Japan banks gain access to OpenAI GPT-5.5 for cyber defense

Some Japanese financial institutions have been granted access to OpenAI's GPT-5.5 model to help strengthen their defences against cyberattacks, Japanese Finance Minister Satsuki Katayama said on Friday. Katayama described the development as a significant advancement for Japan's financial sector following a meeting in Tokyo with Jason Kwon, OpenAI's chief strategy officer.