OpenAI has secretly filed for an initial public offering (IPO) with the U.S. Securities and Exchange Commission, potentially going public as early as this fall. The company is collaborating with Goldman Sachs and Morgan Stanley to facilitate the listing process. While OpenAI has not finalized the timing, it plans to launch a share sale soon to provide liquidity for employees. This move comes amid competitive pressures, as rival Anthropic also filed for an IPO last week, with a valuation of $965 billion, surpassing OpenAI's recent $852 billion valuation. Meanwhile, SpaceX is set to go public on Thursday with a valuation of approximately $1.8 trillion.