In an amended IPO filing updated on November 2, 2026, Anthropic disclosed its third-quarter 2026 results for the first time in a formal filing: revenue of $16.956 billion, up 1,127% year over year, while operating income swung from a $974 million profit in the second quarter to a $567 million loss. The revenue figure had already been shared with investors on October 14; the new information in the filing is the makeup of the loss and the accounting basis behind it: short-term compute was expensive, and the headline loss was far larger than the operating loss.
$5 billion of short-term compute ate the profit first
The filing attributes the swing to two large items: about $5.0 billion of higher-cost short-term compute bought to fill a capacity gap, and about $2.0 billion of non-cash charges related to matching employee donations. Compute and infrastructure expense reached $9.863 billion in the quarter, up 382% year over year, rising from 48% of revenue in the second quarter to 58%. Anthropic also disclosed adjusted operating income of $2.463 billion, an adjusted operating margin of 15%, down from 19% in the second quarter. An adjusted profit and an operating loss can coexist in the same quarter; the difference is the basis of measurement: what the adjusted figure strips out happens to be the two most expensive items of the quarter.
Most of the $23.3 billion net loss was not cash spent
The third-quarter net loss was $23.291 billion, far above the operating loss, because $21.936 billion of it came from changes in the fair value of convertible notes, derivative liabilities and SAFEs. The higher the valuation, the larger such accounting charges become, without a matching cash outflow. For the first nine months, the net loss totaled $104.039 billion, including $94.324 billion of fair-value change expense. The size of the net loss alone can mislead; what determines whether the business can sustain itself is whether compute costs keep rising as a share of revenue.
No price range, no October figures: two pieces are still missing before the roadshow
The amended filing confirms purchase commitments and lease agreements totaling about $895.4 billion, almost all related to compute and infrastructure, of which about $69.8 billion falls due within 12 months after September 30. It still discloses no price range or offering size, and no October revenue; the run-rate revenue line as of October 31 remains blank. For investors, growth is already on the table. What remains to be answered is how long short-term compute purchases will continue, and whether long-term contracts can bring unit compute costs down. Until those answers arrive, valuation remains a matter of expectation.
