The private market has had its say. Anthropic went from an $18 billion valuation in early 2024 to $965 billion this May, doubling roughly every three months for fourteen months. Now the company is headed for the public market, with reports pointing to a roadshow the week of November 9 and a listing before Thanksgiving. The number being discussed is $2 trillion, with up to $100 billion raised. If it happens, it would be the largest IPO in history, eclipsing the record SpaceX set in June.
This is the moment private optimism meets public pricing. Here is what the public is being asked to buy.
Start with the growth, because it is real. Anthropic's recognized revenue jumped twelvefold in 2025 to $4.6 billion, per its leaked S-1 filing. The first quarter of 2026 alone did $4.73 billion. The annualized run rate crossed $65 billion by July, and the company reports positive adjusted operating income in the second quarter. Some reports now put the pace above $100 billion, though those are unverified whispers rather than audited numbers. Roughly 80 percent of revenue comes from enterprise customers: more than 300,000 businesses, over 1,000 spending more than a million dollars a year, eight of the Fortune 10. This is not consumer hype. It is committed enterprise spend, per token, on a product that demonstrably works.
Now the other ledger. Anthropic posted an operating loss of about $8 billion in 2025. The headline net loss was around $42 billion, though roughly $34 billion of that was non-cash accounting charges tied to financing instruments rather than operating cash burn. And then there is the stack of commitments: at least $518 billion of infrastructure obligations over roughly the next decade, per Reuters, with about 80 percent noncancelable or payable whether Anthropic uses the capacity or not. Hyperscaler commitments with Alphabet, Amazon, and Microsoft total about $252.5 billion, with minimum spend floors. Broadcom-linked equipment leases account for another $161 billion.
Read that again. A $100 billion IPO, the largest in history, covers roughly one fifth of the mostly-fixed commitments already signed. The raise is not the funding event. It is one tap among several the company will have to keep turning.
This is heavy-industry economics wearing software multiples. At a $2 trillion valuation against a $65 billion run rate, the multiple is about 31 times revenue. Against 2025 recognized revenue, it is over 400 times. On a business that lost $8 billion on operations last year and owes half a trillion dollars in mostly-fixed payments. The bull case is that inference costs keep falling while usage compounds faster, so revenue per dollar of compute improves over time. The bear case is simpler: cheap AI makes customers consume vastly more tokens, so the infrastructure bill keeps growing with the revenue.
There is a recent precedent for what happens when record private optimism meets the public tape. SpaceX went public in June at $1.77 trillion, the largest IPO ever. Day one was euphoric: shares opened at $150 against a $135 offer, closed up 19 percent, and rallied past $225 in the days after, briefly touching a $2.1 trillion market cap. Then gravity arrived. Within weeks the stock traded below its IPO price. Day-one buyers who held are underwater. The skeptics had done the math in advance: Morningstar pegged fair value at $780 billion, less than half the IPO price. SpaceX had $18.7 billion in 2025 revenue and a GAAP net loss. The IPO priced it at 95 times revenue, 112 times at the debut-day peak. Euphoria is not a valuation method.
Anthropic's offering arrives into a harsher macro backdrop than SpaceX's did. The 10-year Treasury sits near 5.35 percent, a 24-year high, and the September FOMC minutes show most officials still see another hike this year. A 5.35 percent risk-free rate reprices everything that is not a proven cash machine. OpenAI has delayed its own IPO to 2027. Other planned listings have been pulled for poor sentiment. The tape is printing records into this IPO, but the bond market is quietly arguing with it.
Then there are the structural quirks worth knowing. Anthropic's Long-Term Benefit Trust holds special shares with governance powers, and founders are reportedly getting super-voting stock, so public shareholders will get economics, not control. The hyperscalers writing the biggest checks are also the suppliers owed the biggest commitments, which makes for complicated incentives. And the CEO who called for the industry to slow down over safety concerns is the same CEO asking the public for $100 billion. That tension will not resolve on listing day.
None of this is an argument that Anthropic is a bad company. It is arguably the best-positioned AI lab on earth, with real revenue compounding at a pace no company in American history has matched. The question is only the price. Private marks are set by mutual agreement among people who all benefit from the mark going up. Public marks are set by everyone, every second, including people with no reason to be kind. SpaceX taught that lesson three months ago. Anthropic is about to get its own exam, at $2 trillion, into the teeth of 5.35 percent yields.
The tape is printing records. The bonds are asking questions. November will settle which one was right.
Originally published on AI & Markets:
https://aiandmarkets.substack.com/p/private-marks-meet-the-public-tape
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