Not quite. In 2 years their revenue has ~20x from 200M ARR to 3.7B ARR. The inference costs I believe pay for themselves (in fact are quite profitable). So what they're putting on their investor's credit cards are the costs of employees & model training. Given it's projected to be a multi-trillion dollar industry and they're seen as a market leader, investors are more than happy to throw in interest free cash flow now in exchange for variable future interest in the form of stocks.

That's not quite the same thing at all as your credit card's revenue stream as you have a ~18%+ monthly interest rate on that revenue stream. If you recall AMZN (& all startups really) have this mode early in their business where they're over-spending on R&D to grow more quickly than their free cash flow otherwise allows to stay ahead of competition and dominate the market. Indeed if investors agree and your business is actually strong, this is a strong play because you're leveraging some future value into today's growth.