Reuter: Japanese banks are getting early access to OpenAI’s newest model for security testing, which is believed to be o…

Rohan Paul Twitter · Rohan Paul (@rohanpaul_ai) · 2026-05-30

Japanese banks are receiving early access to OpenAI's newest model for security testing — reportedly comparable to Anthropic's Claude Mythos — while Japan's three largest banks are also expected to gain access to Anthropic's models.

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OpenAI's Institutional Deployment Expansion

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Topics: enterprise-aibanking-aiopenaianthropicjapan

Claims

Japanese banks are receiving early access to OpenAI's newest model for security testing.
OpenAI's newest model is believed to be on par with Anthropic's Claude Mythos.
Japan's three largest banks are expected to gain access to Anthropic's models as well.
The financial sector is an early enterprise target for the latest frontier AI models.

Key quotes

Japanese banks are getting early access to OpenAI's newest model for security testing, which is believed to be on a par with that of rival Anthropic's Claude Mythos.

Japan's three largest banks are expected to gain access to Anthropic