SAN FRANCISCO, CALIFORNIA / RankWire.AI / – OpenAI is expanding access for its Free and Go users by eliminating text chat restrictions under GPT-5.6 Luna. The company announced that unlimited text conversations will be available starting next week, with safeguards against misuse still in place. During this rollout, Luna will become the default model for these plans. Simultaneously, Free users will gain access to a new Think button, enabling the model to dedicate more time to complex reasoning before providing a response.
This increased allowance applies specifically to standard text chats, while limits on image generation, file uploads, and other resource-intensive features will remain in effect. OpenAI confirmed that the Think button will be introduced alongside the unlimited text feature next week. Users can activate it when a query benefits from additional reasoning. This update broadens ChatGPT’s core conversational capabilities for Free and Go accounts, while maintaining separate restrictions on other tools and services.
GPT-5.6 is composed of multiple models, including Luna, Sol, and Terra, each catering to different performance requirements. Luna is known as the faster, more cost-effective option within the lineup. According to OpenAI, approximately one billion people use ChatGPT weekly for activities such as research, planning, writing, and searching. The latest update designates Luna as the primary model for Free and Go users, while other GPT-5.6 variants remain accessible within plans tailored to various workloads and access levels.
Expanded free access paired with continued tool limitations
Subscribers of ChatGPT Plus and Pro will now have access to an updated GPT-5.6 Sol model for everyday use and complex reasoning tasks. OpenAI explained that Sol now delivers more targeted responses and minimizes extraneous details when shorter answers suffice. Paid users also gain a reasoning slider available on web, mobile, and desktop platforms, allowing them to control how much processing the model applies. This feature supports research, coding, writing, planning, and other activities requiring varied reasoning levels.
OpenAI shared results from internal testing focusing on factual accuracy in its newest models. These assessments involved financial, medical, and legal questions demanding detailed factual responses. The company reported a roughly 62% decrease in answers containing at least one factual error with GPT-5.6 Luna compared to GPT-5.5 Instant. The GPT-5.6 Sol model demonstrated an approximate 68% reduction under the same testing methodology. OpenAI also noted improvements in handling dates, numbers, sources, rules, and assumptions when these elements impacted the final reply.
New safeguards introduced to protect younger users
Safeguards have been added to the GPT-5.6 models specifically aimed at users believed to be under 18. These protections restrict content involving romantic roleplay, age-restricted challenges, and claims that could promote the replacement of real-world relationships. Additional boundaries limit sexual content, eating disorders, dangerous activities, restricted products, and graphic violence. OpenAI mentioned conducting extra evaluations for responses involving minors. These abuse safeguards will remain active when unlimited text conversations are accessible to Free and Go accounts under the expanded ChatGPT availability.
The rollout affects the main ChatGPT service but does not alter every product utilizing GPT-5.6. Versions of GPT-5.6 Sol used in ChatGPT Work and Codex remain unchanged in this update. Users subscribed to Plus and Pro can now access the enhanced Sol model and reasoning controls immediately. For Free and Go users, Luna will serve as the default model this week. Unlimited conversations and the Think button will be available next week, while separate limits on images, uploads, and other computational tools will continue to apply.
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