The Korean Telecom Giant at the Center of Anthropic's Mythos Controversy

Days before Anthropic took its most advanced AI models offline, the White House ordered the company to revoke SK Telecom's access to Claude Mythos over claims of alleged ties to China. The Trump administration's move to impose export controls on Anthropic's most powerful AI technology followed a spat over the company granting South Korean telecom giant SK Telecom access to its Claude Mythos model, according to people familiar with the matter. US officials were concerned about what they alleged were SK Telecom's ties to China, those people said. Those concerns appear to have compounded when Amazon later flagged vulnerabilities it identified in Fable 5 to the White House. Fable 5 is a highly safeguarded version of Mythos that Anthropic released to the public on June 9.