Japan seeks expanded access to advanced AI models from Anthropic and OpenAI

Tokyo reportedly wants more of the restricted cyber-focused models it already uses for vulnerability checks across government and finance Japan wants a bigger seat at the table where the world’s most tightly guarded AI models are handed out. The country is asking Anthropic and OpenAI for more access to their advanced models. Nikkei reported on October 30, 2026 that Tokyo plans to formally request further use of these high-performance systems, specifically to run vulnerability inspections. What Japan already has, and what it wants next Japan is not starting from zero. Earlier agreements in 2026 already gave Japanese government bodies and financial institutions some access to two specialized models: Anthropic’s Claude Mythos and OpenAI’s GPT-5.5-Cyber. The Anthropic piece arrived in early June 2026. The Japanese government and a select group of financial institutions gained access to Claude Mythos Preview as part of an expansion of Project Glasswing. That expansion stretched the program to approximately 150 organizations across more than 15 countries. The OpenAI track ran through the finance ministry. OpenAI granted Japanese banks access to GPT-5.5-Cyber after Finance Minister Satsuk...