AI company Anthropic announced on Friday that it has deactivated its latest artificial intelligence models, named Fable 5 and Mythos 5, in compliance with a directive from the Trump administration to prevent their usage by non-U.S. individuals. The move represents a significant step by the U.S. government to limit access to cutting-edge AI models. While Fable was released widely this week, access to the more advanced Mythos model is strictly controlled by Anthropic due to cybersecurity concerns.
Anthropic expressed disagreement with the government’s approach, stating that the directive received did not specify any national security issues. The company emphasized the importance of a transparent and fair process based on technical facts to block unsafe deployments. Anthropic referred to the situation as a “misunderstanding” and expressed hopes to reinstate access to the models promptly.
The Commerce Department did not provide an immediate response to requests for comment. This action follows President Trump’s executive order signed 10 days ago, establishing a framework for assessing national security risks posed by advanced AI systems before their public release. Anthropic had previously highlighted the potential risks associated with Mythos, particularly regarding software vulnerabilities that could impact economies, public safety, and national security if exploited.
Bank of Canada governor Tiff Macklem discussed the concerns surrounding Mythos during the International Monetary Fund’s spring meetings, emphasizing the need for proactive measures to address the challenges posed by evolving AI technologies. Macklem stressed the importance of robust cybersecurity measures in light of the vulnerabilities exposed by advanced AI models like Mythos.
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