OpenAI details GPT-6 rollout schedule and tier models across ChatGPT

OpenAI has rolled out GPT-6 with Intelligent UI globally to Plus, Pro, Business, and Enterprise tiers today, with rollout expanding to Free and Go users starting tomorrow, as detailed in its [GPT-6 rollout announcement](https://openai.com/index/gpt-6-for-everyone/).

Within ChatGPT, Plus, Pro, Business, and Enterprise tiers are powered by GPT-6 Sol, while Free and Go tiers run on GPT-6 Luna. Both models are tuned for everyday conversation. The change applies specifically to the Chat tab in ChatGPT, and the models powering Work and Codex remain unchanged.