Japan has requested broader access to advanced AI models from Anthropic and OpenAI, according to Nikkei. The move is part of a wider cybersecurity cooperation effort to use frontier models for vulnerability inspection. Access had previously been restricted to selected organizations, including for Anthropic’s Mythos and OpenAI’s GPT-5.5-Cyber. Japan’s request signals deeper institutional engagement with these technologies as Anthropic prepares for an initial public offering.
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