When DeepSeek, based in China, said that it spent only $6 million to develop its chatbot, U.S. stocks in the artificial intelligence segment lost $1 trillion in market value. Nvidia (NVDA) led the decline and created a record loss by market capitalization.DeepSeek’s low expense suggests that Microsoft (MSFT), Alphabet (GOOG), and Meta Platforms (META) overspent on servers that power their AI. Conversely, Apple (AAPL) has no in-house AI platform.DeepSeek’s low-cost claim is questionable. It will take months for experts to validate the firm’s effort. Still, when the dust settled, U.S. media…