Anthropic posted an $80 billion H1 loss, $72 billion on paper

Every buyer who runs a product on Anthropic's models has been working with a supplier whose balance sheet was private. One of those pages is now public in draft form. The Wall Street Journal, citing a draft Anthropic IPO filing, reported that the company posted an $80 billion net loss in the first half of 2026. Al Jazeera, which published its own open summary of the WSJ story on 21 October 2026, says $72 billion of that figure came from accounting charges on convertible notes and similar instruments whose value moved as Anthropic's own valuation rose.

The same filing, Al Jazeera writes, shows that Anthropic took $16.3 billion in revenue over the six months, against $1.1 billion in the first half of 2025. The same report says the company spent close to $9 billion on compute and infrastructure in those six months, which is more than the $7.3 billion it spent across the whole of 2025. Anthropic did not respond to the WSJ's request for comment, and the WSJ said the figures could not be independently verified at the time of its report.

Where the $72 billion comes from

Convertible notes are loans that can turn into shares later, and the accounting rules in the United States ask the issuer to mark their value up each quarter if the shares those notes point at have become more valuable. Anthropic's valuation has risen sharply this year, so the notes it issued when the valuation was lower are now worth more to the holder, and that increase appears on the income statement as a loss. The company has not paid anybody $72 billion in cash. The cash cost of running Anthropic in those six months, after this one line is set aside, looks closer to $9 billion in infrastructure plus the rest of its operating costs.

What the figures tell a buyer

Two facts in the Al Jazeera summary are useful to anyone who already buys from Anthropic or is thinking about it. Revenue grew about fifteen times year on year, which says the installed base of paying usage is real and still expanding at a rate most software companies never see. Infrastructure spending grew faster: $9 billion in six months is already $1.7 billion above Anthropic's entire 2025 compute bill, which means the cost of serving each new unit of revenue is rising with it, and the way that spend is funded is part of why the convertible notes exist in the first place.

A supplier whose capacity has to scale with every customer, and whose compute bill is on track to more than double inside twelve months, is a supplier with structural pressure on its list prices. The direction of that pressure is set by the gap between the $16.3 billion of revenue and the compute bill behind it. The $80 billion headline is a separate line about paper gains on convertible notes, and the two are easy to confuse when reading only the big figure.

The underlying document is the WSJ's reporting of a draft S-1, and that S-1 is not public. Every number here comes from the WSJ by way of Al Jazeera's open summary.

Source

Al Jazeera, summarising the Wall Street Journal's report on a draft Anthropic IPO prospectus.