Improving GPT-5.6 Sol in ChatGPT - And Expanding Access to GPT-5.6 Luna for Free Users
OpenAI, Thursday, August 6th, 2026
OpenAI improves GPT-5.6 Sol in ChatGPT and gives free users unlimited everyday chats with GPT-5.6 Luna.
ChatGPT has received an improved version of GPT-5.6 Sol with better accuracy and consistency.
Alongside the model update, OpenAI expanded access for users on the free tier. Free users now get unlimited everyday chats with GPT-5.6 Luna.
The change broadens access to a current-generation model rather than restricting free users to older versions.