Anthropic's amended IPO filing, submitted to the SEC on Monday, puts third-quarter revenue at about USD 17.0 billion. That is up roughly 1,127% from a year earlier and 47% on the second quarter, when growth ran at 144%. Nine-month revenue reached USD 33.2 billion. The quarter also swung to a USD 567 million operating loss, after USD 974 million of operating income in Q2, which the filing links to USD 5.0 billion of compute bought under costlier short-term commitments. Adjusted operating income was USD 2.5 billion, a 15% margin, down from 19%. The headline USD 23.3 billion net loss was mostly a USD 21.9 billion non-cash charge.
The balance sheet tells the story of scale. Anthropic disclosed about USD 895.4 billion in aggregate purchase and lease commitments, substantially all for compute and infrastructure, with USD 447.5 billion expected through 2030 and USD 69.8 billion due within 12 months. More than 11,900 customers now spend over USD 100,000 a year. The filing also flags that some compute partners rely on outside financing, so contracted capacity could slip if that funding gets more expensive. Anthropic is separately reported to be seeking up to USD 3.5 billion from Japanese investors ahead of a Nasdaq listing.
The most consequential new paragraph for builders sits on page 29. Anthropic says its internal estimates and expectations for future models indicate it may imminently meet its Responsible Scaling Policy definition of dramatically accelerated progress attributable to AI, or as much progress in one year as the 2018 to 2024 baseline saw in two. The company stresses it has not designated current models as crossing that threshold and is still assessing the data. But it warns it may adopt stricter precautionary measures, including delaying releases or limiting initial availability. For founders, that means faster model releases and the possibility of tighter limits arriving with little notice.