AI giant Anthropic ​said on Monday it has confidentially filed for a ‌U.S. ⁠initial ⁠public offering, teeing up ​what could become the watershed moment ​for Wall Street's AI frenzy.The move sets ​up a ⁠high-stakes test ‌of whether ​investor appetite ​for the ⁠AI revolution that has reshaped ​white-collar work around the world ​can match the sky-high expectations surrounding the booming sector.Anthropic did not disclose ‌the size or terms of the offering. ​It ​last ⁠raised $65 billion at a post-money valuation of $965 billion in late ​May, putting it ahead of rival OpenAI.