Anthropic Submits Confidential U.S. IPO Filing on June 1, 2026, Valuation Above $965B

Anthropic filed a confidential registration for a U.S. IPO on June 1, 2026, putting it ahead of OpenAI in the move toward public markets. The company's valuation rose above $965 billion after a $65 billion round in late May 2026, and both labs are discussed as potential autumn 2026 listings.