ChatGPT maker OpenAI filed preliminary paperwork that would open the door to it becoming a publicly traded company, the third in a powerhouse trio of artificial intelligence companies racing to Wall Street debuts. The San Francisco-based company said Monday it has filed confidential paperwork with the U.S. Securities and Exchange Commission. “We expect it to leak so we’re just announcing it,” the company said in a written statement. “We have not decided on timing yet; it