Tokyo plans to ask Anthropic and OpenAI for additional access to their models specialized in identifying software vulnerabilities. The Japanese government and a select group of financial institutions already use Claude Mythos Preview and GPT-5.5-Cyber through Project Glasswing, which gathered approximately 150 organizations across more than 15 countries. The arrangement involving GPT-5.5-Cyber was coordinated by the US government after discussions between Finance Minister Satsuki Katayama and OpenAI executives. This expansion is part of a national cybersecurity package focused on strengthening international cooperation, while Japan is also offering to host data centers operated by the companies involved.
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