Chart and changes show stored historical probabilities, not the selected live book.
Trends
Selected row: book midpoint. Other rows: stored references, possibly normalized; 24h changes use stored history.
Venue terms
Source: Polymarket
Informational venue terms only; CoinRithm paper trading uses its own rules.
Market depth · Google
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Related Markets
Related questions for context, not a comparison of equivalent contracts.
Which company has the best AI model end of November?
Which company has best AI model end of 2026?
Which company has the best Code Arena WebDev AI model end of December?
Which company has the best Text Arena Math AI model end of December?
Which company has the best AI model on LiveBench (Coding) end of November?
Which company will have the best AI model at the end of 2026?
Rules
This market will resolve according to the company which owns the model which has the highest arena rank based on the arena.ai Text Arena (Overall) when the table under the "Leaderboard" tab is checked on December 15, 2026, 12:00 PM ET.
Free JSON for this market, no API key needed:
https://api.coinrithm.com/api/prediction-markets/events/polymarket/which-company-has-the-best-ai-model-on-december-15-2026AI agents: call pm_data_event on the CoinRithm MCP server:
https://mcp.coinrithm.com/mcp+77 more outcomes
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