ChatGPT brings unlimited text chats to free users
OpenAI has removed text-based chat limits for free users on ChatGPT and introduced new models, GPT-5.6 Luna and Sol. The update also includes a 'Think' button for complex queries and a thinking slider for paid subscribers to adjust reasoning depth.
Why it matters
Expanding access to advanced reasoning models for free users significantly lowers the barrier to entry for high-level AI tools.
OpenAI is removing limits on text-based chats for all users on ChatGPT, which recently crossed the 1 billion weekly user mark , the company announced today.
The new GPT-5.6 Luna model will power this experience and will be the default model for Free and Go users, replacing GPT-5.5.
Both users will also get a new “Think” button that lets them select higher reasoning power for complex questions. OpenAI said that there will still be separate limits for files, images, voice, and image generation.
The update brings changes for Plus and Pro users as well. They’ll gain access to an upgraded GPT-5.6 Sol model that’s better for quick tasks such as questions, web research, advice, planning, writing, and making decisions. The company noted that this new model will give more compact and robust answers. (Notably, this is a separate version from GPT-5.6 Sol used for Codex and Work, which is unchanged.)
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