Artificial intelligence is turning out to be far more expensive than anyone expected, and CFOs at major U.S. companies are now facing a brutal new trade-off: tokens or humans. That was the picture two enterprise AI CEOs at the center of the buildout described to CNBC this week. Their accounts of what's happening inside the Fortune 500 paint a sharp picture of the threat that rising costs pose to the AI trade. It's a risk the market hasn't yet recognized as it hits record highs and mints new