ChatGPT Hits 1 Billion Weekly Users, Gets Unlimited Text Chats
Unlimited Chats for All Users, New Features for Plus and Pro
OpenAI has announced that it's removing limits on text-based chats for all users on ChatGPT, which recently crossed the 1 billion weekly user mark. The company is introducing new features for Plus and Pro users, including an upgraded GPT-5.6 Sol model and a thinking slider to adjust the model's reasoning power.
New GPT-5.6 Luna Model
The new GPT-5.6 Luna model will power the unlimited text chats experience for Free and Go users, replacing GPT-5.5. This model is designed to provide more accurate and robust answers, with internal evaluations showing a 62% reduction in factual errors compared to GPT-5.5-Instant.
Upgraded GPT-5.6 Sol Model
Plus and Pro users will get access to an upgraded GPT-5.6 Sol model that's better suited for quick tasks such as questions, web research, advice, planning, writing, and making decisions. This model is designed to provide more compact and robust answers.
Thinking Slider
ChatGPT Plus and Pro users will get a thinking slider to adjust "how much" thought the model puts into an answer. They can tune the thinking slider based on complexity and steps involved in solving a query.
Availability of Features
The updated version of GPT-5.6 Sol is available to Plus and Pro users today, while the other changes for Free and Go users are arriving this week. Next week, users will gain access to unlimited text chats and the new Think button for harder questions.
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