Will OpenAI have the best AI model at the end of December 2026?

Resolution

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1. 1
   Version 1, currentsince I first saw it, 22 h ago
   Read the current rules

   Question

   Will OpenAI have the best AI model at the end of December 2026?

   Rules

   This market will resolve according to the company which owns the model which has the highest arena rank based off the Chatbot Arena LLM Leaderboard (https://lmarena.ai/) when the table under the "Leaderboard" tab is checked on December 31, 2026, 12:00 PM ET.

   Results from the "Rank" section on the Leaderboard tab of https://lmarena.ai/leaderboard/text with the style control off will be used to resolve this market.

   Models will be ordered primarily by their leaderboard rank at the market’s check time. If two or more models are tied on rank, they will be ordered by their Arena score, including any underlying, unrounded, granular values reflected in the data below the leaderboard. If a tie remains, alphabetical order of company names as listed in this market group will be used as a final tiebreaker (e.g., if the two models are tied by exact arena score, “Google” would be ranked ahead of “xAI”). This market will resolve based on the company that occupies first place under this ranking system.

   The resolution source for this market is the Chatbot Arena LLM Leaderboard found at https://lmarena.ai/. If this resolution source is unavailable at check time, this market will remain open until the leaderboard comes back online and resolve based on the first check after it becomes available. If it becomes permanently unavailable, this market will resolve based on another resolution source.

   Resolution source

   https://lmarena.ai/

   End date

   Dec 31, 2026, 17:00 UTC

2. 1
   First recordedOct 31, 2026, 09:06 UTC

   Saved in my first snapshot of every open market. Neither venue keeps older versions, so nothing before this exists.