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TrustFinance Global Insights
5월 13, 2026
2 min read
112

Japan’s three largest banks, MUFG Bank, Sumitomo Mitsui Banking Corp, and Mizuho Bank, are set to gain access to Claude Mythos, an advanced artificial intelligence model developed by U.S. startup Anthropic. Access is expected as early as the end of May.
The move was reportedly communicated by U.S. Treasury Secretary Scott Bessent during meetings in Japan, according to a report from the Nikkei.
This development marks the first time Japanese organizations will be granted access to the high-powered Mythos model. Previously, its use was restricted to approximately 50 organizations worldwide, including U.S. companies and government agencies in the U.S. and Britain.
The decision comes as Tokyo actively pushes for enhanced cybersecurity capabilities amid growing concerns over risks associated with cutting-edge AI systems. Japanese Prime Minister Sanae Takaichi has instructed ministers to strengthen efforts to identify vulnerabilities in the nation's infrastructure.
The primary impact of this access is a significant enhancement of cybersecurity for Japan's critical financial infrastructure. The Mythos AI is designed to identify and exploit software security vulnerabilities far more rapidly than previous systems.
This collaboration strengthens the U.S.-Japan alliance on technology and security. For the banks involved, it represents a substantial upgrade in their defensive capabilities against cyber threats, potentially boosting investor confidence in the stability of Japan's financial sector.
Granting Japan's top banks access to Mythos AI is a strategic step toward fortifying national security and technological resilience. The market will closely monitor how this advanced AI integration improves cybersecurity effectiveness and whether similar collaborations will extend to other sectors or countries. The focus remains on mitigating AI-related security risks on a global scale.
Q: What is Claude Mythos?
A: It is an advanced artificial intelligence model from Anthropic capable of identifying software security vulnerabilities at high speed.
Q: Which Japanese banks will get access?
A: Japan's three largest banks: MUFG Bank (TYO:8306), Sumitomo Mitsui Banking Corp (TYO:8316), and Mizuho Bank (TYO:8411).
Q: Why is this move significant?
A: It is the first time Japanese organizations have received access to this restricted AI model, signaling a deeper U.S.-Japan partnership on cybersecurity.
Source: Nikkei via Investing.com

TrustFinance Global Insights
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