OpenAI Rolls Out GPT-6 Astra With Stronger Agent Benchmarks and Cyber Controls

OpenAI has rolled out GPT-6 Astra, a frontier model designed for agentic computer use, coding, professional work, scientific reasoning and cybersecurity, after introducing it on September 3, 2026. The launch pairs large benchmark gains with a more guarded deployment because Astra is the first OpenAI model to hit the company's Critical cybersecurity capability threshold.