Anthropic files for initial public offering in late 2026

Anthropic, the artificial intelligence company, filed secret IPO paperwork with US regulators on June 1, 2026. The company plans to go public in November 2026. Its rival OpenAI filed similar paperwork about one week later and expects to hold its own IPO in 2027.

Filing first gives Anthropic an advantage. Investors and analysts will use Anthropic's valuation to judge OpenAI when it eventually goes public. The company that sets the price first shapes how the market thinks about both businesses.

Anthropic was founded in 2021 and currently spends more money than it earns. Regulators usually take four to eight weeks to review these filings, so Anthropic's full financial details should become public in late summer 2026.