US releases powerful Anthropic model Mythos to some US companies

Key Points:

• The US government has lifted its block on Anthropic’s Claude Mythos 5 AI model, allowing its release to over 100 US institutions, including major companies and government agencies, following intense negotiations.
• This decision reverses export controls imposed two weeks ago by the Trump Administration, which had halted Mythos and its related model Fable 5 due to security concerns about potential misuse.
• Commerce Secretary Howard Lutnick cited “significant progress” and appropriate safeguards in place, with Anthropic agreeing to collaborate on protocols and standards for AI model releases.
• The new regulatory framework grants the US government control over frontier AI model distribution, aiming to balance national security with maintaining global AI leadership, though international partners remain uncertain about access timelines.
• The move coincides with OpenAI’s release of its GPT-5.6 model to select government-approved partners, highlighting ongoing competition and regulatory challenges in the AI sector.