Will OpenAI or Anthropic IPO first?
OpenAI still looks more likely to reach the public markets first, but the edge is narrower than the market is pricing. I would put the probability at 64%, mainly because OpenAI has the stronger formal IPO signal while Anthropic’s timing looks comparably close if OpenAI slips further.
Analysis
OpenAI has the clearest evidence of active IPO preparation, including a confidential filing in June 2026, which is a meaningful signal that it is trying to preserve an earlier listing path. On the face of the current reporting, that makes OpenAI the most likely first mover, especially because Anthropic’s signals are less definitive and remain more narrative-driven than execution-driven. In a normal environment, a company that has already filed would usually be favored to list first unless something interrupts the process.
The main reason I would not push the probability much higher is that the timing gap appears fragile. Multiple reports now suggest OpenAI may delay into 2027, and once that becomes a real possibility, Anthropic’s reported late-2026 window starts to look competitive or even ahead. Confidential filings are only the beginning of a process that can be slowed by SEC review, internal restructuring, governance issues, or simply unfavorable market conditions, and this is especially true for highly scrutinized AI companies.
The market at 80% looks somewhat too confident in an OpenAI-first outcome. That level implies a fairly clean execution path for OpenAI and a meaningful probability that Anthropic misses its own late-2026 window, but the recent reporting does not justify that much conviction. My view is that OpenAI still leads, yet the combination of delay risk and Anthropic’s own reported preparations makes this closer to a two-thirds call than a near-certain one.
Arguments
For
- Arguments for Yes: OpenAI’s confidential filing is a stronger and more concrete IPO signal than Anthropic’s current public reporting.
- Arguments for Yes: OpenAI still has the broader strategic urgency and market profile that could motivate management to list before competitors.
Against
- Arguments against Yes: OpenAI’s own reported timetable has shifted later, which weakens the advantage of being first to file.
- Arguments against Yes: Anthropic’s reported late-2026 target is close enough that a modest OpenAI delay could flip the ordering.
Key drivers
- OpenAI has already taken the concrete step of a confidential IPO filing, which is the strongest direct indicator of near-term listing intent.
- OpenAI’s growing delay risk into 2027 materially narrows the timing advantage over Anthropic.
Risk factors
- Anthropic could move faster than expected if its reported late-2026 path holds and OpenAI stalls on execution or market conditions.
- Any deterioration in equity markets or AI-sector sentiment could push both companies back, making relative timing hard to predict from filings alone.
Scenarios
Best case
OpenAI moves smoothly through SEC review, market conditions improve, and it lists in late 2026 before Anthropic can complete its own process.
Most likely
OpenAI remains the likeliest first IPO because it has the clearest formal preparation underway, but the margin over Anthropic is modest rather than overwhelming.
Worst case
OpenAI delays into 2027 or later while Anthropic completes a late-2026 IPO, causing Anthropic to go public first.
More from this day
- CompaniesKalshi1y
Starbucks total global stores in 2026
AI83%MKT9%Edge+74Hidden GemStarbucks looks materially more likely than not to finish 2026 above 41,800 global stores. The company’s own Q3 count and FY2026 store-growth guidance both point to a comfortable cushion above the threshold.
- politicsPolymarket3mo
Will the U.S. invade Iran before 2027?
AI78%MKT26%Edge+52Hidden GemThe evidence strongly suggests the United States has already carried out direct military action against Iran in 2026, so the market is leaning toward Yes if the resolution standard is broad. The main reason this is not near-certain is that the contract language is narrower than ordinary usage and may require a true territorial-control invasion rather than airstrikes alone.
- pop culturePolymarketEnded
"The Odyssey" 3rd Weekend Box Office
AI57%MKT6%Edge+51Hidden GemRecent tracking has the film around 45 million for the third weekend, which would clear the under-47 million threshold if it holds. The market is heavily priced toward No, but the public estimates leave Yes meaningfully live.