Described by OpenAI as a new model tuned for defensive cybersecurity tasks, GPT-5.4-Cyber is being offered first to vetted ...

After Anthropic unveiled its Claude Mythos AI model, OpenAI introduced its own cybersecurity-focused model, GPT-5.4-Cyber.

OpenAI has announced a new AI model called GPT-5.4-Cyber. Similar to Anthropic’s Claude Mythos, this new “cyber-permissive” ...

The Cybersecurity and Infrastructure Security Agency doesn't have access to Anthropic's powerful new Mythos Preview model, ...

OpenAI says its safeguards “sufficiently reduce cyber risk” for now, while GPT-5.4-Cyber is a new cybersecurity-focused model ...

Cyber, a fine-tuned variant of its GPT-5.4 model designed for defensive cybersecurity work and also announced a significant ...

OpenAI is presenting its new GPT-5.4-Cyber model to U.S. federal agencies, state governments, and Five Eyes allies, showcasing its potential for defensive cybersecurity. The AI can rapidly identify, ...

OpenAI launches GPT-5.4-Cyber with binary reverse engineering for verified defenders, scaling access to thousands as it ...

The head of the National Cyber Security Centre says frontier AI tools can be a force for good - if kept out of the wrong ...

Anthropic’s Claude Mythos Preview (Mythos) signals a shift in cyber risk conditions—not because the new large language model version is just ...

OpenAI launches GPT-5.4-Cyber with selective access for verified defenders, adding a cyber-focused model and tighter controls ...

A Chinese cybersecurity firm has claimed AI-driven vulnerability discovery capabilities that approach the scale of Claude ...