The number came down in a room, not in a filing
Prospective buyers at Anthropic’s investor day in San Francisco on Wednesday discussed valuing the company at about $1.5 trillion, Reuters reported, citing three people familiar with the matter. The figure previously floated for the November share sale was roughly $2 trillion.
Nothing has been priced. A valuation discussed by attendees at an investor meeting is not a term sheet, and the eventual number will be set in a book-building process that has not started. But the direction of the talk is the news, and it moved in the week Anthropic opened its third-quarter figures to the people who would buy the stock.
Chief executive Dario Amodei and finance chief Krishna Rao attended the meeting.
What the quarter actually said
The disclosed numbers are not bad ones. Anthropic told the meeting that third-quarter revenue rose 45% from the previous quarter to $16.8 billion, and that the company was profitable on an adjusted basis in the quarter. For most companies at any scale, 45% sequential growth and adjusted profitability would be the headline.
The problem is the quarter before. Second-quarter revenue was $11.6 billion, more than double the first quarter’s, and full-year 2025 revenue grew twelvefold to nearly $4.6 billion. Against that, 45% reads as a deceleration, and Investing.com’s account of the Reuters report says some investors were disappointed by exactly that.
This is the arithmetic that catches every company priced on a growth curve. The absolute numbers get larger and the multiple that investors will pay for them gets smaller, because the multiple was never about the revenue — it was about the rate.
The losses are the other half. Anthropic lost more than $8 billion on an operating basis in 2025, excluding writedowns of various liabilities mostly tied to earlier fundraising. And it has committed to spend at least $518 billion over a decade on cloud services, computing and infrastructure, a commitment that has to be serviced out of whatever the revenue curve does next.
The market is not helping
The timing is poor. A broad technology selloff has been running through AI infrastructure names, and Reuters notes CoreWeave’s shares and bonds both fell on Thursday. A company planning to list in November is reading the same tape as everyone else, and so are the investors deciding what they will pay.
Google and Amazon sit on more than one side of this. Both are investors in Anthropic, both supply its compute, and both distribute its models — a structure that supports the revenue line and makes the independence of the growth story harder to assess from outside.
Why $1.5tn is still an extraordinary number
It is worth holding both facts at once. A quarter has been taken off the talk, and what remains is a prospective $1.5 trillion valuation for a company that was making $4.6 billion a year as recently as 2025. The debate is not about whether Anthropic is valuable. It is about which growth rate the next decade gets priced on, and the third quarter supplied the first datapoint that the curve can bend.
What to watch
The filing range is the number that matters, and it is the first one that is not a conversation. Watch for the price range when the roadshow formally opens, for whether the November timing holds through the selloff, and for what Anthropic discloses about the $518 billion commitment’s schedule. A listing that prices well below the talk is a different event from one that prices at it.
