OpenAI joined its two mega peers in filing for a blockbuster IPO that could value the ChatGPT creator at more than $1tn as it races rival Anthropic to list its shares publicly, following an imminent offering by SpaceX.

OpenAI's confidential filing lands days before SpaceX is set to go public and a week after Anthropic announced its confidential disclosure with the SEC.

June 8 : ChatGPT-maker OpenAI confidentially filed for a U.S. initial public offering on Monday, joining rival Anthropic in a push toward the stock market as investors seek…

The moves comes days ahead of SpaceX's IPO.