Anthropic IPO: Net revenue retention at 900% as H1 loss swells to $80.7 billion

Anthropic, the artificial intelligence company behind Claude, reported net revenue retention of approximately 900% as of September 30, 2026, even as its net loss widened more than sixfold to $80.75 billion in the first half of the year, according to its registration statement filed with the US Securities and Exchange Commission (SEC) on Monday.

The company’s revenue surged to $16.29 billion in the six months ended June 30, 2026, from $1.16 billion in the year-earlier period. However, the headline net loss was largely driven by a sharp adverse change in the fair value of its financing instruments, rather than its operating performance alone.

Anthropic has applied to list its Class A common stock on the Nasdaq Global Select Market under the ticker symbol “ANT”. The preliminary prospectus does not yet disclose the proposed share price range or the number of shares to be offered.

What 900% net revenue retention means

Anthropic’s net revenue retention (NRR) of approximately 900% marks the revenue generated by a defined cohort of existing customers in the three months ended September 30, 2026, relative to the same cohort’s revenue in the corresponding three-month period a year earlier.

The calculation excludes subscribers to its Claude Pro and Max plans, whose fixed-price subscriptions do not reflect the expansion and contraction in spending that the metric is intended to capture.

The company reported more than 11,900 customers generating at least $100,000 in trailing 12-month revenue as of September 30, 2026. More than 1,900 customers generated at least $1 million, while approximately 250 generated at least $10 million.

Fair-value changes drive headline loss

Anthropic’s net loss widened to $80.75 billion in the six months ended June 30, 2026, from $12.97 billion in the corresponding period a year earlier. The company recorded an adverse $72.39 billion change in the fair value of its convertible notes, derivative liabilities and simple agreements for future equity (SAFEs) during the first half of 2026.

The filing says these fair-value changes were primarily driven by an increase in the value of outstanding convertible promissory notes as Anthropic’s enterprise valuation rose.

Its operating loss, however, narrowed to $693 million in the first half of 2026 from $2.14 billion a year earlier. Total operating expenses increased to $16.98 billion from $3.30 billion, with compute and infrastructure expenses rising to $8.95 billion from $2.33 billion.

Compute and infrastructure expenses climbed to $8.95 billion from $2.33 billion, while personnel expenses increased to $3.15 billion from $538 million. Sales, marketing and partnership expenses rose to $3.17 billion from $120 million.

Despite the rapid growth in revenue, Anthropic has cautioned investors that “we may not achieve or sustain profitability in the future.” The warning stresses the uncertainty around its ability to translate its fast-growing business into sustained profitability as it continues to invest heavily in AI development and infrastructure.

Compute spending remains a major requirement

Anthropic reported that it had raised an aggregate $141.1 billion in capital as of June 30, 2026. Its cash and cash equivalents stood at $112.4 billion, alongside $19.3 billion in short-term investments.

The company relies on a multi-chip computing architecture spanning Amazon Web Services’ Trainium, Google’s tensor processing units, and graphics processing units from Nvidia and AMD. It also distributes Claude through Amazon Web Services, Google Cloud Platform and Microsoft Azure.

Anthropic’s proposed governance structure gives a founder-organised limited liability company, through a special Class F share, 50.1% of total voting power on general shareholder matters. Separately, its Long-Term Benefit Trust has the authority to elect and remove Class T directors, who will constitute a majority of authorised board members.