On June 9, Anthropic released Fable 5, a restricted version of its Mythos 5. Anthropic said Fable 5 had been released with safeguards designed to prevent misuse in cybersecurity attacks, while the full Mythos 5 was kept under tighter controls because of its more advanced capabilities. On June 12, Anthropic received a US government export control directive. The directive suspended access to Fable 5 and Mythos 5 for foreign nationals, including Anthropic employees. Anthropic said the practical effect was that it had to disable the models for all customers to ensure compliance. The issue appears
Claude Fable 5 is back — but its shutdown shows the future of AI may be government-approved… Meta also explained that its teams are working on evolving its measures — so hopefully it’ll find a way to counter the techniques modders have developed to disable the smart glasses' safety light. …
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… The issue appears to have centered on whether it was possible to jailbreak Fable 5 and bypass its guardrails. A jailbreak is essentially a method of persuading an AI model to bypass its safety restrictions . …
… That’s why a dual-layer approach is essential to ensure AI safety. Indeed, it is particularly critical as AI is encouraged to be more creative and find its own solutions, as in the ROME AI example, because the risks of it acting in undesirable and dangerous ways increase. …
… Part of that price gap reflects a different safety model. Chinese open-weight systems generally come with lighter default guardrails than Western frontier models, so more responsibility for testing, misuse prevention, and compliance moves to the company deploying them. …