- Η OpenAI establishes GPT-5.6 Luna as the default model for Free and Go users, offering unlimited text messages without rate limits.
- Plus and Pro subscribers gain access to GPT-5.6 Sol, which incorporates a thinking level slider and reduced errors in numbers and dates.
- A new “Think” button is introduced to enable higher-level reasoning, while restrictions on file and image uploads remain.
The new landscape in the Free tier
OpenAI's official announcement is turning the tables on free artificial intelligence, bringing GPT-5.6 Luna to the screens of millions of users. If until yesterday you were counting your messages to avoid hitting a wall of restrictions, now you can write freely, as text-based rate limits are completely removed for Free and Go accounts.
This doesn't mean that the floodgates have been opened for every type of data, however. According to data published by MacRumors , restrictions still apply to file uploads, images, and other tools in the ChatGPT ecosystem.
At the same time, free users gain access to the new “Think” button. This feature is not just an aesthetic cosmetic, but activates higher-level reasoning mechanisms when the problem requires deeper analysis beyond a simple, automatic answer.
What's changing for Plus and Pro users
If you pay for a subscription, your experience shifts from simple speed to maximum accuracy. The new GPT-5.6 Sol comes with improved reliability on real data, drastically reducing illusions in dates, numbers, sources, and rules.
The biggest addition here is a special slider that lets you set exactly how much thought you want the model to devote to each question, saving you from unnecessary, mindless analysis when you just need a quick, sharp answer.
OpenAI has tried to tame the flow of text, preventing the model from adding unnecessary information when it's not asked for. In addition, Sol is programmed to provide helpful corrections when a simple agreement with the user is not enough, eliminating the frequent habit of older versions of caressing the interlocutor's ears.
The strategy behind the new version
Beyond the technical features, OpenAI is investing in consistency of experience. The Instant and Thinking versions have a more homogenized tone and behavior, so you don't feel like you're completely changing your digital character every time you experiment with different modes.
It's worth noting that these changes are rolling out gradually, with Luna becoming the core of iOS and Mac apps . According to the company itself, the upgrade only concerns the Chat part, leaving the Work and Codex workspaces intact.
If you want to delve deeper into how language models impact your daily productivity, take a look at our recent article on new trends in AI productivity tools.
Our opinion at TechNoid
At TechNoid, we believe that OpenAI’s move to give unlimited text communication in the Free tier is not out of pure charity, but rather a necessary line of defense against the competition that is squeezing it. When alternatives offer powerful features for free, strict message limits have acted as a brake on loyalty. With GPT-5.6 Luna, the company is keeping casual users in its ecosystem, building a huge pool of data and loyalty, while keeping Sol’s heavy cards for subscribers’ wallets.
FAQ about GPT-5.6 and changes to ChatGPT
What is the default model for ChatGPT free users?
The default model for Free and Go users is now GPT-5.6 Luna.
Are there text message restrictions for free users?
No, OpenAI offers unlimited text messages without text-based rate limits in the Free tier.
What features are still limited for Luna?
Restrictions remain as usual on file uploads, image management, and other tools.
What does the new “Think” button offer in ChatGPT?
It enables a higher level of reasoning from the model when deeper processing of the query is required.
What model do Plus and Pro subscribers have access to?
Plus and Pro subscribers gain access to the upgraded GPT-5.6 Sol.
What does the new slider do in GPT-5.6 Sol?
It allows users to choose how much thought ChatGPT will put into answering each question.
Where do the changes in the Sol version apply?
The changes concern exclusively the Chat environment and the applications for iPhone , iPad and Mac, leaving Work and Codex untouched.
