Silicon Valley’s AI millionaires are paying eye-popping rates of up to $6,000 an hour — and $23,000 a day — for escorts who can discuss GPUs, artificial intelligence and the future of humanity before heading to the bedroom. A small but lucrative class of so-called “nerd-first” escorts is cashing in on the tech industry’s wealth explosion by marketing themselves as intellectually curious companions who can match clients’ obsession with AI, cryptocurrency, longevity and other futurist pursuits. There are only a handful of escorts operating in the niche, according to Forbes, but some are commanding rates that dwarf those of traditional...