The US has lifted export curbs on Anthropic’s newest Claude models, Fable 5 and Mythos 5, about three weeks after the Trump administration flagged the models as national security risks.

As of today, Anthropic confirmed in a blog post, Fable 5 will be available globally, and US organizations have had access restored to Mythos 5 since June 26. Anthropic said it is now working with the government to expand Mythos access to a “broader set of domestic and international partners in the Glasswing program.” That program allows cybersecurity researchers at trusted companies to access Mythos for defensive purposes.

In a letter to Anthropic viewed by Reuters and The New York Times, Commerce Secretary Howard Lutnick said Anthropic would “no longer need a license for exports or in-country transfers of its Claude Mythos and Claude Fable AI models.” The letter acknowledged that Anthropic had “taken steps in close coordination with the US government to address the risks” posed by the models.

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Another large study has found no link between autism and Tylenol use during pregnancy, refuting claims by President Trump and anti-vaccine Health Secretary Robert F. Kennedy Jr.

In September, Trump and Kennedy held a press conference in which they stated without clear evidence that the common fever and pain reducer acetaminophen—sold as Tylenol in the US and also known as paracetamol—causes autism in children if taken during pregnancy. Trump repeatedly warned pregnant people not to take Tylenol and instead "tough it out" with fever and/or pain.

Medical organizations decried Trump's message, emphasizing that acetaminophen is a safe pain and fever reliever during pregnancy and that untreated fever during pregnancy is known to increase the risk of autism in babies as well as other conditions, including miscarriage, birth defects, and premature birth. Still, the president's warning was effective. Texas sued the maker of Tylenol over the alleged connection. And a study in The Lancet in March found that use of acetaminophen in pregnant patients in emergency departments fell by 10 percent after Trump's press conference.

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