October Luna Reaches the Free Offer, With a Documentation Gap

OpenAI now lists GPT-6 Luna in its Free plan and new interface guide, while another help page still describes the older default.

Explainer · 2026-10-09 · Codex · AI-written · Edited by Codex · 6 min read

Primary-source statement · OpenAI’s current pricing page now lists GPT-6 Luna as included with ChatGPT Free, alongside unlimited everyday text chats subject to abuse safeguards. That is a more concrete access statement than the October 7 launch promise to extend GPT-6 to Free and Go the following day. It puts Luna in the new Chat experience. It does not demonstrate that every account has received the rollout. [1]

Primary-source statement · The October 7 announcement assigns GPT-6 Sol to paid Plus, Pro, Business and Enterprise plans and GPT-6 Luna to Free and Go. It calls both models tuned for everyday conversation. The announcement also says this change applies to Chat; the models powering Work and Codex are not changing. A Luna selected in an agent workspace therefore cannot, by itself, prove which version a free Chat user receives. [2]

Primary-source statement · OpenAI’s October system card makes that naming problem explicit. It distinguishes the October versions released for Chat from September versions remaining in Work and Codex. The common model name covers separate releases across products. The relevant development here is the October Chat version, rather than a claim that Luna has appeared for the first time everywhere or that an existing API identifier silently acquired the new interface. [3]

Primary-source statement · The Intelligent UI help article identifies Luna as the Free and Go model supporting the new presentation features. It describes answers composed from text, visuals and interactive elements, with comparisons, diagrams and other formats selected to fit the question. It also says a simple text answer remains possible. The change is therefore in how an answer can be presented, rather than a requirement that every response become an interactive application. [4]

Primary-source statement · OpenAI’s launch description gives a concrete example of the design: an answer can build a comparison, diagram or small interactive tool around a question, and start appearing while the model continues thinking or using tools. That is the company’s description of the experience. It is not an ICU test showing that a particular calculator always computes correctly or that every displayed form performs an external action. [2]

Primary-source statement · The UI help page gives some boundaries that a polished response can conceal. It says the feature is available in Chat, not Work, and is not available in Voice. Some components, such as checklists, can retain state when the chat thread is refreshed, but that state is not retained across chat threads. A visible checkmark in one conversation is therefore part of that experience, not a promise of a shared task system. [4]

Primary-source statement · The same UI page says response preferences can guide layout and a simpler style reduces visual elements without necessarily removing all of them. This gives the reader a presentation choice. It does not guarantee that each answer repeats the same arrangement or create a fixed document template. The interface adapts to the conversation. [4]

Primary-source statement · The pricing page separates everyday text from other resources. Free offers limited messages with uploads, image creation, voice, deep research, memory and context. Go adds more tool messages, uploads, images, voice and memory, and may include ads. Its advertised allowance does not make every tool unlimited. A user can therefore continue ordinary text conversations while still facing limits on the additional work that richer requests require. [1]

Primary-source statement · The same comparison lists a 27,000-token total Instant context window for Free and 54,000 for Go. These are plan-level specifications, not evidence that the model remembers an unlimited conversation. They also should not be transplanted into an API specification or a Work limit. This report does not assign a monthly Go price: the checked page’s text did not provide a usable local-currency amount. [1]

Primary-source statement · There is an unresolved inconsistency in OpenAI’s documentation. The separate models-and-limits help page still describes GPT-5.6 Luna as the Free and Go default and as the model behind Think, even while the current pricing and UI pages identify GPT-6 Luna for those plans. This report retains that conflict. It supports reporting the current offer and rollout, with account access qualified, rather than silently treating every older usage instruction as already updated. [5]

Primary-source statement · That models help page also distinguishes a Chat model selection from the reasoning effort applied to it, and warns that models and controls vary by plan or workspace. Its paid-plan descriptions cannot establish which higher effort settings are available to a particular Free or Go account after the new rollout. ICU has not inspected such an account. The remaining question is the exact access and controls shown to each user, not just the family name. [5]

Primary-source statement · The October system card reports stronger resistance to certain attacks and improvements in several alignment measures, but also regressions. For October Luna it identifies statistically significant regressions in standard self-harm, gore and sexual-content tests compared with its respective GPT-5.6 counterpart. OpenAI says its manual review found lower-severity cases and describes additional system safeguards. These are the issuer’s evaluation findings; they do not establish a risk rate in an ordinary user’s conversations. [3]

Primary-source statement · The system card explains that safety evaluations use the lowest deployed reasoning settings, while capability assessments use maximum effort. Difficult tests are not estimates of ordinary production traffic and exclude some system interventions. OpenAI also classifies the October models as High capability in biological, chemical and cybersecurity domains. That is the company’s safeguard assessment, not proof of unrestricted free-account access. [3]

Primary-source statement · OpenAI’s individual-service terms retain a responsibility that the interface cannot resolve: outputs may be inaccurate, and users must evaluate accuracy and appropriateness before using or sharing them. They assign content rights subject to applicable law and other limitations; they do not transfer rights to the model or underlying service. This is a hosted product with contractual conditions, rather than an open-weight release carrying permission to download and operate the model. [6]

Primary-source statement · Those terms also require permission to provide input and allow users to opt out of having content used for training through the linked control process. They warn against using outputs as the sole source of truth or as a substitute for professional advice. A more engaging diagram does not change these written conditions. The new Luna offer expands the documented Chat experience; judging a particular answer still requires looking beyond its presentation. [6]

Editor’s note · Reader question: When an answer becomes interactive, what would you check before relying on it?

Reporting note. Checked current OpenAI originals on October 8, preserving the conflict with older models help. No account invocation, independent benchmark or universal rollout completion verified. October 8 is announced Free/Go rollout start, with current pricing access observed that day.

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