Anthropic’s Mythos Raises Regulatory Alarm as Bessent and Powell Convene Bank CEOs for Emergency Talks

Anthropic has introduced Claude Mythos, also known as Fable 5, touting stronger code-analysis and vulnerability-detection capabilities. Such models can help defenders patch smart contracts but may also lower the technical barriers to launching cyberattacks, fueling concerns in the crypto community about the security of assets and protocols.

Anthropic said the new model includes general-purpose safety safeguards and routes cybersecurity-related queries to a specialized model to reduce the risk of misuse. The Uniswap founder, however, criticized the design of its “safety filter” as poorly calibrated. Related reports did not disclose the exact release date, any losses or the value of assets affected.

Anthropic’s Mythos AI model is positioned as a system with advanced cybersecurity capabilities. But its powerful offensive and defensive tools could also be misused, drawing scrutiny from the European Commission and financial regulators. Anthropic has pledged to comply with the EU’s AI Code of Practice, assess the model’s risks and take steps to mitigate them.

EU officials have now met with Anthropic for a briefing on cybersecurity concerns surrounding Mythos, while euro-area finance ministers have separately raised requirements concerning bank access. Available information does not disclose the exact date of the meeting, the number of banks affected or any transaction amounts. Attention will now turn to access permissions and risk-control standards.

Anthropic's Mythos AI model has advanced coding and vulnerability-detection capabilities, but it could also lower the barrier for hackers to launch attacks. The Australian Securities and Investments Commission (ASIC) and financial regulators across the Asia-Pacific region are therefore focused on the cybersecurity risks facing bank networks, customer data and financial-system stability.

As of July 19, 2026, ASIC was working with other regulators to assess potential threats from Mythos, while reports said Anthropic would provide an explanation. Available information disclosed no formal investigation timetable, quantified losses or amounts involved, and did not indicate that any bank had already been attacked using Mythos. Regulators remain focused on raising vigilance and strengthening defenses before any such incidents occur.

JPMorganChase CEO Jamie Dimon said Anthropic's Claude Mythos generative AI model can identify software vulnerabilities faster than existing tools, potentially strengthening both defensive capabilities and attacks. Because large banks share numerous open-source components, a single vulnerability could spread across the financial system, making the issue a significant risk.

Speaking recently at an Anthropic event, Dimon described Mythos as “very high risk” and urged major banks, including JPMorganChase, to work together to identify and patch vulnerabilities in the open-source software they share. He also expects generative AI and traditional software to coexist over the long term, rather than AI replacing conventional software entirely. Reports did not disclose the event's exact date, quantitative risk data or any financial amounts involved.

Anthropic’s relationship with the US government had become strained after it rejected the Department of Defense’s demand for an “unrestricted license” to its AI technology and was placed on a blacklist. CEO Dario Amodei’s return to the White House could determine whether its latest model, Mythos, can be deployed for government and national security applications. The talks also bear on the policy boundaries AI suppliers set for military uses.

Amodei met the White House chief of staff and Treasury Secretary Scott Bessent to discuss Mythos deployment and national security, marking the first senior-level effort to ease tensions since the dispute. The Pentagon’s chief technology officer later said Anthropic remained on the blacklist but that Mythos would receive an exception. Reports did not disclose the exact meeting date, procurement value or deployment timetable.

Group of Seven finance chiefs are discussing a cross-border AI governance framework, with Anthropic’s Mythos model, which is under development, among the areas of focus. Officials worry that unequal access to information about the model’s capabilities, risks and applications could weaken coordination among financial regulators and undermine financial-system resilience. That has put an information-sharing mechanism high on the agenda.

At their latest meeting, G7 finance chiefs called for greater cross-border transparency about the Mythos model and discussed institutionalizing information-sharing arrangements. However, available information does not disclose the meeting’s exact date, the participating officials, an implementation timetable or any related amounts. Nor does it indicate whether Anthropic has committed to providing model information. The initiative remains at the policy-discussion stage, with no formal agreement yet.

Anthropic plans to offer its Mythos AI model to British banks as part of an expansion of “Project Glasswing.” Mythos is designed to identify vulnerabilities in cyber defenses, helping financial institutions uncover attack surfaces earlier. Because banks hold large volumes of sensitive data, model security and the risk of false positives are particularly important.

Anthropic recently said it was ready to offer Mythos to British banks, but as of July 20, 2026, it had not disclosed the participating banks, deployment date, contract value or pricing model. The model’s release was previously delayed for safety testing, and the initiative signals that the company is moving ahead with real-world deployment in the financial sector.