Fable 5 is a nerfed version of Anthropic's Mythos model. Turns out it was actually too nerfed, and the company is sorry.
Fable 5 is a nerfed version of Anthropic's Mythos model. Turns out it was actually too nerfed, and the company is sorry.if it were released without guardrails.
Most of the guardrails, especially the ones designed to prevent users from using Fable to build cyber- or bio-weapons, But one guardrail, aimed at preventing users from using Fable 5 to train other AI models, was invisible, which sparked unusual displays of user outrage. the claude fable 5 nerf for AI research has induced the angriest reaction from AI researchers that I've ever seen in my life“Unlike our interventions for cybersecurity, biology and chemistry, and distillation attempts, these safeguards will not be visible to the user. Fable 5 will not fall back to a different model.
Instead, the safeguards will limit effectiveness through methods such as prompt modification, steering vectors, or parameter-efficient fine-tuning . ” In other words, when Fable 5 prompts showed the telltale signs of a user developing a frontier LLM, instead of doing what it does with prompts about biology, chemistry, or cybersecurity and switching to an inferior model, or simply refusing the request, it waswith the potential to hamper the user’s model development.
Using the model to train another model is against Anthropic’s terms of service, but users still felt like this measure was a violation of users’ trust. Reddit user CheatCodesOf Life: “I wouldn’t use this thing for anything to be honest. A refusal or HTTP-4xx error for content is fair enough, but this is basically taking your money and poisoning your code base.
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