OpenAI Launches GPT-6 Astra, Calling It a Generational Leap in AI Capa

OpenAI released GPT-6 Astra on September 3, 2026, positioning the model as its most capable system yet for software engineering, agentic workflows, and professional work ahead of a broader rollout.

A flagship model more than a year after GPT-5

OpenAI on September 3, 2026, launched GPT-6 Astra, its newest flagship model and the first release under the GPT-6 name. The company described it as a generational leap in capability across software engineering, cybersecurity, scientific research, and computer use. The announcement arrived more than a year after GPT-5 and nearly two months after GPT-5.6 Sol, the last major iteration of the previous generation.

President Greg Brockman told reporters the launch marked entry into what OpenAI called the AGI era, language the company has used cautiously in the past but applied more directly to Astra. The model is designed to carry out multistep agentic tasks, build working websites, and produce polished documents, spreadsheets, and presentations from high-level instructions.

Agentic coding and computer use at the centre

OpenAI especially highlighted Astra's software engineering and agentic capabilities, areas where Anthropic has built a strong enterprise following. The company said Astra can navigate desktop applications and web browsers, complete complex coding tasks in real codebases, and operate with substantially less human intervention than prior models.

On OSWorld V2-Offline, a benchmark for work across desktop applications, OpenAI reported a score of 72.6%, up from 65.7% for GPT-5.6 Sol, with average task completion time falling from roughly 75 minutes to 40. The model also integrates an updated Codex harness that retains reasoning between turns and uses a notes feature rather than compaction to preserve context across long agent runs.

Limited access at launch

Despite the public announcement, Astra was not immediately available to all users. OpenAI said the model rolled out first to enterprise customers in its Daybreak cybersecurity programme and to organisations in its Trusted Access Program. ChatGPT Plus, Pro, Business, and Enterprise subscribers, along with API and AWS customers, were told to expect access in the coming days.

Enterprise administrators can enable Astra for their workspaces, though access is off by default at launch. The staged release reflects both compute constraints and the company's desire to monitor a model it has classified under its most advanced cybersecurity tier before opening it widely.