OpenAI Launches GPT-5.6-Cyber with Reduced Safeguards for Exploit Development

OpenAI has introduced GPT-5.6-Cyber, a specialized model available through its Daybreak Red tier that operates with fewer safety constraints to support offensive security tasks. The system is designed to assist with vulnerability discovery, penetration testing, and exploit chain development, having recently identified CVE-2026-15903, a high-severity flaw in the V8 JavaScript engine. While the tool aims to help defenders close security gaps, it carries inherent risks associated with models trained to perform dual-use cyber activities with minimized refusals.