A day after Elon Musk's legal challenge against OpenAI fell apart in court, the artificial intelligence company is pushing ahead with plans to go public, according to people familiar with the matter who spoke to the Wall Street Journal. CEO Sam Altman is aiming to have OpenAI ready for an initial public offering by September. The ChatGPT creator has been coordinating with investment banking giants Goldman Sachs and Morgan Stanley, and confidential IPO paperwork could be submitted to regulators within the coming days or weeks. The timing of OpenAI's IPO ambitions is notable given that Musk's lawsuit had threatened the company's corporate structure, its leadership, and its access to funding. The lawsuit, which alleged that OpenAI had strayed from its original nonprofit mission, was dismissed by a California judge. With that legal obstacle cleared, OpenAI can now pursue public markets without the uncertainty that litigation would have introduced. Musk and Altman are now set to clash in a new arena: the stock market. SpaceX, the rocket company that Musk controls, is expected to file for its own IPO as soon as Wednesday, reports indicate. The two have become direct competitors following Musk's consolidation of his AI venture xAI into SpaceX's operations. Industry observers will be watching to see which company commands a larger valuation when both eventually debut on public markets. OpenAI declined to comment on the IPO plans when reached for response.