GPT 5.6 Luna becomes default for ChatGPT Free and Go

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Alex Getman @alexgetmancom · 6 Aug 2026, 18:04 UTC · Updated 31 Oct 2026, 20:59 UTC

Tools & updates

⚡️ GPT 5.6 Luna is becoming the default model for ChatGPT Free and Go users

Starting next week, it will also come with unlimited text chats and a new Think button for harder questions.

Screenshot of ChatGPT interface showing the new Think button and a pop-up offering smarter answers with options to turn it on or upgrade to Plus.

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