Either Google or the US DoD. The former has the raw information, researchers, and computation skills; the later has the raw funding and motive. A state actor w

Either Google or the US DoD. The former has the raw information, researchers, and computation skills; the later has the raw funding and motive. A state actor with AGI will own electronic warfare. AGI would also be able to bring swift advancements to the first state that created it, so inventing it would quickly follow with leaps in conventional weapons. Assuming the AGI wants to collaborate.