Anthropic to disable its most advanced AI models after US order limiting foreign access
Anthropic will disable its top AI models after a US order barred foreign nationals from accessing them, citing security risks.
Intelligence analysis by GPT-5.4 Mini
The US government ordered Anthropic to cut off foreign access to its most advanced models over national security concerns, and Anthropic says it must disable them for all users to comply. The clash deepens tension over AI safeguards, export controls and how powerful models should be governed.
A powerful AI tool was being used like a very sharp kitchen knife. The US government said foreigners could not use it because it might help find weak spots in computer systems, so the company has to turn it off for everyone while it argues back.
Analysis
What happened
Anthropic said it received a US export control directive telling it to suspend access to its Fable 5 and Mythos 5 models for foreign nationals. The company said the practical result is that it must abruptly disable the models for all customers in order to comply.
Why the government acted
According to Anthropic, officials believe there may be a way to bypass a safeguard meant to stop Fable 5 from being used to identify software vulnerabilities. Anthropic said it was given only verbal evidence of what it called a potential narrow, non-universal jailbreak, rather than detailed written findings.
Anthropic’s response
The company disputed the need to pull the models entirely, arguing that a possible narrow jailbreak should not justify recalling a commercial model already deployed to many users. It said other Anthropic models will not be affected and that it is working to restore access as soon as possible.
Bigger backdrop
The move comes amid a strained relationship between Anthropic and the US government. Earlier this year, the company refused to let its models be used for domestic surveillance or fully autonomous weapons systems, after which it was placed on a supply-chain blacklist. The order also lands as Anthropic has been moving toward an IPO and as it had recently called for stronger US oversight of AI.
The article frames the issue as part of a wider fight over AI risk: how to judge jailbreaks, how much proof regulators need, and whether export controls should now apply to the models themselves rather than just the chips and tools behind them. The Pentagon’s chief information officer backed the national-security priority, saying some concerns matter more than revenue or valuation.
Key points
- The US government ordered Anthropic to suspend foreign access to Fable 5 and Mythos 5.
- Anthropic says it must disable the models for all users to comply.
- Officials reportedly fear a safeguard could be bypassed to help identify software vulnerabilities.
- The company disagrees and says it received only verbal evidence of a possible narrow jailbreak.
- The dispute adds to tensions between Anthropic, regulators and the US government over AI safety and national security.
If Anthropic and the government resolve the dispute, the company may restore access and keep shipping its most advanced models. Clearer rules could also make it easier for AI firms to know what safety checks are required before launch.
If the order stands, Anthropic could lose momentum with one of its newest products and face more limits on global distribution. The case could also signal broader restrictions on advanced AI models, increasing compliance burdens and uncertainty for the whole sector.
