Ninety days. That’s how long it took Anthropic revenue to reach $16.8 billion in the third quarter, and the company told prospective investors it turned a profit on an adjusted basis, according to the Financial Times. A company that was a research lab not long ago now books more revenue per quarter than plenty of household-name corporations do in a year.
The numbers came out of a closed pre-IPO meeting on Wednesday at Anthropic’s San Francisco headquarters, Bloomberg reported. An investor who attended gave Reuters the same figure. Anthropic has not put out a press release or a filing. So treat this as a strong, well-sourced report, not an audited result. We also covered the investor meeting itself ahead of Wednesday.
How fast Anthropic revenue is growing
Here is the climb. Reuters says Q1 came in at $4.7 billion and Q2 at $11.6 billion. The Financial Times and others put Q2 at $11.5 billion. Either way, Q3 grew roughly 45% from the quarter before.
Add it up and the first three quarters of 2026 total about $33 billion. For comparison, all of 2025 was nearly $4.6 billion, per Reuters.
That is a twelvefold jump, and this year’s Anthropic quarterly revenue is already running far past it. (Last year’s total is starting to look like a warm-up lap.)
Profitable, with a big asterisk on Anthropic Q3 earnings
Anthropic told investors it was profitable in the quarter on an adjusted basis, according to Bloomberg. Some secondary reports cite an 85% adjusted gross margin and an operating margin above 11%. Insiders are the source of those margin figures, and neither Reuters nor the FT has confirmed them, so hold them loosely.
Notice the word “adjusted.” Adjusted for what? Nobody has said how Anthropic defines it.
Nobody has said whether the $16.8 billion is gross or net revenue, either, as SiliconANGLE noted. Anthropic has not claimed profit on a GAAP basis. That is the number a public S-1 will have to show.
Here’s the thing: the bill behind Anthropic sales is enormous
Why should you care? Because this company is about to ask public markets to value it somewhere between $1.8 trillion and $2 trillion, according to Yahoo Finance. In May, its Series H valued it at $965 billion. So the IPO target roughly doubles that in five months.
Then there is the other side of the ledger. Anthropic has committed at least $518 billion over a decade for cloud, computing and infrastructure, per Reuters. Its operating loss for 2025 topped $8 billion before writedowns.
Fast growth is wonderful. Paying for the chips behind it is the part that keeps analysts up at night. Other tech giants feel the same pull, as Microsoft’s push to need Nvidia less shows.
PitchBook, for one, is skeptical of a $2 trillion entry price. It sees $1.4 to $1.6 trillion as better supported. Its IPO analysis also notes that Anthropic cannot cancel roughly 80% of those compute commitments.
The OpenAI comparison
The timing is awkward for its biggest rival. Last week the FT reported that OpenAI’s run-rate estimate dropped from about $68 to $70 billion to $50 billion after investors miscalculated. Bloomberg says OpenAI is holding off its IPO until early 2027 and wants to raise $30 billion at a $1.4 trillion valuation. Sam Altman has also said OpenAI will not go public in 2026.
So the AI race now has a scoreboard, and Anthropic just posted a big number on it.
Some commentators argue growth slowed from earlier in the year, but those claims are unsourced opinion. For what it’s worth, PitchBook’s math via Morningstar showed a flat July run rate would imply about $16.3 billion for the quarter, so $16.8 billion is a bit better than flat. Anthropic revenue, in other words, still looks like it is accelerating.
What comes next for the IPO
A roadshow could start as early as the week of Nov. 9, with a debut targeted before Thanksgiving or by year-end, per Yahoo Finance. Reuters has also reported the listing could slip until after the November midterms. The company has not locked anything in.
The real test lands when the S-1 goes public. Then we learn what “adjusted” means, what the GAAP numbers look like, and whether $16.8 billion is the whole story. Until then, one question hangs over the biggest AI listing ever: is this the start of the profits, or just the most expensive growth chart in history?
