OpenAI launches GPT-6 Cyber, its first dedicated cybersecurity model, rated critical and limited to vetted customers

On November 5, 2026, OpenAI unveiled GPT-6 Cyber, a GPT-6 Astra variant specialized in vulnerability discovery and exploit development, rated "critical" and restricted to approved Daybreak Red customers. For a CISO, it is both a defense tool and a precedent on the diffusion of offensive capability.