OpenAI on Tuesday announced the next phase of its cybersecurity strategy and a new model specifically designed for use by digital defenders, GPT-5.4-Cyber.
The news comes in the wake of an announcement last week by competitor Anthropic that its new Claude Mythos Preview model is only being privately released for now—because, the company says, it could be exploited by hackers and bad actors. Anthropic also announced an industry coalition, including competitors like Google, focused on how advances in…

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