Anthropic’s $16.8bn quarter makes its IPO easier to sell—and harder to value

Anthropic told prospective IPO investors that third-quarter revenue reached $16.8bn, up from roughly $11.6bn in the second quarter and $4.7bn in the first. The company said it was profitable on an adjusted basis for a second consecutive quarter and reported an adjusted operating margin of about 11%.

That is a real change in the financing story. A frontier-model company that can show operating leverage has a stronger case for funding training and infrastructure through public equity rather than repeated private rounds. The growth rate nevertheless slowed from more than doubling in the previous quarter to about 45%, below some investors’ expectations. A business can be expanding at an exceptional pace while still disappointing a valuation built around even faster growth.

The accounting perimeter needs care. The margin excludes stock-based compensation, and earlier reporting said Anthropic’s gross-margin presentation did not fully capture model-training costs or revenue shared with distribution partners. The numbers were delivered in a private investor meeting rather than an audited public filing, and Anthropic declined to comment. They should be read as management claims until the S-1 provides reconciliations, cash-flow detail and customer concentration.

The Information reports that distillation-related business now accounts for only about 5%–7% of revenue. That reduces one concern about customers using Claude to train competing systems, but leaves the more important commercial question: how much usage remains when enterprises improve their own models, route work among providers or push prices down?

The IPO will test whether public investors treat Anthropic as a software company with rapidly widening margins or as a capital-intensive utility whose current profitability depends on selective adjustments. The $16.8bn quarter strengthens the first interpretation; slowing growth, enormous future compute commitments and undisclosed economics keep the second alive.