Anthropic's revised IPO prospectus: Q3 revenue reaches $17 billion, nine-month revenue $33.2 billion, massive accounting losses persist

November 2 — Artificial intelligence company Anthropic (developer of the Claude large model) today submitted an amended IPO prospectus (S-1/A) to the SEC. The filing shows the company's commercialization process is extremely rapid: Q3 2026 revenue reached $17 billion, with total revenue of $33.242 billion for the first nine months; meanwhile, net loss soared to $104.039 billion due to fair value changes in convertible notes, but operating losses have narrowed significantly.

The prospectus discloses that Anthropic's revenue grew from nearly zero at the initial commercialization stage in 2023, to approximately $4.585 billion for full-year 2025, and then to $33.2 billion for the first nine months of 2026. Of this, Q3 alone contributed $17 billion, continuing the strong momentum of approximately $16.3 billion in the first half.

Net revenue retention (NRR) is approximately 900%, indicating rapid expansion of existing customer spending. The company emphasizes that its "improvement loop" (customer feedback accelerating model iteration) and "investment loop" (revenue reinvested into compute and research) form a positive feedback cycle.

Operating performance has improved markedly: operating loss narrowed to approximately $1.26 billion for the first nine months (major costs include approximately $18.8 billion for compute and infrastructure, approximately $4.86 billion for personnel, etc.). Cash and short-term investments totaled approximately $131.9 billion (as of September 30), demonstrating extremely strong fundraising capacity. However, the company also disclosed compute and infrastructure-related commitments of approximately $895.4 billion (approximately $69.8 billion due within the next 12 months), highlighting capital intensity and long-term lock-in risks.

Of the nine-month net loss of $104.039 billion, the vast majority (approximately $94.3 billion) came from fair value changes in convertible notes, derivative liabilities, and similar items — these are non-cash accounting charges arising from valuation increases, not actual cash consumption. The first half (as of June 30) had already recorded a net loss of approximately $80.7 billion, and the amended version continues and updates this logic.