Will OpenAI or Anthropic IPO first?
**Assumption:** 'Yes' = OpenAI will IPO before Anthropic. Independent assessment: I assign a 35% probability that OpenAI will IPO before Anthropic (i.e., Anthropic is more likely to be the first of the two to list).
Analysis
Stage 1 — BLIND ANALYSIS (ignore current market price):
Assumption / interpretation: the binary question is read as "Will OpenAI IPO before Anthropic?" (Yes means OpenAI first). There is no verified public filing or announcement for either company, so this assessment relies on structural incentives, known governance models, investor incentives, historic analogues of similar private companies, and likely regulatory pressures.
Key points informing an independent probability: - *Corporate structure & incentives.* Anthropic is a conventional for-profit private company with outside investors who typically seek liquidity events (acquisition or IPO). That creates a strong, direct incentive to pursue an IPO on a multi-year horizon. OpenAI began with a hybrid/capped-profit structure plus deep strategic alignment with Microsoft; that structure reduces the simple investor-driven pressure to list and creates additional governance friction around going public. - *Strategic investor dynamics.* Microsoft is a very large, strategic investor and partner of OpenAI — it has commercial, technical, and product incentives to keep OpenAI closely held if that preserves competitive advantage for Azure/Office ecosystem. Microsoft could prefer acquisition-like control or special commercial arrangements rather than a broad-market IPO. Anthropic has large backers too (including cloud providers and VCs), but their stakes and relationships are more typical of companies that eventually IPO. - *Revenue & capital needs.* OpenAI has shown substantial monetization (ChatGPT subscriptions, enterprise deals) that could support either a delayed IPO or staying private while Microsoft-backed funding remains plentiful. Anthropic may need ongoing capital growth and may view an IPO as attractive to fund product scale or provide early liquidity to investors/employees. - *Regulatory & public-safety concerns.* Both companies operate in a sensitive regulatory area (AI safety, national security). Regulators or political scrutiny could delay or complicate either IPO, but these dynamics may affect OpenAI more given its higher profile and closer ties to large tech incumbents. - *Historical analogues.* When a dominant strategic partner holds a large stake, startups often delay or avoid IPOs (examples: some enterprise-focused, cloud-integrated startups). Conversely, independent for-profit AI startups (or deep-tech companies with clear revenue paths) often pursue exits via IPOs earlier.
Balancing these forces leads me to believe Anthropic has a structurally easier, more conventional path to an earlier IPO. OpenAI faces meaningful institutional inertia, governance complexity, and a powerful strategic investor that may prefer other outcomes. Given the long horizon until 2040, both can plausibly IPO — but the probability that OpenAI is first is meaningfully less than 50%. I place that probability at 35%.
Stage 2 — MARKET CALIBRATION (compare independent view to current market prices):
The market price you provided (Yes: 0.80, No: 0.20) implies strong market belief that OpenAI will IPO before Anthropic. That diverges sharply from my independent view (35%). Possible explanations for the market leaning heavily toward OpenAI-first: - *Insider signals / non-public information*: Large volume (303k contracts) could reflect traders with access to soft signals (bankers, VCs, underwriters, or executives) indicating OpenAI is preparing an IPO. If true, the market price would rationally reflect insider info that I don't have. - *Recency / brand bias*: Public-facing success of ChatGPT, high revenue runs, and huge brand recognition can create heuristic bias toward OpenAI being 'ready' to go public sooner. Traders may overweight visibility and monetization vs. governance complexity. - *Liquidity/hedging flows*: Market makers or institutional hedgers might have positioned heavily on OpenAI-first for portfolio hedging or correlation reasons, pushing the observable price higher. - *Misinterpretation of question / ambiguous market framing*: If some participants interpret the question differently (e.g., 'Which of OpenAI or Anthropic will ever IPO first, ignoring mergers or acquisitions?'), that could drive divergent prices.
