Anthropic, the AI lab behind the Claude chatbot, revealed Monday that it pulled in $33.24 billion in revenue over the first nine months of 2026 — nearly tripling its haul from a year earlier — in an amended IPO filing that landed just as Wall Street tried to shake off a brutal month-long tech selloff.

The updated S-1, filed with the SEC ahead of a planned Nasdaq listing under the ticker "ANT," shows the company's operating loss narrowing sharply to $1.26 billion for the nine-month period, or roughly 3.8% of revenue, down from an operating loss equal to about 205% of revenue over the same stretch last year. Third-quarter revenue alone came in around $17 billion, up from about $11.6 billion in the second quarter and just $1.4 billion a year earlier, according to Fortune's review of the filing.

Growth slows, costs jump

The quarter wasn't all good news. Anthropic swung back to an operating loss of roughly $567 million in the third quarter — reversing a $974 million operating profit in the second quarter — which the company attributed mainly to a surge in costs from short-term compute commitments. The filing also disclosed a staggering $895.4 billion in committed compute and infrastructure spending, underscoring just how much cash the AI boom demands from even its biggest winners.

Separately, Anthropic reported a net loss far larger than its operating figures — one largely driven by non-cash, non-operating fair-value changes on convertible notes and derivatives tied to the company's soaring valuation, rather than by its actual business operations.

ANTHROPIC'S OPERATING LOSS FELL FROM ABOUT 205% OF REVENUE TO UNDER 4% IN A SINGLE YEAR.

The filing landed on a day when markets were already clawing back ground. The Dow, S&P 500 and Nasdaq all opened higher Monday, rebounding from a stretch that had wiped roughly $5 trillion off AI-linked stocks over three weeks, partly on reports that the U.S. and Iran are pursuing a diplomatic resolution to their standoff, which pushed oil prices lower. Oracle separately announced a $20 billion capital raise — split between bonds and stock — to help fund its own AI infrastructure buildout, sending its shares down about 5%, while Alphabet and Microsoft have both tapped debt markets in recent weeks for similar reasons.

Apple was scheduled to report its own quarterly results after Monday's closing bell, with analysts projecting roughly $2 in earnings per share on revenue near $113.46 billion, as investors brace for a packed week that also includes the midterm elections and Friday's October jobs report.

For Anthropic, the amended filing is the clearest look yet at the economics behind one of the AI boom's most closely watched companies — a business growing at a pace few have seen, but one whose bills, for now, are growing almost as fast.