GPT‑6 with Intelligent UI rolls out globally to Plus, Pro, Business, and Enterprise users today and will expand to Free and Go users starting tomorrow.
GPT‑6 in ChatGPT is powered by GPT‑6 Sol for Plus, Pro, Business, and Enterprise tiers, and GPT‑6 Luna for Free and Go tiers. Both are tuned for everyday conversation.
This update applies to the Chat tab in ChatGPT. The models powering Work and Codex are not changing as part of this release.
https://openai.com/index/gpt-6-for-everyone/