OpenAI has paused development of its upcoming model Astra after internal evaluations revealed it may have reached the "critical" cybersecurity threshold — meaning it can autonomously identify and exploit zero-day vulnerabilities in hardened real-world systems without human intervention. Under OpenAI's Preparedness Framework, this triggers the strictest possible safeguards. The company says Astra is still in development and was not involved in the Hugging Face incident, but the...