Anthropic files for IPO at $965B valuation, surpassing OpenAI

Anthropic has confidentially filed for an IPO after a $65 billion Series H round valued it at $965 billion, the largest private valuation of any AI company to date. Founders Dario and Daniela Amodei retain control alongside an independent Long-Term Benefit Trust, not Amazon or Google despite their tens of billions in funding.

• Series H on May 28, 2026: $65B raised at a $965B post-money valuation
• Confidential IPO filing submitted on June 1, 2026
• Amazon and Google are top investors but hold no board seats
• Long-Term Benefit Trust will elect a board majority within 4 years