A new OpenAI investor disclosure is forcing the market to take a closer look at one of the most important numbers in the AI boom. According to the latest investor materials, OpenAI’s annualized revenue was approaching $50 billion at the end of September. That is still an extraordinary growth rate, but it is roughly $20 billion lower than the nearly $70 billion figure that had been circulating in the market just days earlier. The important point is that OpenAI did not suddenly lose $20 billion of revenue. The gap appears to come largely from different accounting and comparison methodologies. Some earlier estimates adjusted OpenAI’s revenue to make it more comparable with Anthropic, including revenue generated through cloud partners or distribution arrangements. OpenAI’s own reported run-rat