The US government ordered Anthropic to withdraw Fable 5 and Mythos 5, citing national security concerns after Amazon researchers reportedly found a method to bypass Fable 5's safety guardrails. Cybersecurity researchers fired back with an open letter calling the move dangerous, while Anthropic noted the same jailbreaks exist across other AI models. The controversy raises the question of whether the government's intervention is inadvertently amplifying Anthropic's public profile.
The US government compelled Anthropic to withdraw its two newest models, Fable 5 and Mythos 5, citing national security concerns after Amazon researchers allegedly found a way to bypass Fable 5's safety guardrails. Cybersecurity researchers responded with an open letter calling the ban itself dangerous, while Anthropic argued the same jailbreak techniques exist in competing models. Despite the forced pullback, usage numbers appear to show continued demand for the models.