Federal Reserve Vice Chair Philip N. Jefferson has identified four key metrics to determine if the current AI boom resembles the dot-com bubble of the 1990s. Speaking at the 2025 Cleveland Fed conference, Jefferson emphasized the importance of monitoring network metrics such as employment, inflation, and financial stability. He noted that, unlike the dot-com era, today's AI companies generally exhibit stronger profits, lower debt levels, and more moderate valuations. Despite these positive indicators, Jefferson cautioned about potential risks, particularly in private markets. He advised traders to remain vigilant, especially regarding altcoins, as AI developments continue to evolve.