🤖 Anthropic vs OpenAI — Which AI Giant Goes Public First? My Honest Prediction

The AI IPO race just got officially real.
SpaceX filing its S-1 with the SEC today — potentially listing within 23 days — has set the tone for what could be the most extraordinary IPO season in market history. And right behind SpaceX, two AI giants are lining up for their own public market debuts this fall. Anthropic and OpenAI both targeting capital markets simultaneously creates a genuine competition that Polymarket is now pricing in real time.
So which one goes public first? Let me give you my honest analysis.
The case for OpenAI going first is strong.
Goldman Sachs and Morgan Stanley are already handling IPO documents with applications potentially submitted as early as this Friday. That timeline is extraordinarily aggressive — suggesting OpenAI's internal preparation is further along than most people realized. The lawsuit from Musk was just dismissed removing a significant legal overhang. Secondary market valuations approaching $1 trillion confirm institutional demand is already lined up and waiting. OpenAI has the brand recognition, the revenue trajectory and the investment banking firepower to move faster than any competitor.
The case for Anthropic is equally interesting though.
Anthropic has been quietly building institutional relationships with Google and Amazon as major strategic investors. Those relationships provide both capital stability and enterprise customer pipelines that make the IPO story compelling to public market investors. Anthropic's focus on AI safety as a core differentiator appeals to a specific category of institutional investor that is increasingly important in the current regulatory environment. And with OpenAI facing the complexity of its nonprofit-to-profit conversion structure — Anthropic's cleaner corporate structure could actually allow faster regulatory approval for public listing.
The wildcard is timing pressure from SpaceX. With the largest IPO in history potentially absorbing tens of billions in institutional capital within 23 days — both Anthropic and OpenAI face a strategic choice. Rush to market before SpaceX dominates the IPO calendar. Or wait for the dust to settle and capture refreshed institutional appetite afterward.
My prediction — OpenAI goes public first.
Goldman and Morgan Stanley moving this week is not coincidence. When two of the most powerful investment banks in the world are handling your documents simultaneously with reported Friday submission timing — you are not months away from listing. You are weeks away.
Anthropic follows within the same fall window but OpenAI crosses the finish line first.
What is your prediction — Anthropic or OpenAI first? Drop your call and reasoning below 👇
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