Anthropic reported that the directive was communicated at 5:21 PM on June 12 (5:21 AM on June 13, Hanoi time), requiring the company to suspend access to the Fable 5 and Mythos 5 models for “foreign citizens, whether in the US or other countries, including those who are employees of Anthropic.”
This AI startup has currently disabled the two models for all customers to ensure compliance with the directive, but asserts that other models are not affected. Anthropic stated that the US government did not provide details regarding its national security concerns and apologized to customers for the disruption.
“We believe that the US government should have the ability to prevent the deployment of dangerous applications based on a transparent, fair, clear, and technically-based process. This action does not meet those principles,” the company’s statement read.
Logo Claude Fable 5. Photo: Anthropic
Logo Claude Fable 5. Photo: Anthropic
The surprising move came just days after Anthropic announced Fable 5 and Mythos 5, two models that the company advertised as the most advanced according to various industry metrics. They are built on the Claude Mythos Preview platform, which had previously raised concerns among US officials due to its advanced cybersecurity capabilities.
This also marks the latest conflict between Anthropic and the US government following a dispute with the Pentagon earlier this year. The US Department of Defense stated at that time that Anthropic posed a risk to the supply chain, meaning the company was viewed as a threat to national security. This designation is typically reserved for foreign adversaries of the US, requiring defense contractors to certify that they do not use the Claude model in contracts with the military.
Anthropic has sued the Trump administration to reverse this decision, and the litigation process is still ongoing.
Diep Anh (According to Reuters, CNBC)
