US Clears Anthropic to Release Claude Mythos 5

The US Commerce Department partially lifted an export control directive, allowing Anthropic to release its Claude Mythos 5 model to over 100 US institutions. Commerce Secretary Howard Lutnick determined safeguards were sufficient for trusted partners, while discussions continue on releasing the Claude Fable 5 model.

The US Commerce Department has partially lifted an export control directive that halted access to Anthropic's most capable model, permitting the company to release Claude Mythos 5 to more than 100 US institutions , including major companies and government agencies, according to reporting by Semafor and 9to5mac. Commerce Secretary Howard Lutnick wrote in a letter to Anthropic chief compute officer Tom Brown that he "has determined that appropriate safeguards are in place to permit certain trusted partners to access the Claude Mythos 5 Model," a passage published by Semafor and quoted by 9to5mac. Anthropic had suspended access to Claude Mythos 5 and Claude Fable 5 on Jun 12, 2026 , per an Anthropic company statement. Lutnick's letter is reported to be silent on Claude Fable 5 ; people close to the talks told Semafor that discussions are "moving toward releasing Fable as well," but no timeline was given.