TL;DRLutnick cleared Anthropic to redeploy Mythos 5 to trusted cyber defenders. Fable 5 remains restricted. Talks continue.Lutnick cleared Anthropic to redeploy Mythos 5 to trusted cyber defenders. Fable 5 remains restricted. Talks continue.
The US government has cleared Anthropic to restore access to Mythos 5, its most powerful cybersecurity model, for a select group of trusted partners. Commerce Secretary Howard Lutnick wrote in a letter to Anthropic co-founder Tom Brown that the company’s efforts to address security concerns had “yielded significant progress,” and that the model could be released to “certain trusted partners.” The letter, dated Friday and seen by Bloomberg, does not mention any change to the restrictions on Fable 5, the public-facing version of the same model.
The clearance partially resolves a confrontation that began two weeks ago when the government invoked export controls to force Anthropic to disable both Mythos 5 and Fable 5, citing fears that security guardrails could be circumvented. Anthropic shut off all global access to both models because it could not distinguish foreign nationals from domestic users in real time.
Anthropic said in a statement that Mythos 5 “can be redeployed to a small group of cyber defenders and infrastructure providers,” and that it is working to restore their access as quickly as possible. The company said it is “pleased to see this progress” and continues to work with the government to expand Mythos 5 access and make Fable 5 available for general use again.
