SAN FRANCISCO, CALIFORNIA / RankWire.AI / – OpenAI is broadening access for Free and Go users by offering unlimited text conversations powered by GPT-5.6 Luna. The company announced that this update will commence next week and will include safeguards to prevent misuse. During this rollout, GPT-5.6 Luna will be the default model for these users. Additionally, free users will gain a Think button, providing extra time for the model to analyze complex queries before responding.
This unlimited access specifically pertains to text-based exchanges within ChatGPT. Limits for file uploads, image generation, and other specialized tools requiring extra processing will remain unaffected. The introduction of the Think feature will occur alongside the expanded text allowance next week. It enables Luna to dedicate more time to reasoning before delivering a response. As a result, ChatGPT users on Free and Go plans will enjoy enhanced access to core chat functions, though not unlimited use of every feature available.
GPT-5.6 comprises Luna, Sol, and Terra, each tailored for varying levels of performance and computational needs. Luna is positioned as the faster, more cost-effective choice within the family. According to OpenAI, ChatGPT now serves approximately one billion users weekly across search, research, planning, writing, and other activities. The latest rollout places Luna at the forefront of the standard experience for Free and Go accounts, while maintaining distinct usage policies for tools outside regular text interactions.
Paid Subscribers Receive Enhanced GPT-5.6 Sol Controls
Users subscribed to ChatGPT Plus and Pro now benefit from an improved version of GPT-5.6 Sol for their daily interactions. Sol is capable of providing swift responses as well as supporting deeper reasoning within paid plans. The company stated that this updated model offers more targeted replies and avoids unnecessary details when shorter responses suffice. Subscribers on Plus and Pro plans will also find a new reasoning slider available across web, mobile, and desktop platforms. This feature allows users to regulate how much processing power ChatGPT allocates for tasks like research, planning, writing, and coding.
Internal testing also indicates a reduction in factual inaccuracies with the latest models. The evaluations included prompts related to finance, healthcare, and legal topics that demand precise factual responses. Results showed approximately 62% fewer responses containing at least one factual error for GPT-5.6 Luna compared to GPT-5.5 Instant. Similarly, GPT-5.6 Sol demonstrated a decline of about 68% under the same tests. The company also highlighted improvements in handling dates, numbers, sources, rules, and assumptions, especially when these details influence the accuracy of responses.
Safety Protocols Persist Throughout Expanded ChatGPT Access
The newest models include additional protections for users identified as under 18. The safeguards address issues such as romantic roleplay, age-restricted challenges, and claims that could substitute real-life relationships. They also impose limits on sexual content, eating disorders, hazardous activities, restricted substances, and graphic violence. The company explained that new assessments for responses involving younger users have been introduced. While unlimited text conversations for Free and Go accounts will continue, they will remain under the platform’s existing abuse prevention measures.
This update primarily targets the core ChatGPT experience and does not alter other GPT-5.6-powered products. The GPT-5.6 Sol versions used in ChatGPT Work and Codex will stay unchanged for now. Paid subscribers can access the updated Sol model and reasoning controls immediately. Meanwhile, Free and Go users will see Luna as their default model starting this week. The unlimited text chats and Think button will be available next week, with other tools like uploads and images continuing to operate under separate usage limits.
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