Anthropic Posts $80.7B Half-Year Net Loss in Draft IPO Prospectus; Compute Tab Tops $600B

What happened

Wall Street Journal reporter Anissa Gardizy published an exclusive on Oct 20: she reviewed Anthropic's confidential draft IPO prospectus (S-1) filed with the SEC, which discloses the company's first-half 2026 financials for the first time. The filing was submitted confidentially and is not yet public, so the figures may change before publication. Anthropic declined to comment.

The draft shows Anthropic with roughly $16.3 billion in H1 2026 revenue and an $80.7 billion net loss, about $72 billion of which came from accounting adjustments tied to changes in the value of convertible notes and other financing instruments. It also lists more than $600 billion in compute and infrastructure commitments, noting that roughly $150 billion of capacity under negotiation could take the total to about $750 billion.

Key facts

1. Revenue and loss:H1 2026 revenue of about $16.3 billion, versus about $1.1 billion a year earlier and about $4.6 billion for all of 2025; net loss of $80.7 billion, versus $13 billion in the year-earlier period.
2. What drove the loss:about $72 billion of the net loss came from accounting adjustments tied to changes in the value of convertible notes and other financing instruments, not cash spending.
3. Customer concentration:about one-fifth of H1 revenue came from just two customers; the company expects a significant portion of revenue to keep coming from a limited number of customers.
4. Compute bill:signed compute and infrastructure commitments exceed $600 billion; about $150 billion of capacity under negotiation would take the total to roughly $750 billion.
5. Third quarter:Reuters reported last week that Anthropic told pre-IPO investors third-quarter revenue reached $16.8 billion, up 45% quarter over quarter.
6. IPO timeline:the company is expected to list in November; Reuters reports some investors are discussing a valuation of about $1.5 trillion, down from the roughly $2 trillion previously expected.