ChatGPT is making a major change for people who use the free version of the service. OpenAI is expanding access to unlimited text chats, meaning free users will soon be able to have normal text conversations without worrying about the message limits that have restricted usage in the past.
The change comes with a new model called GPT-5.6 Luna, which will become the default model for Free and Go users. OpenAI is also adding a new Think button that allows users to give ChatGPT more time to work through difficult questions.
This is a big change because ChatGPT has traditionally placed limits on how much free users can use its most advanced models. With more people now depending on AI for school, work, research, writing and everyday questions, OpenAI is clearly trying to make ChatGPT more useful to a much larger number of people.
What Is Changing on ChatGPT?
The biggest change is simple, free users are getting unlimited text chats with GPT-5.6 Luna.
Previously, free users had to worry about reaching usage limits after sending a certain number of messages. Those limits could be frustrating, especially for people who use ChatGPT for several hours while studying, working or researching.
Under the new system, ordinary text conversations will no longer have the same message limit. OpenAI says unlimited text chats will be available to Free and Go users, although abuse prevention rules will still apply.
However, unlimited does not mean every ChatGPT feature is unlimited. OpenAI says limits will still apply to things such as file uploads, images and other tools.
GPT-5.6 Luna Is Coming to Free Users
Another important part of the update is GPT-5.6 Luna.
OpenAI has made GPT-5.6 Luna the default model for Free and Go users. This replaces GPT-5.5 as the standard model for everyday conversations.
Luna is designed to handle normal ChatGPT tasks quickly while still providing stronger answers. These tasks include asking questions, getting explanations, writing, planning, research and many other things people normally use ChatGPT for.
This means free users are not simply getting more messages with an older model. They are also getting access to a newer model designed to provide better everyday answers.
What Is the New Think Button?
OpenAI is also introducing a new Think button for Free and Go users.
The idea is very simple. Some questions are easy and can be answered quickly, while others require more careful reasoning.
For example, asking ChatGPT to define a word does not require much thinking. But asking it to solve a difficult maths problem, compare several business options or explain a complicated research question may require more effort.
The Think button gives free users a way to ask ChatGPT to spend more time working through a difficult question before giving an answer.
OpenAI says the feature will use GPT-5.6 Luna and will be available to Free and Go users as the rollout continues.
Will Free Users Get Everything for Free?
No.
This is one of the most important things to understand about the announcement.
OpenAI is removing the normal limits on text conversations, but it is not removing every usage limit from ChatGPT.
File uploads, image generation, images and other tools can still have limits. This means a person who wants to chat with ChatGPT through text all day may be able to do so, but someone who wants to upload hundreds of files or generate large numbers of images may still encounter restrictions.
This approach allows OpenAI to give users much more freedom for basic conversations while continuing to control access to features that require more computing power.
What Is Changing for Plus and Pro Users?
OpenAI is also improving ChatGPT for people who pay for Plus and Pro.
These users are getting an updated GPT-5.6 Sol model. OpenAI says the new version is designed to provide more focused answers and better factual reliability.
The company says GPT-5.6 Sol is built for tasks such as research, planning, writing, advice, web research and decision making. It is intended to give short answers when a question is simple while providing more detail when a task is complicated.
Plus and Pro users are also getting a thinking slider.
What Does the Thinking Slider Do?
The thinking slider gives paid users more control over how much effort ChatGPT uses to answer a question.
If you are asking something simple, you can keep the thinking level lower and get a faster response.
If you are working on a difficult problem, you can increase the thinking level and allow the model to spend more effort on the task.
This is useful because not every question needs the same amount of reasoning. A quick question should not take a long time, while an important decision or difficult research problem may benefit from deeper thinking.
OpenAI says the slider will be available to Plus and Pro users on the web, mobile and desktop versions of ChatGPT.
OpenAI Says the New Models Make Fewer Factual Errors
OpenAI is also highlighting improvements in accuracy.
According to the company’s internal evaluation, responses with at least one factual error were about 62 percent less common with GPT-5.6 Luna and 68 percent less common with GPT-5.6 Sol compared with GPT-5.5 Instant.
These numbers come from OpenAI’s own testing, so they should not be treated as proof that the models will always be accurate. AI can still make mistakes, and important information should still be checked against reliable sources.
However, better factual performance is important because people increasingly use ChatGPT for research, work, education and decisions.
Why Is OpenAI Making ChatGPT Free and Unlimited?
There is a much bigger business story behind this update.
ChatGPT has grown into one of the world’s most widely used AI products. OpenAI says about one billion people now use ChatGPT every week.
At this scale, keeping users engaged is extremely important.
Giving free users unlimited text chats could make ChatGPT a much more regular part of people’s daily lives. Instead of opening the app only when they have a few questions to ask, users may begin treating ChatGPT like a normal digital assistant that is always available.
It also puts pressure on competing AI services.
What Does This Mean for the AI Competition?
The AI chatbot market is becoming increasingly competitive.
Google, Anthropic, Microsoft, xAI and several other companies are all trying to attract users with powerful AI models and free access.
OpenAI has a major advantage because ChatGPT already has a huge user base. Giving free users more access could make it harder for competitors to convince people to switch to another AI assistant.
The move could also increase expectations across the entire industry. If people become used to unlimited text conversations on ChatGPT, they may begin expecting similar access from other AI services.
Is ChatGPT Now Completely Unlimited?
No, and this is worth repeating.
The announcement is specifically about unlimited text chats for Free and Go users. Other features can still have limits.
There are also abuse prevention rules. OpenAI says the unlimited access is subject to safeguards designed to prevent misuse.
So users should not think of the change as unlimited access to every ChatGPT feature.
It is better understood as unlimited everyday text conversations, with separate limits for more demanding tools.
When Will the New Features Arrive?
The rollout is happening in stages.
OpenAI says the updated GPT-5.6 Sol is available to Plus and Pro users first, while GPT-5.6 Luna is becoming the default model for Free and Go users.
Unlimited text chats and the new Think button are expected to reach Free and Go users during the following week, subject to OpenAI’s rollout and safety controls.
This means some users may see the changes before others.
What This Means for Everyday ChatGPT Users
For the average free user, the biggest benefit is freedom.
You will be able to ask more questions without constantly worrying about hitting a message limit. Students can use ChatGPT while studying, workers can use it for writing and planning, and ordinary users can ask questions throughout the day without having to carefully count their messages.
The Think button is also useful because it gives free users a simple way to tell ChatGPT that a question needs more attention.
Together, these changes make the free version of ChatGPT much more capable than before.
The Bottom Line
ChatGPT is now offering unlimited text chats to free users, and the change could become one of OpenAI’s most important moves as the AI race becomes more competitive. Free and Go users are getting GPT-5.6 Luna as the default model, along with a new Think button for harder questions, while Plus and Pro users are receiving an improved GPT-5.6 Sol and a thinking slider.
The most important detail is that unlimited text chats do not mean unlimited access to everything in ChatGPT. Files, images and other tools can still have limits, so users should expect different rules for different features.
Still, the direction is clear. OpenAI is making ChatGPT easier to use for everyday conversations and giving more people access to stronger AI without requiring them to pay. With ChatGPT already reaching about one billion weekly users, this move could make AI assistants an even bigger part of how people study, work, research, plan and solve problems every day.