Anthropic raised $65 billion on Thursday and came out the other side worth $965 billion, which puts it ahead of OpenAI for the first time. OpenAI sat at $852 billion post-money after its March round, so a ranking most people treated as settled flipped over the course of one afternoon. Opus 4.8 shipped the same day, which means the model release I wrote about yesterday was sharing its press cycle with the largest private fundraise in tech history.

The investor list is the usual venture machinery, led by Altimeter, Dragoneer, Greenoaks and Sequoia, with Coatue and ICONIQ co-leading. Fifteen billion of the total was money the hyperscalers had already promised, including $5 billion from Amazon. Then there is Micron, Samsung and SK Hynix. Those three make the memory chips that train and serve Claude. They sell Anthropic the hardware, and now they own a piece of the company that buys it, which is the same circular shape the money in this industry keeps tracing, only drawn tighter than before.

Anthropic says its run-rate revenue crossed $47 billion this month, up from a $30 billion run rate in April and $9 billion a year ago. That growth is real and steep, and it explains a lot of the enthusiasm. But $965 billion set against $47 billion of annualised revenue is still a price that only works if you assume the curve never bends. In February the company was worth $380 billion. Three months later it has more than doubled that without shipping anything a sceptic would file under genuinely new; the product improved, the story widened, and the valuation outran both.

The part I find genuinely strange is that Anthropic isn't raising to go looking for demand. It's raising because it can't keep up with the demand it already has. Claude has been rationed during peak hours, with usage limits and incentives to shift work to quieter times, the posture of a company that sold more than it can currently deliver. Most of this $65 billion goes into compute so the thing people already want stops being something they have to queue for.

Both Anthropic and OpenAI are reportedly preparing to go public, possibly this year, and the speed of this round reads partly as positioning for that race. At $965 billion Anthropic would slot in somewhere around the thirteenth most valuable company in America, past Intel, past Walmart. A firm founded in 2021 by people who walked out of OpenAI is now, on paper, worth more than companies that took a century to assemble. The paper might be right. What stays with me is that nobody writing these cheques seems to actually know, and they are writing them anyway.

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