Anthropic Posts $17 Billion Q3 Revenue and $900 Billion Compute Bill in Amended IPO Filing

Anthropic filed an amended S-1 prospectus with the SEC on Monday, disclosing Q3 2026 revenue of $16.96 billion, up 1,127% year-over-year from $1.38 billion in the same quarter a year ago. Nine-month revenue reached $33.2 billion, compared to $2.5 billion over the same stretch in 2025, a roughly 1,200% increase. The updated filing gives prospective IPO investors their first look at the company's full-year financials, with a market debut potentially coming before the end of November.

Despite the revenue surge, Anthropic swung back to an operating loss in Q3, recording a $567 million operating loss after posting a $974 million operating profit in Q2. The reversal was driven primarily by $5 billion in higher-cost short-term compute purchases and a $2 billion noncash donation-matching charge. Total Q3 operating expenses reached $17.5 billion, with compute and infrastructure alone accounting for $9.86 billion, up 382% year-over-year. On an adjusted basis, Anthropic reported $2.5 billion in operating income and a 15% adjusted operating margin, down from 19% in Q2.

The Q3 net loss deepened to $23.3 billion from $12.1 billion a year earlier, including a $21.9 billion noncash charge. Over the nine months ended September 30, the net loss totaled $104 billion, largely reflecting $94.3 billion in noncash charges tied to the rising value of its convertible notes. The company ended September with $95.6 billion in cash and $36.3 billion in short-term investments, for a combined $131.9 billion liquidity position.

Anthropics aggregate committed spend stands at approximately $895.4 billion as of and subsequent to September 30, up sharply from roughly $105 billion at the end of 2025. Of that total, $447.5 billion is due before 2031 and $69.8 billion falls due within 12 months. Total contractual obligations as of September 30 were $320 billion, with 2026 obligations alone reaching $5.23 billion. The company separately disclosed that it raised its minimum Google Cloud spend commitment by $6.8 billion to $121.3 billion through July 2033, and it estimates $125 billion to $150 billion in added TPU capacity between 2028 and 2031 sourced via Google Cloud, direct Google TPU purchases with five-year financing, or third-party providers. Google also holds an option to buy up to $10 billion in Anthropic shares at the IPO price. Broadcom is the other top supplier, with a deal valued at approximately $161 billion. The committed spend figure trails only Alphabet, whose own committed spend stands at $1.059 trillion, while Meta sits at $866 billion.

On the customer side, the number of clients with at least $100,000 in trailing 12-month revenue exceeded 11,900 in Q3. Anthropic flagged that up to 7% of its revenue came from customers found to be violating its usage policies, and a crackdown on those accounts could slow growth. The company also noted that cloud partners cannot currently supply all the compute it needs, and it plans to spend more than $600 billion on compute going forward. Anthropic added that it remains committed to keeping its Claude models free of advertising.