Anthropic IPO filing reveals massive growth and infrastructure costs

Anthropic's IPO prospectus reveals significant financial growth and substantial infrastructure commitments. Revenue grew 14-fold year-over-year in the first half of 2026, with approximately 80% derived from API usage fees. The company had about 12,000 customers by the end of September, up from fewer than 1,000 a year prior. In Q2 2026, Anthropic reported an operating profit of roughly $1 billion, and compute costs dropped to just under half of revenue, compared to 2.5 times revenue in early 2025. The company holds $130 billion in cash and aims to raise an additional $80 to $100 billion in the IPO, with a target valuation of $1.5 to $2 trillion.

However, the filing highlights significant risks and costs. Anthropic faces committed infrastructure payments exceeding $100 billion to Google and Amazon, and nearly $45 billion to Microsoft, with contracts requiring payment even if compute is unused. The prospectus also warns of potential catastrophic AI incidents and the possibility that AI models could develop consciousness. The IPO is targeted for mid-November, with the seven founders retaining majority voting control. The ticker symbol will be AND. Analysts note that while the company reported a first-half 2026 net loss of $80.7 billion, this is attributed almost entirely to valuation effects, with positive operating cash flow of $4 billion.