Anthropic reports $16.8 billion quarter, with rivals funding part of the growth

Anthropic told investors that third-quarter revenue reached $16.8 billion, according to the Financial Times. It reported $11.5 billion in the second quarter and about $4.8 billion in the first. Simon Willison notes that the figures come from an investor presentation and people familiar with the meeting.

Revenue rose by nearly half and an operating margin appeared

Reported revenue increased by roughly 46% between the second and third quarters. Anthropic also told investors that it generated $1.70 in revenue for every $1 spent on computing power during the third quarter.

Adjusted operating margin reached 11%. That measure excludes stock-based compensation, so it should not be confused with GAAP net income. Ahead of a planned IPO, however, Anthropic is presenting investors with rapid growth accompanied by an early sign of operating discipline.

Five to seven percent of revenue came from training rivals

The strangest part of the numbers does not concern ordinary customers. Anthropic said distillation accounted for 5% to 7% of revenue, as rival labs used its models heavily to train their own systems. The company said it materially curtailed that activity in the third quarter.

This creates an unusual conflict. In revenue terms, these were paying customers with heavy usage. In strategic terms, they were competitors buying access to product behavior. Restricting them may reduce near-term revenue while protecting the longer-term value of Anthropic's models.

An investor briefing is no substitute for audited accounts

The figures are striking, but the source chain runs through a private investor meeting, anonymous people cited by the Financial Times and subsequent commentary. Without full statements, investors cannot see the cost structure, receivables quality or the gap between adjusted operating results and accounting profit.

It is also unclear how much of the growth comes from repeatable demand and how much from exceptional levels of consumption. The distillation share shows that at least some revenue came from activity Anthropic itself considered strategically undesirable.

The IPO will test revenue quality rather than speed alone

The prospectus should reveal gross margin after the full cost of compute, customer concentration and revenue trends after the distillation crackdown. Those figures will show whether the $16.8 billion quarter rests on broad, durable Claude usage or a handful of unusually thirsty buyers.

Another signal will be whether Anthropic can sustain growth and improve margins without returning to annualized revenue run rate as its headline argument. Public markets enjoy speed, but repeatability sets the price.

Lilith's verdict

The investor dashboard glows with $16.8 billion, but one cable runs straight to rival labs. Before the IPO, Anthropic must show how much light remains after it is unplugged.