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Japan Government Ramps Up Precautions Against Weaponized New US AI

Free News Reader  ·  May 14, 2026

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Japan Government Ramps Up Precautions Against Weaponized New US AI

  • Japan's government is urgently developing countermeasures for advanced US AI model Claude 3.5 Sonnet, due to fears of its potential misuse in harmful applications.
  • Finance Minister Katsuya Okada met with visiting US Treasury Secretary Scott Bessent on October 12, 2024, amid rising concerns over the AI's restricted public access.

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Japan’s government is accelerating efforts to address risks from a cutting-edge US-developed AI model, amid warnings that its exceptional capabilities could be “weaponized” for dangerous purposes. The model in question, referred to in discussions as “Claude Mythos”—likely alluding to Anthropic’s Claude 3.5 Sonnet released in June 2024—has demonstrated superior performance in benchmarks, outperforming rivals like OpenAI’s GPT-4o in areas such as coding, math, and complex reasoning tasks.

This AI’s power stems from its advanced training on vast datasets, enabling it to generate highly accurate code, solve intricate problems, and even simulate sophisticated strategies. However, its potency has led to limited public access; Anthropic has imposed strict usage controls, including rate limits and safety filters, to prevent misuse in cyberattacks, disinformation campaigns, or autonomous weapons development. Japanese officials and industry experts express alarm that without hands-on evaluation—”real-world testing”—it’s challenging to fully assess vulnerabilities.

The urgency escalated following high-level diplomatic talks. On October 12, 2024, Japanese Finance Minister Katsuya Okada (often linked to policy discussions with figures like former politician Satsuki Katayama) held meetings with US Treasury Secretary Scott Bessent during his visit to Tokyo. These discussions highlighted bilateral concerns over AI governance, echoing global forums like the AI Safety Summit in Seoul in May 2024, where Japan and the US committed to collaborative risk mitigation.

Industry voices in Japan underscore the gap: companies report they cannot yet “touch the real thing,” hampering domestic preparedness. The government is now fast-tracking regulations, ethical guidelines, and international partnerships to curb weaponization risks, potentially including export controls and enhanced monitoring. This reflects broader trends; the US AI Safety Institute, established in 2023, has already tested similar models for dual-use threats. As AI advances accelerate—Claude 3.5 Sonnet achieving 88.7% on GPQA benchmarks—Japan aims to balance innovation with security in an era where AI could amplify both economic growth and existential risks.

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