Anthropic's Mythos AI Just Forced the White House to Consider Regulating AI

Something extraordinary happened in Washington this week. The Trump administration — which came to power championing deregulation and explicitly rolling back Biden-era AI safety measures — is now reportedly drafting an executive order to regulate advanced AI models before they are released to the public. The catalyst: Anthropic's Mythos model, a system so capable at finding and exploiting software vulnerabilities that it has shaken governments, military planners, and the entire tech industry to its core.

What Is Anthropic's Mythos Model?

Mythos is Anthropic's most advanced AI model to date, and it was released approximately one month ago to a heavily restricted set of partners including Amazon, Apple, and Microsoft. The reason for the restricted access is unprecedented in AI history: Anthropic disclosed that Mythos had independently identified thousands of previously unknown software vulnerabilities, some of which had been hidden in critical systems for up to 27 years.

Anthropic warned publicly that AI models have now surpassed 'all but the most skilled humans at finding and exploiting software vulnerabilities' — a statement that set off alarm bells across governments, defence agencies, and the cybersecurity industry globally. The model scored 93.9% on the SWE-Bench benchmark, which tests real-world GitHub coding tasks — compared to Claude 2's score of just 2% less than three years ago.

The Pentagon, the Lawsuit, and the Policy U-Turn

The situation escalated rapidly. The Pentagon designated Anthropic a supply-chain risk and ordered federal agencies to cut ties with the company, following a dispute over a $200 million contract in which Anthropic refused to grant the military unrestricted use of its technology. Anthropic is now challenging that designation in court. Meanwhile, U.S. senators began drafting a proposal for a formal federal AI commission, and the White House — through economic adviser Kevin Hassett — confirmed it is studying a potential executive order that would require AI models to undergo safety evaluations before public release.

"Mythos is the first, but it's incumbent on us to build a system so U.S. AI can be the leader in AI and be safe at the same time." — Kevin Hassett, White House Economic Adviser

OpenAI Steps In: GPT-5.5-Cyber and EU Access

In contrast to Anthropic's restricted approach, OpenAI announced it would grant the European Union preview access to its new GPT-5.5-Cyber model — a variant of its latest AI specifically designed for cybersecurity applications — to vetted cybersecurity teams and EU institutions. The EU AI Office welcomed OpenAI's transparency, while noting that discussions with Anthropic about Mythos access are at a 'different stage.' The contrast in approach has intensified scrutiny of how AI labs handle their most powerful and potentially dangerous systems.

SpaceX Enters the Picture: 300 Megawatts for Anthropic

Adding another layer of complexity to the story, SpaceX is reportedly renting more than 300 megawatts of compute capacity at its massive Tennessee data centre to Anthropic — even as the Pentagon attempts to cut the company off from government contracts. The deal underscores how the infrastructure battle for AI compute has become completely decoupled from political and regulatory disputes. Anthropic's compute needs are so significant that it is now effectively a major tenant in one of Elon Musk's data centres, despite the adversarial relationship between Musk and the AI safety community.

What This Means for the AI Industry

The Mythos episode represents a genuine inflection point in how governments think about AI. For years, the debate around AI regulation centred on bias, misinformation, and job displacement — important issues, but ones that felt manageable. Mythos has shifted the conversation to something more urgent: the possibility that an AI system could identify and exploit critical infrastructure vulnerabilities at a scale and speed that human defenders cannot match.

The irony of the Trump administration — which explicitly rejected Biden's AI safety framework when it took office — now considering mandatory pre-release evaluations is not lost on anyone watching. But the bipartisan concern over Mythos suggests that when AI capabilities cross certain thresholds, ideological positions on regulation become secondary to national security realities. The era of voluntary AI safety pledges may be ending faster than anyone predicted.