-risk tasks. The move signals a broader industry pivot toward explicit transparency in AI safety mechanisms, even if it results in increased query refusals.
Anthropic apologizes for invisible Claude Fable guardrails

Anthropic has apologized for stealthily throttling its new AI model, Claude Fable 5, with hidden guardrails that undermine both researchers and rivals using it to develop competing systems. The company says it is reversing course and will be more transparent about when the restrictions kick in, even if that means Fable refuses more queries. Fable is the first widely available model in Anthropic's Mythos class of AI systems, a group the company has spent months warning are too dangerous for public release. Anthropic says it has addressed some of those risks by launching Fable with safeguards that prevent it from responding to certain "high-r … Read the full story at The Verge.
Anthropic has apologized for stealthily throttling its new AI model, Claude Fable 5, with hidden guardrails that undermine both researchers and rivals using it to develop competing systems. The company says it is reversing course and will be more transparent about when the restrictions kick in, even if that…
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