Will OpenAI or Anthropic IPO first?

**Interpretation and framing (important):** I read the binary question as asking whether *either* OpenAI or Anthropic will complete a public IPO before 2040 (i.e., at least one of the two goes public prior to 2040). If the market uses a different interpretation (e.g., whether one of them will be the first among all AI companies), that would change calibration; I discuss that ambiguity below.

**Stage 1 — Blind analysis (ignore market price):**

- Both companies have taken concrete, formal steps consistent with an eventual IPO: confidential S‑1 filings (Anthropic reportedly a few days earlier than OpenAI) and public statements about preparation. Historically, confidential filings are strong leading indicators that a company intends to pursue a listing within a multi‑year horizon. Over the next 14 years (to 2040) many macro and company-specific obstacles can arise, but the time horizon is extremely long relative to corporate lifecycle and typical exit paths.

- Incentives to go public are strong for both firms: large employee equity pools needing liquidity, existing investors expecting exits, and the desire to access much larger pools of capital to fund compute, R&D, and competitive positioning. Both incumbents already work with large cloud partners and strategic investors but still face capital and governance drivers that push toward IPOs rather than permanent private ownership.

- Acquisition is possible but unlikely to systematically prevent both from ever IPOing by 2040. A full acquisition of either firm (e.g., by a cloud provider) would remove that firm from the IPO race, but acquisitions of this scale are complex given the firms' governance, strategic partnerships, and regulatory scrutiny; they are plausible but not the majority outcome across both companies over 14 years.

- Regulatory or political interventions (export controls, forced restructuring, or bans on certain corporate forms) represent a non‑zero risk but are unlikely to completely prevent both companies from listing by 2040. More likely outcomes would be delays, specific disclosures, or platform constraints, none of which make IPOs impossible over the long run.

Taken together: given confidential filings now, strong incentives for liquidity and capital, and the long 14‑year window, the chance that at least one of the two has an IPO before 2040 is extremely high. I therefore place an independent probability at 97%.

**Stage 2 — Market calibration (compare to market price 0.72):**

- The current market price of Yes = 0.72 implies market participants assign roughly a 72% chance that at least one will IPO by 2040. My independent 97% is substantially higher. Possible reasons the market is lower: - *Ambiguity in wording:* Traders may be interpreting the question differently (for example, as asking which firm will IPO *first among all AI startups*, or as asking whether *one of them will specifically be the first* to IPO among a larger set), which would reduce apparent probability. - *Eventual acquisition/never‑public bias:* Many traders overweight the acquisition outcome or the possibility that the companies stay private indefinitely (particularly given recent high‑profile private unicorns that delayed IPOs). The market may be extrapolating post‑2021 private market behavior into the long horizon. - *Regulation and political risk premium:* Traders might currently attribute a large probability to regulatory impediments, national security intervention, or structural governance constraints preventing an IPO — even though those outcomes are unlikely to block both firms for 14 years. - *Discounting/confidence/information asymmetry:* Some market participants may be skeptical of confidential filings or expect long, multi‑year delays; others may simply prefer conservative pricing when uncertainty or ambiguous wording exists.

- Given these explanations, I conclude the market is likely underpricing the 'Yes' outcome relative to the objective facts. The gap is substantial and mostly attributable to semantic ambiguity and elevated short‑term risk aversion rather than new objective barriers to an eventual IPO.

**Implications:** If you accept my interpretation of the question (at least one IPO by 2040), the market at 0.72 appears to offer value for the 'Yes' side. If the market interpreted the question differently, re‑read the contract's official definition before acting.