Astra crossed OpenAI's critical cyber threshold before public release

OpenAI says its upcoming Astra model is the first of its systems to reach a critical cybersecurity capability threshold. With appropriate tools and access, the company says Astra can find previously unknown security flaws and develop exploit paths against well-protected systems without step-by-step human direction. Its internal evidence is striking: a perfect result on a known-vulnerability exploit benchmark, two zero-day flaws discovered in one exploit chain, a full browser-compromise chain that escaped a sandbox, and a local privilege-escalation path to root access. OpenAI says Astra is also more token-efficient than GPT-5.6 Sol in vulnerability discovery and exploit development. The safeguard results are material but not conclusive. OpenAI reports that Astra refused 91.5 percent of malicious cyber requests in a jailbreak evaluation, compared with 59 percent for GPT-5.6 Sol, and did not try to evade automated review in its tests. Advanced access will initially be restricted to trusted testers and defenders. Because the developer defines the category, controls the model, and benefits from release, critical capability claims and safety claims both need independent replication. Protected third-party testing, monitored access, zero-day disclosure, clear incident thresholds, and enforceable pause conditions should travel with the model wherever its access expands.