Anthropic gains limited Mythos 5 release as U.S. tightens AI access controls

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Anthropic Mythos 5 limited release

Highlights

U.S. commerce department approved Anthropic's Mythos 5 release to about 100 trusted partners, including government agencies, under strict user vetting and export controls.
Anthropic's broader commercial release and public Fable 5 launch remain blocked as officials maintain a case-by-case approval process amid ongoing security concerns.
Unpredictable ad hoc AI access regulation by the Trump administration is drawing industry criticism, with investors warning it could hinder U.S. innovation relative to China.

Limited partner rollout under government oversight

As first reported by Financial Times, the U.S. commerce department has cleared Anthropic to provide Mythos 5 to about 100 trusted partners, including companies and U.S. government departments, after discussions over the model's security risks.

The partial release follows progress by Anthropic in addressing official concerns, according to people with direct knowledge of the matter. The department says it has worked over the past two weeks to protect security while keeping the U.S. in a leading position in artificial intelligence.

Access remains tightly constrained. Officials are asking to vet and approve users before the technology is distributed, while the export control imposed on Anthropic two weeks ago is still in place, preventing a broader reopening for most businesses.

A publicly accessible version, Fable 5, is also not being released at this stage. Anthropic says it is working to restore access quickly for a small group of cyber defenders and infrastructure providers, and continues talks with the government through the weekend.

Industry concern over ad hoc AI regulation

The limited approval for Anthropic and similar restrictions affecting a rival OpenAI model are adding to industry unease over the Trump administration's still-evolving approach to frontier AI oversight. The White House has outlined plans for a voluntary safety framework, but it has yet to put a formal system in place and is instead intervening case by case.

That approach is drawing criticism from investors and policy figures who warn that uncertain release rules could slow U.S. innovation and hand an advantage to competitors such as China. Venture capitalist Marc Andreessen says the current environment risks turning model access into a restrictive control regime rather than a predictable regulatory process.

OpenAI chief executive Sam Altman says giving trusted partners early access is reasonable, but adds that the current process is not optimal. Dean Ball, a former senior AI adviser to President Donald Trump who is joining OpenAI next month, says the administration has effectively created a preapproval system for advanced models without making clear what safety standards would justify wider release.

Our earlier article covered the FCC’s decision to ban imports of telecom and video-surveillance equipment from Huawei, ZTE, Hytera, Hikvision, and Dahua starting in July, expanding restrictions first introduced in 2022. We noted that the move intensifies national security scrutiny of sensitive supply chains and further raises regulatory barriers for Chinese manufacturers seeking access to the U.S. market.

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