ANTHROPIC JUST LAPPED OPENAI ON REVENUE AND IT DID IT SPENDING FOUR TIMES LESS The company that was almost an OpenAI footnote is now beating it on the only scoreboard that matters in Silicon Valley. Anthropic confirmed this week that its annualized revenue run rate has crossed $30 billion, surpassing OpenAI’s $25 billion mark and doing it while spending roughly four times less on model training. When Anthropic closed its Series G in February, it had 500 enterprise customers each spending over $1 million annually. That number has since doubled to more than 1,000 in less than two months. The turnaround is almost absurd: Anthropic ended 2025 at roughly $9 billion in run-rate revenue. That means it more than tripled in under six months. The engine behind it is Claude, which has become the model of choice for a growing number of large organizations that want reliability over spectacle. OpenAI still commands more consumer attention, and its own revenue trajectory is strong, but Anthropic is proving that you do not need to burn the most money to win the enterprise market. In an industry defined by spending arms races, that is not a small thing to prove. The question now is how long OpenAI can hold onto the narrative that bigger spending equals better results. Keywords: Anthropic revenue, OpenAI revenue comparison, Claude enterprise AI, AI company valuation 2026