Anthropic reported an $80.748 billion net loss for the six months ended June 30, 2026, but $72.388 billion of it was a change in the fair value of convertible notes, derivative liabilities, and SAFEs. That’s about 90% of the loss. So the headline number isn’t a direct measure of what Anthropic spent on running its business.
What the charge is. The filing says it was primarily driven by an increase in the fair value of its convertible promissory notes. Those notes can be converted into shares later, so as Anthropic’s valuation rose, they became worth more, and accounting rules require recording that increase as an expense. No cash left the company for it. In the S-1’s own wording, the changes were driven by an increase in enterprise valuation.
It isn’t a one-time item. The filing shows fair-value charges of $1.0 billion in 2023, $5.4 billion in 2024, and $34.3 billion in 2025, plus $10.9 billion in the first half of 2025. The charge recurs while the instruments are outstanding and the company’s valuation keeps rising, which is why it can swing a net loss so far from the operating results.
What the operating numbers show.
Revenue was $16.286 billion, up from $1.163 billion in the first half of 2025.
Total operating expenses were $16.979 billion, leaving an operating loss of $693 million, down from $2.135 billion a year earlier.
Anthropic reported $974 million in operating income for the second quarter.
It generated positive operating cash flow for the first time, $3.9 billion, against negative $1.5 billion a year earlier.
It held $131.7 billion in cash and short-term investments on June 30.
A note on “adjusted” profit. Anthropic also reports an adjusted operating income of $1.6 billion, which excludes stock-based compensation, non-cash charitable contributions, and legal settlement expenses. That’s a non-GAAP measure, so the standard accounting figure remains the $693 million operating loss.
What’s still open. None of this settles whether Anthropic’s growth can carry the cost of its compute buildout. About 20% of first-half revenue came from two customers, and one outlet’s reading of the filing puts cloud commitments at about $269 billion. Reuters reports investors are weighing the company’s rapid growth against its funding needs. The S-1 is also a draft: it isn’t yet effective, and figures could change in later amendments.
Bottom line: The $80.7 billion loss is real on paper but mostly a valuation-driven accounting charge. Underneath it, Anthropic reports a much smaller operating loss, a profitable second quarter, and positive operating cash flow, alongside heavy customer concentration and large compute commitments. Whether that holds as it grows is the question the filing leaves open.
