Daybreak

OpenAI has expanded its Daybreak cyber defense service into two tiers, Blue and Red, and introduced GPT-5.6-Cyber, a specialized model built on GPT-5.6 Sol for security testing and vulnerability research. The Red tier, which includes the new model, is currently limited to trusted partners like Accenture, IBM, CrowdStrike, and Cloudflare.

OpenAI has launched GPT-5.6-Cyber, a specialized model for offensive security research that answers 95% of sensitive cybersecurity queries other models refuse. The model already discovered real vulnerabilities in Chrome's V8 engine and a major mobile OS, and is available through a new restricted access tier called Daybreak Red.

OpenAI has launched Daybreak, a cybersecurity platform built on three GPT-5.5 model variants designed to detect software vulnerabilities, generate patches, and validate fixes in enterprise codebases. The platform directly competes with Anthropic's Mythos and includes partnerships with eight major security companies including Cisco, Cloudflare, and CrowdStrike.