Will OpenAI or Anthropic IPO first?
Anthropic is significantly more likely to IPO first, with a confidential SEC filing dated June 1, 2026, and a targeted October 2026 debut, while OpenAI filed a week later and is increasingly leaning toward a 2027 delay due to market conditions and revenue concerns.
Analysis
Anthropic has established a clear lead in the IPO race by confidentially filing its S-1 with the SEC on June 1, 2026, one week before OpenAI's June 8 filing, and is actively targeting an October 2026 Nasdaq debut. Multiple credible sources confirm Anthropic is maintaining this aggressive timeline to secure the first public listing among major AI firms, with investor meetings already lined up for a potential Q4 2026 debut. In contrast, OpenAI's CFO Sarah Friar has explicitly flagged that the company is not yet prepared for public trading and is leaning toward postponing its IPO from late 2026 into 2027 due to consumer market losses and liquidity concerns.
The market currently prices the 'Yes' outcome at 83%, which aligns with the general consensus but appears slightly underpriced given the concrete evidence of Anthropic's filing date advantage and OpenAI's explicit delay signals. The 5% gap between the market price and my independent assessment reflects the high certainty that OpenAI will not reverse its 2027 stance before Anthropic executes its October target. Unless Anthropic faces a sudden regulatory halt or strategic pivot, the timeline disparity makes an Anthropic-first IPO the dominant scenario.
Key valuation dynamics also support Anthropic's urgency, as the company reached a $965 billion valuation in May 2026 and is targeting a $1.1–$1.25 trillion IPO valuation to capitalize on current market enthusiasm before risk appetite potentially declines. OpenAI, while targeting a $1 trillion+ valuation, has not confirmed a date and faces ongoing legal disputes with Elon Musk that further complicate its 2026 timeline. The combination of Anthropic's earlier filing, confirmed October target, and OpenAI's documented hesitation creates a high-probability path for Anthropic to go public first.
Arguments
For
- Anthropic filed confidential IPO paperwork on June 1, 2026, edging ahead of OpenAI's June 8 filing
- Multiple reports confirm Anthropic is still actively targeting an October 2026 debut on Nasdaq
- OpenAI's CFO has explicitly flagged 2027 as a likely window, signaling a delay from late 2026
- Anthropic's $965 billion valuation and $1.1–$1.25 trillion IPO target create urgency to capitalize before market shifts
Against
- Anthropic has not announced a firm pricing date, and timing could change if market volatility increases
- OpenAI could reverse its postponement stance if it achieves unexpected revenue growth or secures critical liquidity
- SEC review process for mega-IPOs could extend beyond the typical 15-day quiet period, delaying both companies
- Declining risk appetite in late 2026 could force Anthropic to postpone its October target
Key drivers
- Anthropic's confidential SEC filing on June 1, 2026, one week ahead of OpenAI
- Anthropic's confirmed target of an October 2026 Nasdaq debut
- OpenAI CFO Sarah Friar's explicit indication of a likely 2027 IPO delay
- OpenAI's reported consumer market losses and liquidity concerns driving postponement
Risk factors
- Anthropic's board may delay the October 2026 target if market conditions worsen
- SEC regulatory review could extend the timeline beyond October 2026 for either company
- OpenAI could unexpectedly accelerate its timeline if it secures a major new funding round or revenue breakthrough
- Legal disputes between OpenAI and Elon Musk could create unforeseen delays or accelerate OpenAI's need to go public
Scenarios
Best case
Anthropic executes its October 2026 IPO without regulatory delays, listing on Nasdaq at a $1.1+ trillion valuation while OpenAI remains private into 2027.
Most likely
Anthropic lists on Nasdaq in October 2026 as targeted, while OpenAI postpones its IPO to the first half of 2027 due to revenue concerns and liquidity issues.
Worst case
Anthropic's board delays the October 2026 target due to worsening market conditions, and OpenAI accelerates its timeline to late 2026, resulting in OpenAI IPOing first.
More from this day
- pop culturePolymarket3mo
Will Jesus Christ return before 2027?
AI98%MKT2%Edge+96Hidden GemThe market will resolve to No with overwhelming certainty, as there is no credible, consensus-reported evidence of the Second Coming occurring in 2026, and theological consensus explicitly rejects date-setting for this event.
- PoliticsKalshi1y
2026: Trump's bad year?
AI78%MKT9%Edge+69Hidden GemThe bear case for Trump is actively materializing in 2026 through major Supreme Court defeats on tariffs, scathing judicial rebukes of his litigation tactics, and legally contested massive monument rollbacks, making the 'Yes' outcome highly probable despite the market's 9% pricing.
- PoliticsKalshi2y
Which agencies will Trump eliminate?
AI94%MKT29%Edge+65Hidden GemUSAID has already been effectively eliminated as an independent agency in 2025, with its functions folded into the State Department and operations ceased by July 1, 2025, making the 'Yes' outcome virtually certain despite its nominal legal existence.