OpenAI expanded its Daybreak cyber defense initiative on August 10, 2026, introducing two access tiers: Daybreak Blue for general defensive work such as incident response and malware analysis, and Daybreak Red for advanced security testing and vulnerability research. The company also launched GPT-5.6-Cyber, a specialized model available exclusively through the Red tier to select partners including Accenture, IBM, and CrowdStrike. OpenAI said the expansion responds to a narrowing window for defenders as threat actors increasingly use AI to conduct cyberattacks at greater speed and scale.