For the past three years, the AI boom has been measured by soaring tech valuations. That framework is becoming outdated. The next phase of the AI cycle is unfolding in a different market—the credit market. The world's most profitable technology companies are no longer financing AI primarily through equity appreciation or free cash flow. They're issuing debt. Lots of it. $Amazon.com(AMZN)$ $Alphabet(GOOGL)$ $NVIDIA(NVDA)$ $Meta Platforms, Inc.(META)$ $Oracle(ORCL)$ and $SpaceX(SPCX)$ have collectively sold $182 billion of investment-gra