OpenAI, Anthropic IPO Race

The race for a public debut between AI heavyweights OpenAI and Anthropic is drawing significant attention on prediction markets. Currently, markets suggest Anthropic has a slight edge, with 87.0% odds of IPOing before OpenAI. This reflects a substantial investor interest in the future of these leading generative AI companies.

The Kalshi, All Markets platform shows a combined volume of $7.8 million across various prediction markets. In the AI and Tech sector, the question of which AI powerhouse will go public first dominates, with substantial trading volume. The odds for Anthropic to IPO first stand at 87.0% (1.1x return), while OpenAI has 19.0% odds (5.3x return), indicating a strong market sentiment.

AI & Tech

Beyond the OpenAI and Anthropic IPO dynamic, other AI and tech-related predictions are also seeing action. Markets are assessing when nuclear fusion might be achieved, with various timelines showing different levels of investor confidence. The possibility of SpaceX or Blue Origin landing on the Moon, or even humans landing on Mars, are also active prediction markets.

The question of whether a humanoid robot will walk on Mars before a human does before 2035 is also being traded, highlighting speculative interest in the pace of space exploration. The volume in these markets, while lower than the IPO race, indicates a keen interest in future technological milestones.

War & Geopolitics

In War & Geopolitics, a prominent market speculates on Elon Musk's lifetime Mars visit. While seemingly futuristic, the question of AI advancement and its potential impact is often intertwined with such grand technological visions. The market currently gives an 88.0% chance that Musk will not visit Mars before 2099.

Predictions surrounding the succession of Benjamin Netanyahu as Israel's Prime Minister also show activity, with various political figures being traded. Markets are also focused on environmental targets, specifically CO2 atmospheric concentration levels before 2030.

The overall trading volume across all markets underscores a broad speculative appetite for future events, from technological breakthroughs to geopolitical shifts.

IPO Race Update: July 2026

Last updated: July 2026

The race has sharpened considerably since this article was first published. Anthropic filed its S-1 confidentially with the SEC on June 1, 2026; OpenAI followed on June 8. Anthropic is now organizing investor roadshow meetings targeting an October 2026 Nasdaq listing, while OpenAI's timeline has slipped and is widely expected to extend into 2027. Anthropic's valuation reached approximately $965 billion in its May 2026 funding round, surpassing OpenAI's post-restructuring valuation of roughly $85 billion. Annual revenue has grown from a $9 billion run rate in January 2026 to $47 billion by May -- roughly 5x growth in five months -- giving institutional investors a clear profitable thesis. (Sources: CNBC, 247 Wall St., Polymarket.)

What Users on Reddit Are Saying

Across 4 threads analyzed, Reddit sentiment on OpenAI runs mixed-to-negative, capturing the tension between real growth and long-term moat concerns:

"No, OpenAI is not doomed... Revenue grew 3.5x in a single year, that's crazy for any company." -- r/codex, July 2026

"I don't think OpenAI and Anthropic will survive long term. After studying how Dropbox rose but still lost market dominance the parallels with AI are the same." -- r/AI_Agents, June 2026

The debate reflects broader uncertainty: both companies are growing at extraordinary rates, but commodity AI model pricing is compressing margins faster than anyone predicted.

Frequently Asked Questions

Which company is more likely to IPO first -- Anthropic or OpenAI?

Prediction markets strongly favor Anthropic, with Polymarket showing approximately 87% odds of Anthropic IPOing before OpenAI as of July 2026. Anthropic filed its S-1 on June 1 and is targeting an October 2026 listing; OpenAI filed June 8 but is not expected to list until 2027.

What is Anthropic's current valuation heading into its IPO?

Anthropic's May 2026 Series H-1 funding round valued the company at approximately $965 billion. The company projects profitability by 2028 and has Goldman Sachs, JPMorgan, and Morgan Stanley as lead underwriters.

When is OpenAI's IPO expected?

OpenAI confidentially filed for an IPO on June 8, 2026, one week after Anthropic. The company's timeline is broadly expected to extend into 2027, based on leadership comments that the listing timing may be some time away.

Why does Anthropic have better IPO odds than OpenAI on prediction markets?

Anthropic filed first, has a clearer path to profitability (2028 target vs. OpenAI's 2030), and is further along in its roadshow process. Its explosive revenue growth -- $9B annualized in January to $47B by May 2026 -- has attracted strong institutional interest ahead of the October listing window.