OpenAI Gives Japanese Banks Early Access to GPT-5.5 as AI-Driven Cybersecurity Risks Escalate

OpenAI gave selected Japanese financial institutions early access to GPT-5.5 after talks in Tokyo.

Major banks including MUFG, Sumitomo Mitsui, and Mizuho will test the model against AI-enabled cyber threats.

Japan is also weighing access to Anthropic’s frontier model for the government.

A new public-private group in Japan is assessing how frontier AI could affect financial-sector security.