Anthropic reported a net loss of more than $80 billion in the first half of the year and signalled it could spend as much as $750 billion in the coming years to secure more computing capacity, the Wall Street Journal reported on Tuesday.

The loss, up from $13 billion a year earlier, was driven by $72 billion in accounting charges tied to changes in the value of financial instruments Anthropic issued to raise money, the report said, citing a draft prospectus for its IPO.

The figures show the hefty costs of the AI race even as investors look harder at whether the money companies are pouring into chips and data centres will pay off.

Anthropic's revenue jumped to $16.3 billion in the six months ended June 30 from $1.1 billion a year ago, while AI infrastructure spending nearly quadrupled to almost $9 billion, the Journal said.

Anthropic did not respond to a request for comment, and Reuters could not immediately verify the report.

Reuters reported first in September that Anthropic posted a net loss of $42 billion ‌in 2025, as part of a series of exclusives from its IPO prospectus.

The company has benefited from the popularity of Claude Code, its coding assistant that developers use to write software and build apps.

But some current investors and prospective investors who attended Anthropic's investor day last week are weighing a lower valuation ‌for the AI company after its latest financial disclosures, four people familiar with the matter had told Reuters.

5 trillion, three of the people had said, a significant step down from the roughly $2 trillion valuation previously expected for the November share sale.

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