Anthropic Is Likely Generating at Least 35% More Revenue Than OpenAI

<p>On New Year’s Day, OpenAI leaders would have been happy to hear that the company’s monthly revenue would rise more than 50% over the first five months of 2026, roughly in line with the projections it previously shared with investors. But they’re not likely to feel that way now: That pace looks downright tame compared to that of Anthropic, whose revenue grew five times in the same period, leapfrogging OpenAI’s.</p><p>Anthropic was recently generating revenue at an annualized rate of close to $45 billion. OpenAI’s current run rate couldn’t be learned but it recently crossed $30 billion, and one person familiar with the numbers said it isn’t much higher now. If we estimate their annualized rate now is around $33 billion, that would mean Anthropic’s revenue is about 35% higher. And things aren’t likely to change anytime soon if OpenAI’s growth rate doesn’t accelerate materially.</p>