OpenAI says GPT-6 in ChatGPT's Chat tab is powered by GPT-6 Sol for Plus, Pro, Business, and Enterprise tiers and GPT-6 Luna for Free and Go tiers (@openai)

OpenAI has announced that GPT-6 is now integrated into ChatGPT's Chat tab. This new version is powered by two distinct models: GPT-6 Sol and GPT-6 Luna. GPT-6 Sol is available for Plus, Pro, Business, and Enterprise tiers, while GPT-6 Luna is designated for Free and Go tiers. The rollout of GPT-6 with Intelligent UI began globally for paid users today and will extend to Free and Go users starting tomorrow.

This report is the first to detail the specific GPT-6 models, Sol and Luna, powering different ChatGPT tiers, unlike general announcements.