They shrunk a strong 27B model to 5.9 GB. 9× smaller keeping ~98% of original performance. “Ternary” compression stores model weights using only three values. That means powerful AI can run on much cheaper, smaller hardware.
GPT-5.4 full at xhigh scored 51, exactly where Luna max sits today. GPT-5.4 costs $2.50/$15; Luna now costs $0.20/$1.20. In other words, roughly four months later, OpenAI is selling March’s full flagship intelligence at about one-thirteenth the token price.