OpenAI's annualized revenue is about $50 billion, roughly $20 billion less than the $70 billion figure widely reported in September, Axios reports. The larger number was prepared for investors to compare OpenAI with Anthropic using Anthropic's method, which counts the full price of sales through cloud partners as revenue and the partner's cut as an expense; OpenAI books only its share of some partner sales. Both approaches are GAAP compliant. It's a difference in definitions, not a drop in sales.