OpenAI launches GPT-6 Astra, its most powerful model yet, with limited early access

OpenAI has begun rolling out GPT-6 Astra, the company's newest and most capable model, on 3 September 2026. It is the first major upgrade to ChatGPT and Codex in over a year. OpenAI calls Astra its most capable model for complex work. That covers coding, research, computer use and long multistep tasks. Astra can also…