Some quick takes:
(1) Wow things are getting real.
(2) The government's order focusing on prohibiting transfer to foreign nationals (even e.g. those living in the US, our close allies who help evaluate model safety in the UK, individuals who work at frontier labs like Anthropic) seems remarkably destructive, though is partially a result of the government using older legal authorities that were not designed for this kind of technology.
(3) If you believe (as I do) that AI has profound ramifications for national security, then assuming the government will sit back and do nothing and tolerate explanations like "well jailbreaking is a hard technical problem" for cyber capabilities that used to be the crown jewels of the NSA, is not tenable. If this is how the government reacts to the current level of system capabilities in 2026, how do you expect them to react to whatever is possible in 2028? However, it is extremely important that the authorities that the government uses are legible, transparent, have opportunities for appeal, and are narrowly targeted. Those legal authorities do not currently exist, and in their absence, the government will reach for metaphorical sledgehammers instead of scalpels.
(4) For that reason, it's extremely important that we create regulatory structures that are transparent and give recourse in the event that the government is overstepping or acting in an arbitrary manner. The alternative to passing such laws is not no regulation, it is regulation left primarily to national security authorities that are increasingly and evidently not fit for purpose.
The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.
The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.
Access to all other Claude models is not affected.
We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.
Read our full statement:
anthropic.com/news/fable-myt…