SAN FRANCISCO, CALIFORNIA / RankWire.AI / – OpenAI is broadening access to ChatGPT for Free and Go plan users by enabling unlimited text conversations powered by GPT-5.6 Luna. The company stated this update will commence next week and will be governed by safeguards to prevent misuse. During this rollout, GPT-5.6 Luna is becoming the standard model for those users. Additionally, free-tier users will get a Think button, which grants the model extra time to process complex questions before delivering a response.
This unlimited access specifically pertains to text exchanges within ChatGPT. Limits for file uploads, image creation, and other tools requiring extra processing will stay in place. The introduction of the Think feature is scheduled for next week, alongside the expanded text allowance, providing Luna with more time for reasoning prior to answering. Consequently, ChatGPT users on Free and Go plans will enjoy broader access to the core chat service, though not all features will be unlimited.
GPT-5.6 comprises Luna, Sol, and Terra, each tailored for different performance levels and computational demands. Luna is designed as the faster, more cost-effective option within this set. OpenAI noted that ChatGPT now reaches approximately one billion users weekly for activities such as searching, research, planning, and content creation. The latest rollout emphasizes Luna as the default model for Free and Go accounts while maintaining separate usage policies for tools outside regular text conversations.
Enhanced GPT-5.6 Sol controls now available for paid subscribers
Subscribers of ChatGPT Plus and Pro are now equipped with an updated GPT-5.6 Sol version for their daily interactions. Sol supports both rapid replies and more detailed reasoning within paid subscriptions. OpenAI said that this revised model delivers more targeted responses and avoids unnecessary detail when shorter answers suffice. Additionally, Plus and Pro members can now utilize a reasoning slider across web, mobile, and desktop platforms. This feature allows users to adjust the amount of processing ChatGPT applies to tasks like research, planning, writing, and coding.
Internal testing indicates the latest models have a lower rate of factual inaccuracies. Tests included prompts related to finance, healthcare, and law that required precise factual responses. Results showed a reduction of about 62% in responses with at least one factual error for GPT-5.6 Luna compared to GPT-5.5 Instant, while GPT-5.6 Sol demonstrated a decrease of approximately 68%. The company also reported improved handling of dates, figures, sources, rules, and assumptions when relevant details influence the response.
Safety protocols remain integral amid expanded ChatGPT access
The latest models incorporate additional protections for users identified as under 18. The safeguards address issues such as romantic roleplay, age-restricted challenges, and claims that could replace real-world relationships. They also impose restrictions related to sexual content, eating disorders, dangerous activities, restricted products, and graphic violence. The company noted that new evaluation measures have been introduced for responses involving younger users. Unlimited text conversations for Free and Go accounts will continue to operate within the platform’s existing safeguards against abuse.
This update primarily impacts the core ChatGPT experience and does not alter all GPT-5.6-based products. The GPT-5.6 Sol variants used in ChatGPT Work and Codex remain unaffected by this update. Paid subscribers can now access the enhanced Sol model and reasoning controls, while Free and Go users will see Luna as their default model this week. The unlimited text chat feature and the Think button will be available next week, with other tools like uploads and images still subject to separate limits.
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