ANTHROPIC SECRETLY PREPARES FOR TRILLION-DOLLAR IPO — FILED PAPERWORK WITH SEC BEFORE OPENAI COULD BLINK Anthropic, the company behind the Claude AI models, quietly filed a confidential S-1 registration statement with the Securities and Exchange Commission on June 1, moving ahead of rival OpenAI in the race to go public. The company is targeting a valuation that could exceed a trillion dollars, which would make it one of the largest IPOs in American history if it clears that threshold. The timing is not accidental. Anthropic spent the last month raising $65 billion in a Series H funding round that pushed its valuation to $965 billion. Revenue is tracking at roughly $47 billion on an annualized basis as of May, up from about $10 billion just a year earlier. That is not a typo. The company grew its revenue nearly fivefold in twelve months. Claude Code, Anthropic’s AI coding assistant, deserves much of the credit. It has become the dominant tool in AI-assisted software development, pulling enterprise customers and developers away from competitors at a pace few expected. The confidential filing means the SEC will review the prospectus before Anthropic officially goes public, and the actual IPO will depend on market conditions. But the message to Wall Street is clear. Anthropic is coming, and it is not waiting for anyone. OpenAI is preparing its own filing, meaning the two biggest names in AI could both go public within the same year. Keywords: Anthropic IPO, Claude AI valuation, AI IPO 2026, SEC S-1 filing, Anthropic valuation