OpenAI is making a major change to ChatGPT by upgrading GPT-5.6 Sol for everyday conversations and removing text chat limits for free users. The update also brings a new reasoning slider for Plus and Pro subscribers, giving users more control over how much processing ChatGPT uses for each response.
OpenAI says the revised GPT-5.6 Sol should provide more focused answers, adjust detail based on the question, and avoid unnecessary formatting. For simple questions, ChatGPT should respond more directly, while research, planning, writing, and coding tasks should still receive fuller answers when extra detail helps.
GPT-5.6 Sol now powers paid ChatGPT chats
OpenAI says GPT-5.6 Sol will now power both Instant and deeper reasoning experiences for Plus and Pro users. Instead of switching between separate modes, users will get one model with a slider that controls how much reasoning effort ChatGPT puts into a response.
The slider will be available across ChatGPT on web, mobile, and desktop. Users can keep the reasoning level low for everyday questions or increase it for research, planning, writing, coding, and more complicated decisions.
OpenAI also says the updated GPT-5.6 Sol performs better on questions involving dates, numbers, rules, sources, and assumptions. In an internal evaluation covering finance, medicine, and law, the company says responses containing at least one factual error were 68% less common than with GPT-5.5 Instant.
Free users get unlimited ChatGPT text chats
OpenAI is also expanding access for people who use ChatGPT without a paid subscription. Free and Go users will get unlimited text chats powered by GPT-5.6 Luna starting August 8.
These users will also get a new Think button for questions that require more reasoning. Pressing the button gives GPT-5.6 Luna additional time to work through harder requests before producing an answer.
OpenAI says Plus and Pro users can access the updated GPT-5.6 Sol and reasoning slider starting August 7. The change applies to regular ChatGPT conversations, while the GPT-5.6 Sol versions used in ChatGPT Work and Codex remain unchanged.
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