IFP @arthurctellis predicts the economics of AI cyber defense: frontier models will build the capabilities, but cheaper open-weight models will become the "agentic brain" "Frontier models obviously are closed models. If the US develops and services them, they're immediately available to US agencies and US tech companies without relevant guardrails. Because they're serviced in the United States and we have such a compute advantage, it still enables the United States to have that principle…