Anthropic Files S-1 for IPO as AI Lab Faces Scrutiny Over $417B Compute Commitments and Customer Concentration

Anthropic has filed a preliminary registration statement on Form S-1 with the U.S. Securities and Exchange Commission, marking a major step toward a public offering that could value the AI developer at over $2 trillion. The filing on October 26, 2026, reveals a company experiencing explosive growth—$16.3 billion in revenue for the first half of 2026, up 1,300 percent year-over-year—but grappling with substantial infrastructure costs and concentrated customer dependence.