OpenAI files confidential IPO, timing still undecided

OpenAI announced on Monday that it has confidentially filed an S‑1 with the U.S. SEC, confirming a valuation of $852 billion but adding that “we have not decided on timing yet” and may stay private longer to pursue projects more easily as a private firm [1][2].

IPO filing and strategic trade‑offs

OpenAI’s filing joins Anthropic’s recent confidential IPO submission and comes a week before Elon Musk’s SpaceX is slated to go public. The confidential filing lets the company share detailed financials with regulators while keeping the prospectus private, a step CFO Sarah Friar called “good hygiene” for a business of its size [2]. OpenAI also plans a tender offer that would let employees sell shares at the latest valuation, a move aimed at easing near‑term liquidity pressure [2].

Competitive context and market pressure

Anthropic, OpenAI’s chief rival, filed its IPO after a funding round that valued it at $965 billion—higher than OpenAI’s $852 billion valuation reported in March [1][2][3]. Both firms now sit behind AI‑heavy public giants such as Nvidia, Google, and Microsoft, which collectively command trillions in market cap. The dueling IPO efforts could accelerate as each seeks to capture the “massive amount of capital” flowing into AI, especially after SpaceX’s trillion‑dollar offering is expected to set a benchmark for mega‑IPOs [2][3].

OpenAI’s revenue and user growth have also come under scrutiny. The company disclosed that it missed several internal revenue and user targets, citing fierce competition from Anthropic and Google’s Gemini model [3]. Meanwhile, ChatGPT continues to attract over 900 million weekly active users, a metric that underscores the firm’s consumer‑brand strength but also raises questions about monetisation and cost‑structure given its $180 billion cumulative funding and ongoing compute spend [2].

What to watch

• IPO timing signals – Any update from OpenAI on a filing amendment or a roadshow launch will indicate whether the company leans toward a near‑term public debut or prefers to stay private longer.
• Anthropic’s pricing – The pricing range announced in Anthropic’s S‑1 (if disclosed) will set a direct valuation benchmark for OpenAI’s eventual offering.
• SpaceX IPO performance – Investor appetite for SpaceX’s trillion‑dollar float could shape the pricing environment for AI‑centric mega‑IPOs.

OpenAI’s confidential filing confirms that the AI sector’s biggest private players are now courting public markets, but the lack of a firm timeline leaves investors watching for the next signal of when the “third phase” of OpenAI’s growth will translate into a public valuation.