GPT-6 Astra is OpenAI’s new flagship model. It began rolling out on September 3, 2026, first to enterprises in OpenAI’s Trusted Access Program, with access for ChatGPT Plus, Pro, Business and Enterprise, the API, and AWS scheduled over the following days.
OpenAI describes it as its most capable model yet for computer use, software engineering, science and professional work. The API model id is gpt-6-astra, priced at $10 per million input tokens and $50 per million output tokens, with a 1.05 million-token context window. It is also the first OpenAI model the company has designated as meeting its Critical cybersecurity capability threshold.
Source: OpenAI API — Models