GPT-5.6 Luna Just Got 80% Cheaper. Here’s What That Actually Changes.
On July 30, OpenAI cut the price of GPT-5.6 Luna by 80% and GPT-5.6 Terra by 20%. A week later, on August 6, Luna became the default model for every ChatGPT Free and Go user, with unlimited text chats. Those two announcements landed a week apart and got covered as separate stories. They’re the same…