The AI model is being made available through OpenAI’s Trusted Access for Cyber – a controlled programme for verified defenders and approved organisations.

Researchers who have tested Anthropic’s Mythos and OpenAI’s GPT-5.5 say their hacking capabilities are a “game-changer.”

OpenAI said Wednesday it is launching a cyber action plan for South Korea to help government agencies, public institutions and companies strengthen defenses aga

The AI model is being made available through OpenAI’s Trusted Access for Cyber – a controlled programme for verified defenders and approved organisations.

OpenAI will provide its GPT-5.5-Cyber model to Japan's megabanks and government for cybersecurity, as AI-driven threats reshape the financial security landscape.