Claude maker Anthropic confidentially files for US IPO

Anthropic IPO: Artificial intelligence (AI) giant Anthropic has confidentially submitted draft papers with the U.S. Securities and Exchange Commission for a proposed initial public offering.

The number of shares on offer and the price have not been decided yet, the Claude operator said in an statement. "It is not an offer to sell securities; nor is it a solicitation of an offer to buy them. Any offers, solicitations of offers to buy, or any sales of securities will be made only in accordance with the registration requirements of the Securities Act," it said.

Anthropic said that the proposed initial share sale will depend on market conditions and other factors after the SEC completes its review.

Anthropic's IPO could be among the biggest ever, along with proposed issues of SpaceX and OpenAI.

SpaceX has already filed draft papers, while OpenAI is planning to debut this year.

Last month, Anthropic had raised $65 billion in Series H funding led by Altimeter Capital, Greenoaks, Dragoneer, and Sequoia Capital, valuing the firm at $965 billion post-money.

The funding round was co-led by Coatue, Capital Group, D1 Capital Partners, ICONIQ, XN and GIC. Key investors in the round include Baillie Gifford, Blackstone, AMP PBC, Brookfield, DST Global, Fidelity Management & Research Company, General Catalyst, D.E. Shaw Ventures, Insight Partners, Lightspeed Venture Partners, MGX, NTTVC, NX1 Capital, Jane Street, Situational Awareness LP, Temasek, T. Rowe Price Associates, Inc, and T. Rowe Price Investment Management, Inc. It also consists of $15 billion of earlier committed investments from hyperscalers, including $5 billion from Amazon.

Global companies across industries are employing Claude in their core operations, and a large number of people around the world are using it for their daily work. Since its Series G in February 2026, adoption has climbed across global enterprise customers, and its run rate revenue surpassed $47 billion in May.

"This latest funding is expected to advance our safety and interpretability research, expand compute to meet growing demand for Claude, and scale the products and partnerships our customers rely on," the company said.