TOTAL VOLUME:
$134.1b
24H VOL:
$133,388,117
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,436,095,462
405,232
Markets across
30,526
events
MATCHED EVENTS:
2,693
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: May 30, 8:00 PM EST
Polymarket
This market tracks which company will own the second-ranked AI model according to the Chatbot Arena LLM Leaderboard. On Polymarket, Anthropic holds 99.3% probability of holding the second-best position, while OpenAI stands at 0.5%. The resolution will be determined by checking the Text Arena Overall Leaderboard rankings at https://lmarena.ai/ on May 31, 2026, at 12:00 PM ET, with ties broken by Arena score and then alphabetical order of company names. Watch the Chatbot Arena rankings as May 31, 2026 approaches to see which models climb or fall in the standings.
Prediction market odds on Polymarket reflect real-money trader conviction and often diverge from traditional analyst forecasts. While analysts may rely on published benchmarks, research papers, and expert opinion, prediction markets incorporate forward-looking sentiment from participants with financial stakes in the outcome. Comparing market odds to analyst reports and industry surveys reveals where traders see gaps in consensus. This event's active trading volume suggests strong market interest in AI model rankings, potentially signaling trader confidence in specific outcomes that may differ from published expert assessments.
The market resolves on May 31, 2026. Resolution hinges on determining which company holds the second-best AI model at that specific moment. This requires evaluating available models against established benchmarks, performance metrics, and industry consensus at the time. The outcome depends on which AI systems are publicly available, their demonstrated capabilities, and how they rank relative to competitors. Factors include model release dates, published evaluation results, and recognized performance standards in the AI research community as of the resolution date.
Major AI model releases or announcements from leading companies could significantly shift market odds. Benchmark results, academic papers demonstrating new capabilities, and public evaluations of model performance will influence trader expectations. Competitive developments such as partnerships, funding announcements, or strategic pivots by AI companies may alter perceived rankings. Regulatory changes affecting AI development or deployment could impact which models are considered viable contenders. Media coverage of AI breakthroughs and industry commentary on relative model quality will also drive trading activity and price movements toward resolution.