Anthropic Files for an IPO Ten Days After OpenAI, and Pulls Ahead
The rivalry between the two leaders of generative AI now has a finish line in view. Anthropic filed confidentially for an IPO on Monday, just ten days after OpenAI did the same, turning a contest over models and talent into a sprint to the public market. The surprise is who is in front. Anthropic’s latest private round, which raised $65 billion, valued the Claude maker at $965 billion, comfortably above the $852 billion OpenAI carried into its own filing. The company long cast as the cautious, safety-first underdog is, by that measure, now the more valuable of the two.
The gap underneath the valuations should worry OpenAI more than the valuations themselves. Anthropic has told investors its revenue run rate has reached roughly $47 billion, up from about $10 billion a year ago, and that it is closing in on profitability, a claim no other frontier lab can credibly make. After two years in which the market funded AI almost entirely on faith, a lab that can point to real revenue and a path to making money is a fundamentally different proposition from one still measured purely in promise.
The catch is the one shadowing the whole industry: that revenue is bought with enormous compute, and Anthropic is among the largest buyers of AI computing power on earth. Its profitability case rests on revenue outrunning a cost base that is still exploding. When the full S-1 eventually goes public, it will be the first hard look at whether that arithmetic holds, and not just for Anthropic. It will be the closest read yet on whether the economics of the entire AI build-out actually work.
For the banks, this is the richest fee event in years arriving twice in two weeks. Goldman Sachs, JPMorgan and Morgan Stanley are all circling the lead roles on two near-trillion-dollar listings filed barely ten days apart. Whichever lab opens its books to public investors first will set the template, and the valuation anchor, for every AI offering that follows it to market.



