GoKawiilChatGPT has become so much more than just chat over the last year. To that end, OpenAI is removing limits on text chat. ChatGPT will also improve with a smarter version of GPT-5.6 Sol. Details below.
GPT-5.6 Sol gets smarter in ChatGPT
OpenAI introduced GPT-5.6 Sol in June as the flagship member of a three-model family. Sol, Terra, and Luna became widely available in ChatGPT and Codex the following month.
Now OpenAI is releasing a version of GPT-5.6 Sol tuned specifically for everyday conversations in ChatGPT. The company says the update should produce more focused answers, adapt the level of detail to each question, and avoid unnecessary formatting.
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. For a quick question, that means a direct answer with the context you need. For more involved work like multi-step planning, research or writing, it means a fuller response that keeps the main recommendation clear.
The update also unifies ChatGPT’s Instant and Thinking experiences for Plus and Pro subscribers. Both will use GPT-5.6 Sol, with a new slider controlling how much thought the model puts into its response.
The slider will be available across the ChatGPT apps for web, mobile, and desktop. Users can keep it low for quick questions or increase the reasoning level for research, planning, writing, coding, and more complicated decisions.
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. Keep it quick for everyday questions, or move the slider up for planning, research, writing, coding, or decisions that need more thought.
OpenAI also claims the revised model is more reliable when answering questions involving dates, numbers, rules, sources, and assumptions.
In an internal evaluation covering financial, medical, and legal prompts, answers containing at least one factual error were reportedly 68% less common with GPT-5.6 Sol than with GPT-5.5 Instant.
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