# OpenAI GPT-5.6-Cyber: What Daybreak Red Means for Devs > Source: > Published: 2026-08-19 17:10:27+00:00 OpenAI shipped GPT-5.6-Cyber on August 10 — a purpose-trained model that completes 95% of advanced exploit-chain and privilege-escalation prompts, compared to 1.5% for its standard GPT-5.6 Sol. Access is gated behind a new vetting tier called Daybreak Red. The same week, OpenAI froze its Astra model for crossing the “too dangerous to ship” line. Both things are worth holding in your head at the same time. What That 95% Number Actually Means Before the marketing spin lands, here is what the 95% completion rate measures: how often GPT-5.6-Cyber agrees to respond to advanced security prompts, not whether its output is […] The post