SAN FRANCISCO, CALIFORNIA / RankWire.AI / – OpenAI is expanding access for Free and Go users by removing the previous restrictions on text chat within GPT-5.6 Luna. The company announced that unlimited text exchanges will be available starting next week, although safeguards against misuse will remain in place. During this rollout, Luna is also becoming the default model for these plans. Additionally, Free users will soon see a new Think button, enabling the model to dedicate extra time to more complex reasoning before providing an answer.
This increased allowance applies specifically to standard text-based conversations and does not extend to all functions within ChatGPT. Limits will continue to be enforced on image generation, file uploads, and other tools that require more significant computing resources. OpenAI clarified that the Think button will be introduced alongside the unlimited text feature next week, allowing users to activate it when their queries demand additional reasoning time. This update broadens the core conversational capabilities for Free and Go accounts, while keeping separate restrictions on other tools and services.
The GPT-5.6 family includes several models, such as Luna, Sol, and Terra, tailored for different performance needs. Luna is designed as the faster and more cost-effective option within the lineup. According to OpenAI, approximately one billion people now utilize ChatGPT weekly for diverse activities like research, planning, content creation, and search. The recent update designates Luna as the primary ChatGPT model for Free and Go users, while other GPT-5.6 models remain accessible through various plans suited to different workloads and access levels.
Broader free access coupled with maintained tool restrictions
Subscribers of ChatGPT Plus and Pro are now using an updated GPT-5.6 Sol model for routine tasks and more intricate reasoning. OpenAI explained that the Sol model delivers more precise responses and minimizes unnecessary details when shorter answers are sufficient. Paid members also gain a new reasoning slider on web, mobile, and desktop platforms, allowing them to customize how much processing power the model applies to each request. This feature is useful for research, coding, writing, planning, and other activities that benefit from varying levels of reasoning.
OpenAI has also shared results from its internal assessments targeting the factual correctness of its latest models. These tests focused on financial, medical, and legal questions requiring detailed, accurate answers. The company reported that GPT-5.6 Luna reduced answers with at least one factual error by about 62% compared to GPT-5.5 Instant. Meanwhile, GPT-5.6 Sol demonstrated a decrease of roughly 68% in such inaccuracies under the same testing conditions. OpenAI highlighted improvements in responses involving dates, figures, sources, rules, and assumptions when these details influenced the overall reply.
Enhanced safety features now protect younger users
The GPT-5.6 models incorporate new safeguards aimed at users believed to be under 18. These protections restrict responses related to romantic roleplay, age-restricted challenges, and statements that might promote replacing real-world relationships. Additional boundaries are in place for topics such as sexual content, eating disorders, dangerous activities, restricted goods, and graphic violence. OpenAI stated that it has implemented further evaluations for replies involving younger users. These safeguards will also be active when unlimited text conversations become accessible to Free and Go accounts through the expanded ChatGPT service.
This rollout applies solely to the main ChatGPT platform and does not affect all products utilizing GPT-5.6. Versions like GPT-5.6 Sol in ChatGPT Work and Codex remain unchanged in this update. Users of Plus and Pro can now access the updated Sol model along with the new reasoning controls. For Free and Go users, Luna will serve as the default model this week. While unlimited text conversations and the Think button will be available next week, separate restrictions on images, uploads, and other resource-heavy tools will stay in place.