The Japan Financial Services Agency published an overview of a press conference in which Minister of Finance Katayama said OpenAI had promised, in coordination with the United States government, to grant some Japanese financial institutions access to its frontier AI model GPT-5.5-Cyber. He presented the move as a cybersecurity measure for the financial sector and said the government is coordinating on the issue with the Minister for Digital Affairs, the Minister for Cyber Security and the National Cyber Office. In the Q&A, Katayama indicated that access for a few major Japanese financial institutions should be understood as already granted and moving into use, while arrangements around other frontier AI systems, including Mythos, are still being discussed with US counterparts and at Japan Financial Services Agency level. He said knowledge from testing could be used to improve system response more broadly, but any extension beyond currently trusted financial institutions and into other sectors would depend on contractual terms. He also said the government plans to check reports that Anthropic may publicly release comparable technology.
Japan Financial Services Agency2026-05-29
Japan Financial Services Agency publishes minister remarks that some Japanese financial institutions have been granted access to OpenAI GPT-5.5-Cyber
The Japan Financial Services Agency reported that Minister of Finance Katayama announced OpenAI, in coordination with the United States government, will grant selected Japanese financial institutions access to its frontier AI model GPT-5.5-Cyber as a cybersecurity measure. Katayama said access for a few major institutions is already underway, while discussions continue on other frontier AI systems and any broader rollout beyond currently trusted institutions, and noted the government will review reports that Anthropic may release comparable technology.