Today, OpenAI has introduced some new updates for ChatGPT to enhance the user experience and expand AI access to everyone.
We’re making better intelligence easier to access in ChatGPT for everyone:
– GPT-5.6 Sol now powers both Instant and deep reasoning for Plus & Pro users, delivering more factual, focused responses.
– Free & Go users get unlimited text chats with GPT-5.6 Luna starting tomorrow. pic.twitter.com/JXhmj5GLTH
— OpenAI (@OpenAI) August 6, 2026
New updates for ChatGPT
GPT-5.6 Sol improvements
For Plus and Pro users, the company has updated GPT-5.6 Sol in Chat to be more reliable with facts and provide more focused answers. There is also a new slider that lets you choose how much ChatGPT puts into each response.
GPT-5.6 Sol is updated to deliver more focused answers, adapts its level of detail to the question, avoids unnecessary formatting, and offers a helpful correction. For Pro & Plus users, the same model now powers both Instant responses and deeper reasoning, creating one consistent experience.
The updates to GPT-5.6 Sol in ChatGPT are designed to give you more direct responses, use tighter formatting, and avoid extra detail when it does not help. Meanwhile, the new GPT-5.6 Sol is designed to make fewer mistakes, especially when answers depend on dates, numbers, sources, rules or assumptions, by better using the sources it finds to answer your question.
OpenAI has revealed that in an internal evaluation of financial, medical and legal prompts requiring factual detail, responses containing at least one factual error were about 62% less common with GPT-5.6 Luna and 68% less common with GPT-5.6 Sol than with GPT-5.5 Instant.
Apart from this, ChatGPT Plus and Pro users can use the new Slider in ChatGPT on web, mobile, and desktop to choose how much thought ChatGPT puts into an answer. Users can keep it quick for everyday questions, or move the slider up for planning, research, writing, coding, or decisions that need more thought.
Expanding access for GPT-5.6 Luna
For Free & Go users, the company is updating the default model to GPT-5.6 Luna and expanding access with unlimited text chats.
There is a new Think button that lets you access higher reasoning for harder questions. Users can tap the new Think button to give GPT-5.6 Luna more time to work through the answer.
Availability
Plus and Pro users can access the updated version of GPT-5.6 Sol and the new slider in ChatGPT starting today. Since this version is optimised for everyday chats, it will only be available in the Chat experience in ChatGPT. The version of ChatGPT Sol that powers Work and Codex is not changing as part of this release.
GPT-5.6 Luna will become the default model for Free and Go users this week. Starting next week, they will also have unlimited text chats and access to a new Think button for harder questions. Limits will still apply for file uploads, images and other tools.
Safety
For users under 18, OpenAI has trained the model to avoid romantic roleplay, age-restricted challenges, and presenting itself as a substitute for real-world relationships. The company has applied age-appropriate boundaries around sexual content, eating disorders and body-image risks, age-restricted goods, dangerous activities, and graphic violence.
OpenAI has reinforced this training with system-level protections and has added new evaluations for how their models perform for users under 18.
