Cutting GPT-5.6 Luna Costs Further: $0.02 Cache Reads on an Already-Cheap Model
Caching on GPT-5.6 Luna API is a modest optimization on top of a model that is already cheap — and that is exactly why it is worth doing. Luna’s cache reads cost about $0.02 per million tokens, against a fresh-input price of $0.20. This Luna/Terra/Sol cost guide covers the same lever across the family. When…