US Government Orders Anthropic To Suspend Claude Fable 5 And Claude Mythos 5

Anthropic launched Claude Fable 5 on June 9, described by the company as the most capable AI system it had ever made available to the public, but three days later it disappeared after Anthropic disabled access to both Claude Fable 5 and Claude Mythos 5 following a US government directive citing national security concerns.

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Anthropic said it received the order at 5:21pm Eastern Time and immediately began shutting the models down to comply, with the directive issued under export-control authorities targeting access by foreign nationals.

BBC

The BBC reported that Anthropic said the government believed it had become aware of a method of bypassing, or "jailbreaking" Fable 5, and that the company reviewed a demonstration of the technique used to identify a small number of previously known, minor vulnerabilities.

In the same BBC account, Anthropic said it had instituted safeguards for its newest models to "greatly reduce the likelihood" that they are "misused for tasks related to cybersecurity," while also saying no model is completely resistant to any jailbreak.

In Brussels, POLITICO.eu framed the US directive as a reminder that Europe is heavily reliant on American AI models, quoting European Commission spokesperson Thomas Regnier saying the Anthropic case "further underlines Europe's need for technological sovereignty."

POLITICO.eu also quoted Jordan Bardella saying, "This sudden decision comes to remind us that artificial intelligence is already a major issue of national sovereignty," while Finnish conservative MEP Aura Salla warned, "Europe cannot keep building its tech stack on access that can be switched off overnight by a foreign government."

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Across the Atlantic, TechCrunch reported that in India the suspension reignited debate over whether the country can afford to rely on technologies built and controlled elsewhere, after Anthropic said it received the US directive requiring it to suspend access to Fable 5 and Mythos 5 for all foreign nationals.

TechCrunch quoted Aakrit Vaish, founder of Activate, saying, "It completely changes things," and added that he told TechCrunch he woke up on Saturday morning "shocked and confused" by the announcement.

The BBC said the restriction means many foreign nationals working for Anthropic will not be able to touch the models, and it noted that Anthropic and the Trump administration are involved in a separate ongoing lawsuit over an order to stop government agencies using the company's AI tools.

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The BBC also reported that the UK government's AI Security Institute found in its tests that the model could exploit defences and systems 73% of the time, and that Gina Neff warned, "We're in uncharted territory at this point."

In Europe, POLITICO.eu described a policy push to deepen tech sovereignty, including plans for the EU to become more technologically sovereign and a week ahead featuring G7 leaders in France and EU leaders huddling in Brussels.

In India, TechCrunch reported that Vijay Rayapati, co-founder and CEO of Atomicwork, said, "If your AI team is not made up entirely of U.S. citizens, you are at a competitive disadvantage," linking the suspension to risks for startups whose teams span multiple countries.