Anthropic's Mythos 5 Cleared for 100+ US Institutions After Trump Administration Talks; Fable 5 Still Frozen

The US government has lifted its block on Anthropic's powerful Claude Mythos 5 AI model, allowing the company to grant access to over 100 US institutions including major corporations and government agencies. The move, confirmed by multiple outlets, marks a significant de-escalation in tensions between the Trump Administration and the AI lab after export controls were imposed two weeks ago that shut down both Mythos 5 and its public-facing cousin, Fable 5. Commerce Secretary Howard Lutnick informed Anthropic in a letter that the decision was made because “appropriate safeguards are in place,” according to Wired. The letter, also seen by Axios, notes “significant progress” from the company’s engagement with the government following weeks of negotiations between the White House and the AI lab. The abrupt removal of the models on June 12 had created uncertainty in the industry and among allies whose cyber capabilities were impacted, Axios reported. “appropriate safeguards are in place.” The partial resolution leaves the public-facing version, Fable 5, in limbo with no clear timeline for rollout, according to The Verge. Semafor reported that talks about “Fable 5” are ongoing, signaling that the administration is taking a case-by-case approach to Anthropic’s most advanced models. The move follows warnings from Amazon and other companies about the economic fallout of a full shutdown. “significant progress” from the company’s engagement with the government. Anthropic co-founder Tom Brown received the letter from Secretary Lutnick, The Verge reported, capping a rollercoaster negotiation process that saw the models effectively banned before this limited reinstatement. While Mythos 5 is now accessible to select institutions, the uncertainty around Fable 5 underscores the fragile relationship between the Trump administration and leading AI developers as export control debates continue.

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