OpenAI launches GPT-6 in ChatGPT with 'Intelligent UI' and interactive answers; Sol for paid users, Luna for free

OpenAI is rolling out GPT-6 to all ChatGPT users, pairing the model with a new interface feature called "Intelligent UI" that replaces plain-text answers with interactive elements such as charts, buttons, and forms. Paying customers get GPT-6 Sol, and free users get GPT-6 Luna, according to The Decoder's report on OpenAI's announcement on October 7, 2026.

Rollout schedule

• Today (Oct 7): Plus, Pro, Business, and Enterprise users, globally.
• One day later: Free and Go users.

OpenAI has published a system card for the release.

Intelligent UI

Intelligent UI changes how ChatGPT formats responses. The output adapts automatically to the question:

• Comparisons appear side by side.
• Explanations can become interactive charts.
• Answers can include buttons, graphics, and forms.
• Users can have small tools built inside the chat, such as a savings calculator or a game.

Google shipped a comparable feature to the Gemini chatbot in May under the name "Neural Expressive," according to The Decoder.

Responding while thinking

GPT-6 can also begin responding while it is still reasoning. OpenAI says this reduces wait times by 44 percent and can produce better answers. The company also claims that in internal tests, GPT-6 outperformed its predecessor, GPT-5.6, on difficult web searches using this method. These figures come from OpenAI and have not been independently verified.

Not yet disclosed

The source material does not include the following:

• Context window size: not yet disclosed
• API pricing per 1M tokens: pricing not yet disclosed
• Parameter count: not yet disclosed
• Training cutoff date: not yet disclosed
• Standard benchmark scores (MMLU, HumanEval, etc.): not yet disclosed
• Differences in capability or limits between Sol and Luna: not yet disclosed

Whether GPT-6 Sol and Luna will be available through the API, and under what version strings, is also unconfirmed.

What this means

The interface is now part of the product, not just a wrapper around model output. By generating UI elements as answers, OpenAI is moving ChatGPT closer to an application platform, and the in-chat mini apps point to users building lightweight tools without leaving the conversation. Google's earlier Gemini feature suggests the major chatbot vendors are converging on this approach.

The two-tier model split is the other notable change. Putting free users on Luna and paying users on Sol continues the pattern of tying model capability to plan, but without published benchmarks or limits, the size of the gap is unknown.

The 44 percent latency claim and the GPT-5.6 comparison both rest on OpenAI's internal testing. Until the system card details are examined and third-party evaluations appear, treat them as vendor claims. Developers should wait for API availability and pricing before planning migrations.