9to5Mac April 14, 2026

OpenAI unveils GPT‑5.4‑Cyber, an AI model for defensive cybersecurity

OpenAI has announced a new AI model called GPT-5.4-Cyber. Similar to Anthropic’s Claude Mythos, this new “cyber-permissive” variant of its GPT-5.4 is built for defensive cybersecurity and not public use. more…

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OpenAI unveils GPT‑5.4‑Cyber, an AI model for defensive cybersecurity

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