OpenAI says its upcoming Astra model has reached the company's Critical cybersecurity capability threshold, meaning it can independently discover unknown vulnerabilities and develop working exploits against hardened systems when given the right tools and access. The company has delayed some development and release work while adding safeguards intended to reduce cyber misuse and unauthorized model activity.
OpenAI's Preparedness Framework defines a Critical cyber-capable model as one that can identify and develop functional zero-day exploits across many hardened, real-world critical systems without human intervention. A model may also meet the threshold if it can plan and execute a novel end-to-end cyberattack against a hardened target based solely on a high-level objective. OpenAI Astra Discover Zero-Day Flaws According to OpenAI, Astra demonstrated a major improvement in vulnerability discovery and exploit development over GPT-5.6 Sol.
In internal assessments, the model reportedly found previously unknown flaws and converted them into exploit chains. One browser…
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