OpenAI announced that the free version of ChatGPT will be upgraded to GPT-6

OpenAI announced that GPT-6, equipped with "Smart UI," will be launched for Plus, Pro, Business, and Enterprise users worldwide, and will be available to free and Go users starting from October 8.

In ChatGPT, GPT-6: The Plus, Pro, Business, and Enterprise versions are powered by GPT-6 Sol; the free and Go versions are powered by GPT-6 Luna. This update applies to the "Chat" tab of ChatGPT.