On May 28, Anthropic officially announced the completion of a $6.5 billion Series H funding round co-led by Microsoft, Google, and Amazon, pushing the company's valuation to $900 billion, surpassing OpenAI to become the world's most valuable private AI company. On June 1, Anthropic further confidentially filed an S-1 prospectus with the U.S. SEC, launching its IPO process. It plans to officially list in the fourth quarter of 2026, with an expected fundraising scale exceeding $20 billion. The funds will primarily be used for computing infrastructure construction and Claude series model R&D.
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