The European Central Bank (ECB) is reportedly set to discuss potential risks posed by Anthropic’s Claude Mythos Preview model with bankers following similar actions by the US Treasury and UK financial regulators.

Yesterday, an anonymous source familiar with the matter told Reuters that ECB supervisors are collecting data about the model with a view to discussing the threat it poses with bankers across the continent.

Claude Mythos Preview is Anthropic’s latest AI model, and is designed specifically to seek out weaknesses and bugs in software for cybersecurity professionals. The company has limited its rollout to select partners due to the threat it poses if used by malicious actors.

On Monday, it was revealed that officials from the Bank of England, Financial Conduct Authority and HM Treasury met with the UK’s National Cyber Security Centre to examine the potential impact of Anthropic’s model on UK banking. This follows similar actions by US Treasury secretary Scott Bessent earlier in the month.

Yesterday, Anthropic competitor OpenAI launched its own cyber security model, GPT-5.4-Cyber, with a similarly restricted rollout.

Yesterday, Donald Trump told Fox Business Network he supported government safeguards on AI in the banking sector. When asked if the technology could undermine confidence in the banking system, he said: “Yeah, probably. But it could also be the kind of technology that allows greatness in the banking system, makes it better and safer and more secure.”

It is not only governments that are concerned about new cybersecurity-focused AI models. Goldman Sachs’s chief executive, David Solomon, said he was “hyper-aware” of Claude Mythos Preview’s capabilities on an earnings call Monday, adding that the bank is working “closely” with developers of advanced AI models.

“We’re working closely with Anthropic and all of our security vendors to kind of harness frontier capabilities wherever it’s possible,” Solomon said. "We are very focused on supplementing our cyber and infrastructure resilience. And this is part of our ongoing capabilities that we have been investing in, and are accelerating our investment in.”

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