Japan requests expanded access to Anthropic and OpenAI models for cybersecurity, Nikkei reports
Japan has asked for broader access to advanced AI models from Anthropic and OpenAI as part of a cybersecurity cooperation effort, according to a Nikkei report. The request covers Anthropic's Mythos and OpenAI's GPT-5.5-Cyber models, which have previously been limited to select organizations. Japan intends to use these frontier models for vulnerability inspection.
Key points
- Japan requests expanded access to Anthropic's Mythos and OpenAI's GPT-5.5-Cyber for vulnerability inspection
- Access to these models was previously limited to select organizations, Nikkei reports
- Request comes amid Anthropic's IPO preparations, highlighting strategic importance of AI in cybersecurity
The report notes this development comes as Anthropic prepares for an IPO, suggesting the strategic value of AI models in international cybersecurity frameworks. Market observers will watch Anthropic's response and any resulting changes in model access, which could affect AI model rankings and the company's valuation trajectory through year-end.
Japan seeks expanded access to Anthropic, OpenAI AI models for cybersecurity
cryptobriefing.com · 30 October 2026
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