Somebody else is paying for your AI subscription. Not most of it. Almost all of it. That's the open secret of this whole era, and it's not on the pricing page. The arithmetic is inconvenient enough that nobody selling you a plan is in a hurry to walk you through it. SemiAnalysis did the obvious experiment : buy every plan OpenAI and Anthropic sell, then spend a month actually hammering them - long agentic runs, code generation that doesn't stop. A fully maxed-out ChatGPT Pro subscription ...