OpenAI is upgrading ChatGPT Free with unlimited text chats powered by GPT-5.6 Luna. Users will also get the return of the Think button for deeper reasoning, while Plus and Pro subscribers receive an improved GPT-5.6 Sol with a new thinking slider.


ChatGPT gets unlimited free AI chats as OpenAI rolls out GPT-5.6 Luna with new 'Think' mode

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ChatGPT gets unlimited free AI chats as OpenAI rolls out GPT-5.6 Luna with new 'Think' mode