Just last month, the most important metric in Silicon Valley was tokens burned—the units of measurement for the computing power being used by AI models. CEOs were giving employees the Matthew McConaughey “ those are rookie numbers, you gotta pump those numbers up ” speech from  The Wolf of Wall Street . Now, they’re asking their staff to pump the brakes. According to a report from the Wall Street Journal , corporate leaders have realized that it actually costs money to burn AI tokens, and doing almost exclusively for the sake of doing it with no other goal in mind is actually not a great business strategy. Good thing these guys get paid tens of millions of dollars a year to figure these things out.…