Given these possibilities, the high market price could be correct (if insiders know things), or it could be overconfident due to narrative bias or structural flows. I view the market as potentially mispriced relative to publicly observable fundamentals unless there is credible non-public information favoring OpenAI. My calibration: treat the market price as a signal to watch for leaks/announcements — but absent such signals I would bet on Anthropic-first more than the market does.
Bottom line (independent): 35% that OpenAI will IPO before Anthropic. Market is currently much more bullish on OpenAI-first; that may reflect private information or narrative-driven mispricing.
Arguments
For
- Arguments for Yes (OpenAI IPOs before Anthropic): - *Dominant revenue and public momentum*: OpenAI's consumer and enterprise traction (ChatGPT/enterprise deals) accelerates pressure to monetize via public markets and could push OpenAI to list early. - *Valuation realization:* Major investors (and potentially Microsoft) may prefer the liquidity and valuation discovery an IPO provides, especially if private valuations diverge or new capital is needed. - *Public company advantages:* Listing could make it easier to recruit/retain talent via liquid equity and to fund large infrastructure spend without diluting strategic partnership structures. - *Narrative and brand power:* Public market investors may be eager to own the 'leader' in generative AI, making an IPO attractive and likely to be well-received if timed correctly.
Against
- Arguments against Yes (Anthropic more likely to IPO first): - *Simpler for-profit governance:* Anthropic's conventional corporate structure and investor base create clearer incentives to pursue an IPO sooner than a hybrid/mission-focused entity. - *Strategic investor influence on OpenAI:* Microsoft's large, strategic stake and commercial ties reduce OpenAI's pressure to pursue a public offering and may favor private control or alternative liquidity mechanisms. - *Mission/governance constraints:* OpenAI's charter and safety-first framing could lead it to delay or avoid public markets to preserve control over sensitive capability deployment. - *Regulatory exposure & visibility:* OpenAI's higher profile may attract more intense scrutiny, making the company cautious about the transparency and disclosure requirements of an IPO.
Key drivers
- Corporate/governance structure of OpenAI (capped-profit & Microsoft partnership) vs Anthropic's conventional for-profit structure
- Investor liquidity preferences — VCs and backers pressuring for an IPO or accepting a later private liquidity path
- Strategic interests of large partners (Microsoft and cloud providers) that can encourage or discourage public listing
- Regulatory and political scrutiny of AI platforms that could delay or shape IPO timing
- Capital needs and revenue trajectories of each company (cash burn vs cash-generating)
- M&A risk — potential acquisition by a strategic (e.g., Microsoft) or mega-deal that pre-empts either IPO
Risk factors
- Private / insider information: market participants may be trading on non-public signals (filings, banker outreach) that change probabilities rapidly
- Regulatory shock: major government intervention or regulation that restricts business models could materially delay IPOs
- Acquisition: either company could be acquired (especially OpenAI by Microsoft or Anthropic by a cloud giant) which would remove the IPO outcome entirely or change ordering
- Structural conversion: OpenAI could change its legal/financial structure (e.g., convert to a more conventional for-profit or be folded into a corporate vehicle) altering incentives
- Macro capital markets: prolonged bear markets or higher interest rates could delay IPO windows for both companies, impacting who goes first
Scenarios
Best case
OpenAI files and completes an IPO well before Anthropic: OpenAI restructures (if necessary), obtains agreement with major stakeholders (including Microsoft), times the market when investor appetite for AI is strong, and lists before Anthropic — driven by revenue momentum and investor desire for liquidity.
Most likely
Anthropic lists before OpenAI: Anthropic follows a conventional for-profit path to an IPO within the next decade driven by investor liquidity needs and growth capital; OpenAI delays listing due to strategic investor influence, governance complexity, or alternative liquidity solutions (e.g., selective secondary sales or a partial sale to a corporate partner).
Worst case
Anthropic IPOs first (or OpenAI never IPOs before 2040): Anthropic pursues and completes an IPO in the 2020s/2030s while OpenAI remains private due to strategic alignment with Microsoft, governance choices, regulatory constraints, or gets folded into a larger corporate structure — resulting in OpenAI never being the first public among the two.
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