Subscribers on ChatGPT Plus, Pro, Business and Enterprise began getting GPT-6 on October 7, and Go and free users were scheduled to follow on October 8, according to OpenAI. The paid plans run a model called GPT-6 Sol, while Go and free accounts get GPT-6 Luna, a cheaper sibling tuned for fast replies.
Alongside the model comes a new way for ChatGPT to answer, which OpenAI calls Intelligent UI: responses that can arrive as charts, forms and tappable buttons rather than only paragraphs of text.
Sol for paid plans, Luna for free and Go
OpenAI’s post, titled GPT-6 and Intelligent UI for everyone and dated October 7, says the rollout began that day in the Chat tab for Plus, Pro, Business and Enterprise, with Enterprise access depending on workplace admin settings. Free and Go expand the following day. Sol powers the first group and Luna the second, and both are tuned for everyday conversation. The post adds that the models behind ChatGPT Work and Codex are unchanged by this release.
The ChatGPT release notes give the same schedule under the entry for October 7, 2026, and add a detail the announcement leaves out: the Pro reasoning option continues to use GPT-6 Astra and does not support Intelligent UI. Neither OpenAI page mentions the Education plan, and neither states usage limits for free accounts. Engadget’s report of the rollout, dated October 8, said Go and free users were expected to receive access “sometime today” and described Luna as less capable than Sol, which is the practical tradeoff of the split: free users get the GPT-6 label and the interface change, but not the larger model.
Intelligent UI and what it changes in a chat
Intelligent UI lets ChatGPT respond with visuals, tappable buttons, forms, charts and other interactive elements instead of a block of text. OpenAI’s post says it can also build small tools on request, such as a calculator or a game, and calls the feature “a significant shift in how people interact with ChatGPT.” The release notes say the format is chosen automatically, so a simple question can still get a plain-text answer, and examples include side-by-side comparisons and diagrams.
The Search Engine Journal write-up adds specifics on reach and controls. Intelligent UI is gradually arriving on the web and in updated apps, works from the Instant reasoning level through Extra High, and is not supported by older ChatGPT desktop apps for macOS and Windows. On the web, users can switch off a “Layout and visuals” setting, though some visual elements may still appear. It also reports OpenAI’s claim that for web-search questions, GPT-6 Instant starts answering 44 percent sooner on average than GPT-5.6 Instant.
The model can also begin answering while its reasoning or tool use is still running, then add findings later, and it can spread a response across several messages, according to the release notes and Engadget. OpenAI says the shorter wait is meant for complex tasks, where a reply that waits for every reasoning step to finish can feel slow.
The limits of the rollout
OpenAI’s post is headlined “for everyone,” but its pages name six plans: Free, Go, Plus, Pro, Business and Enterprise. Within them, the Pro reasoning option stays on Astra, the models behind ChatGPT Work and Codex are unchanged, and, per Search Engine Journal, GPT-5.6 Sol remains available separately in the model menu while GPT-6 replaces the “Latest” option. Education accounts, which the release notes treat as a separate plan with its own model options, are not mentioned in the announcement. The Education plan is not listed on the October 7 release-notes entry or in the post, so whether and when those accounts receive GPT-6 is not stated on either page, which leaves the Education plan as the one named ChatGPT plan with no stated GPT-6 date in the pages OpenAI published this week.
Sol and Luna before the ChatGPT rollout
The two models are not new to OpenAI’s lineup, and the October rollout is their second step into ChatGPT. MacRumors reported that OpenAI announced GPT-6 Sol and Luna on September 22, following GPT-6 Astra, for ChatGPT Work and Codex and not yet for Chat mode. Sol, it said, is aimed at everyday work and costs less than Astra, while Luna is the cheaper option for fast, high-volume use.
MacRumors listed API prices of $2 per million input tokens and $10 per million output tokens for Sol, and $0.10 and $0.50 for Luna, down from $0.20 and $1.20. OpenAI also claimed Sol makes about half as many mistakes as GPT-5.6 Sol, and the same report said Luna reached Free and Go users in the desktop app that day.
What the October 7 and 8 rollout adds is the Chat tab, the screen where most ChatGPT use happens, along with a free-tier model whose message limits OpenAI has not published on either page, so the practical value of Luna to free users will depend on a number the company has yet to state.
This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.
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