SAN FRANCISCO, CALIFORNIA / RankWire.AI / – OpenAI is increasing the accessibility of ChatGPT for Free and Go users by eliminating text chat restrictions under GPT-5.6 Luna. The company announced that unlimited text interactions will begin next week, with safeguards against misuse still in place. During this rollout, Luna is also becoming the default model for these plans. Simultaneously, Free users will get a Think button, enabling the model to dedicate extra time to reason through more complex questions before responding.
This expanded allowance applies to regular text exchanges rather than all features within ChatGPT. Limits for image creation, file uploads, and other tools that demand additional computational resources will continue to be enforced. OpenAI indicated that the Think button will be available alongside unlimited text access next week. When a question benefits from deeper reasoning, users can activate it. This update broadens the core conversational capabilities for Free and Go accounts while maintaining separate restrictions on other functionalities and services.
GPT-5.6 comprises multiple models, including Luna, Sol, and Terra, each serving different performance requirements. Luna is recognized as the faster and more cost-effective option within the family. According to OpenAI, approximately one billion users utilize ChatGPT weekly for tasks such as research, planning, writing, and searching. The recent update designates Luna as the main ChatGPT model for Free and Go plans. The other GPT-5.6 variants remain accessible within products designed for varied workloads and access levels.
Free access increases while tool restrictions stay in place
Subscribers of ChatGPT Plus and Pro are now receiving an upgraded GPT-5.6 Sol model for both routine and more complex reasoning tasks. The company stated that Sol now provides more targeted responses and minimizes unnecessary details when shorter replies suffice. Paid users also gain a reasoning slider on web, mobile, and desktop platforms. This feature allows users to control how much processing power the model applies to each request, which is useful for research, coding, writing, planning, and other tasks requiring varying levels of reasoning.
OpenAI has shared results from internal evaluations focused on factual accuracy within its newest models. These tests covered financial, medical, and legal questions that demanded detailed factual responses. The company reported a reduction of about 62% in answers containing at least one factual error with GPT-5.6 Luna compared to GPT-5.5 Instant. For GPT-5.6 Sol, the decrease was approximately 68% under the same testing conditions. Improved performance was also noted in responses involving dates, numbers, sources, rules, and assumptions when these details impacted the final answer.
Enhanced safeguards for younger users integrated into new models
Safeguards have been added to the GPT-5.6 models for users under 18, as identified by the system. These protections restrict romantic roleplay, age-restricted challenges, and claims that might encourage users to replace real-world relationships. Additional boundaries limit content related to sexual material, eating disorders, dangerous activities, restricted goods, and graphic violence. OpenAI explained that it implemented further assessments for responses involving younger users. These safety measures will remain in effect when unlimited text conversations are available to Free and Go accounts under the expanded ChatGPT access.
The new rollout applies solely to the main ChatGPT service and does not alter other products utilizing GPT-5.6. Versions of GPT-5.6 Sol used in ChatGPT Work and Codex are unaffected by this update. Currently, Plus and Pro subscribers can access the updated Sol model along with the new reasoning controls. Free and Go users are being provided Luna as their default model this week. The availability of unlimited text conversations and the Think button will follow next week, though separate limits still apply to images, uploads, and other resource-heavy tools.