OpenAI Launches GPT-5.4-Cyber for Advanced AI-Driven Cyber Defense (infosecurity-magazine.com)

• GPT-5.4-Cyber targets automated cybersecurity defense workflows.
• Direct market response to Anthropic's recent security-focused model releases.
• Highlights the accelerating dual-use nature of frontier AI models.

"OpenAI has unveiled GPT-5.4-Cyber, a frontier model optimized for cybersecurity operations, including automated threat hunting and vulnerability assessment. This launch responds to recent advancements from competitors, specifically Anthropic’s Claude Mythos and Project Glasswing. As these models gain capability in code analysis and exploit identification, European entities must evaluate the balance between utilizing these tools for infrastructure hardening versus the risks of AI-driven offensive capabilities developed by non-European hyperscalers."