On June 9 local time, OpenAI officially confirmed it has secretly filed an S-1 form and plans to initiate its IPO process as early as the fourth quarter of this year. OpenAI was last valued at $730 billion, and if successful, its listing would rank among the largest IPOs in U.S. stock market history. Meanwhile, rival Anthropic is also advancing toward an IPO, with a reported valuation as high as $900 billion. Bettors on crypto prediction markets are wagering that Anthropic will go public in June. According to CNBC, Perplexity plans to pursue an IPO in 2028. Notably, OpenAI’s move comes just ahead of SpaceX’s anticipated IPO and one week after U.S. AI firm Anthropic confidentially submitted a draft IPO filing to the U.S. Securities and Exchange Commission. In this wave of mega AI IPOs, which company do you favor more?