@Mizuho Bank

OpenAI announced on May 21 it will supply its specialized GPT-5.5-Cyber model to Japan’s three megabanks and the Japanese government for cybersecurity defense. The deployment follows Anthropic’s relea…

OpenAI will supply its GPT-5.5-Cyber model to Japan's three largest banks — MUFG Bank, Sumitomo Mitsui Banking Corp., and Mizuho Bank — as part of a US-Japan cybersecurity initiative covering 15 criti…