The big questions remaining after Anthropic’s blockbuster IPO prospectus
Uncertainties remain ahead of one of the most hotly anticipated IPOs in history.

TL;DR
- Anthropic's S-1 filing detailed its financials, reporting $16.29 billion in revenue and $2.38 billion in cost of revenue for the first half of 2026, yielding an 85% gross margin.
- Revenue growth slowed from approximately 144% in Q2 to 47% in Q3 2026, raising concerns about future growth pace.
- A significant portion of the cost of revenue is tied to compute and infrastructure, with uncertainties regarding future cost trends and capacity.
- Anthropic's corporate structure as a public benefit corporation, with seven co-founders holding majority voting power, presents a unique governance model with no public company precedent.
- The IPO valuation is undisclosed but is anticipated to be between $1 trillion and $2 trillion, a crucial factor for the AI sector's market sentiment.