SAN FRANCISCO – In a landmark move signaling a coming shift in the artificial intelligence industry, ChatGPT developer OpenAI announced Monday it has confidentially submitted an S-1 registration statement to U.S. securities regulators, taking the first formal step toward an initial public offering. The announcement comes just seven days after its top competitor, Anthropic—creator of the Claude AI chatbot—disclosed that it had completed the same confidential filing, as two of the sector’s highest-profile players race to unlock billions in new capital to fuel their rapid expansion.