GPT-6 Astra and Intelligent UI: ChatGPT gets a new heart

What is new

OpenAI has launched GPT-6, also called Astra, which replaces the GPT-5 series. It was presented on September 3, 2026, and started with selected enterprise and security customers. It has since rolled out to paying ChatGPT users. At the same time, the media are talking about Intelligent UI, where ChatGPT can turn an answer into an interactive tool instead of just text. I have not been able to find OpenAI's own detailed description of Intelligent UI. That part is therefore based only on the headline from Digital Trends and on information that newer models can create explanations and visualizations you can click in.

Astra is built especially to work autonomously on a computer: controlling programs and browsers and solving longer tasks with little human help.

What is clever

Instead of a long text, you can get something you can play with. If you ask about a budget or an explanation, for example, the answer can become a small tool where you change the numbers yourself and see the result immediately.

Astra can also create documents, spreadsheets, presentations, code and entire websites. OpenAI reports improvements over GPT-5.6 Sol: 41.4 percent on multi-step tasks, 74.1 percent on advanced programming, 64.6 percent on scientific tasks and 97.6 percent on math. These are OpenAI's own figures and have not yet been independently verified. One outlet writes that Astra scores 99.9 percent on the ARC-AGI-3 test versus 7.8 percent for GPT-5.6 and 30.2 percent for Claude Opus 5. The test measures whether a model can solve entirely new problems. The same reviewer stresses, however, that the model is not at human level and can still make up facts and overlook instructions.

Cheaper or better?

Better, it seems, but not necessarily cheaper. For ordinary users, Astra is included in the existing ChatGPT Plus subscription at $20 a month (about DKK 140), albeit with limited usage. So there is no extra cost to try it. GPT-6 Pro, which builds on Astra, is available on the Pro subscriptions at $100 and $200 a month as well as Business and Enterprise.

For developers, the API costs $10 per million tokens (pieces of text) in and $50 per million tokens out. A fast version is about 2.5 times faster and costs double: $20 and $100. I have not been able to confirm the price relative to GPT-5.6 and competitors such as Claude and Gemini. The size of the model's context window, meaning how much it can remember at once, is not stated in the sources.

What it is good at

Astra suits those who want AI to do the work and not just give advice: make a presentation, build a spreadsheet, fix code or research a topic over several steps. The interactive format is well suited to calculations, comparisons and explanations where you want to experiment.

For businesses, the model is also available via Microsoft Azure and AWS Bedrock. On Business and Enterprise, Astra is turned off by default, so an administrator must enable it. Free users have not been given access, and nothing has been announced about Denmark or the EU specifically. It is therefore worth checking what your own account can do.