This is a partial translation of content.
https://www.anthropic.com/news/fable-mythos-access
The U.S. government has issued export control guidelines ordering all foreign nationals, regardless of whether they are inside or outside the United States, to cease all access to Fable 5 and Mythos 5 on the basis of national security. This includes foreign national employees of Anthropic. As a practical consequence of this order, we must abruptly disable Fable 5 and Mythos 5 for all customers in order to comply with regulations. Access to all other Anthropic models is not affected.
We received the directive from the government today at 5:21 p.m. (U.S. Eastern Time). The letter did not contain specific details about the national security concerns. From what we understand, it appears the government believes it has identified methods to bypass or so-called 'jailbreak' Fable 5. We reviewed a demonstration identifying a small number of already-known minor vulnerabilities using this specific technique. These vulnerabilities all appear to be relatively simple in nature, and it has been confirmed that other publicly available models can also discover them without workaround. [……]
As we have stated publicly, we believe the government should have the authority to prevent unsafe deployment within transparent, fair, clear, and technically fact-based legal procedures. However, this action does not follow those principles. We apologize for the inconvenience this suspension causes you, our customers. We believe this matter stems from a misunderstanding, and we are working to restore access as quickly as possible.
https://x.com/AnthropicAI/status/2065597531644743999
