Introduction

After a wave of anticipation at the start of 2026, the initial public offering landscape has shifted dramatically for major AI players. What began as a promising year for tech listings now hinges on a single company.

What Happened

Prediction market platform Kalshi now assigns Anthropic a 75% probability of announcing an IPO before year-end, making it the only major AI startup still in the running. OpenAI CEO Sam Altman has explicitly ruled out a 2026 debut, while other once-expected contenders have seen their odds plummet. SpaceX completed its public offering in June, but the broader pipeline has narrowed significantly. Anthropic confidentially submitted its S-1 filing in early June, and despite broader market momentum, the number of U.S. IPOs priced through October is down 33% compared with 2025.

Why This Matters

Investors have long viewed the transition from private to public markets as a key step for scaling AI companies. A public listing provides access to broader capital, increases visibility, and offers liquidity to early stakeholders. However, Anthropic's recent quarterly results—$16.8 billion in revenue for Q3—showed slower growth than prior periods, prompting analysts to revise valuation expectations from a minimum of $2 trillion down to $1.5 trillion. The deceleration has sparked debate over whether the AI sector can sustain the momentum needed to justify large-scale public offerings.

Key Takeaways

  • Anthropic is the only major AI company with greater than 50% odds of a 2026 IPO on Kalshi.
  • OpenAI, Anthropic's chief rival, has been ruled out for 2026 by its CEO.
  • U.S. IPO volume is down 33% year-over-year, despite higher proceeds from mega-cap debuts.
  • Other formerly expected entrants—Plaid, Deel, Databricks—have seen their odds drop to single digits.
  • Anthropic's revenue growth deceleration and revised valuation range underscore the sector's current headwinds.

Conclusion

The AI IPO race for 2026 is effectively down to one name, but the broader trend reveals a more cautious market environment. As Anthropic moves toward a potential public debut, investors and analysts will be watching closely how the company addresses growth concerns and whether the revised valuation trajectory holds. For the rest of the tech sector, the shrinking IPO pipeline signals a more selective approach to going public in the near term.