Trader sentiment on Polymarket heavily favors OpenAI at 44% implied probability to claim the #1 spot on the LMSYS Chatbot Arena Elo leaderboard by June 30, driven by expectations of rapid iterations on its o1-preview series amid fierce competition. Anthropic's Claude 3.5 Sonnet, released June 20, surged to the top with a 1285 Elo score, overtaking GPT-4o and briefly flipping odds, but traders discount its staying power given historical leaderboard volatility from quick counter-releases. Google DeepMind sits at 26% with Gemini 1.5 Pro Experimental close behind at 1281 Elo, while xAI's anticipated Grok-2 beta looms as a wildcard. Key watch: OpenAI updates or Google advancements before quarter-end, as single-day Elo snapshots resolve the market.
Experimental AI-generated summary referencing Polymarket data · Updated$1,148,424 Vol.

OpenAI
28%

xAI
12%

DeepSeek
8%

Z.ai
7%

Alibaba
5%

Meta
5%

Baidu
4%

Nvidia
3%

Mistral
3%

Meituan
3%
$1,148,424 Vol.

OpenAI
28%

xAI
12%

DeepSeek
8%

Z.ai
7%

Alibaba
5%

Meta
5%

Baidu
4%

Nvidia
3%

Mistral
3%

Meituan
3%
Results from the "Arena Score" section on the Leaderboard tab of https://lmarena.ai/ with the style control unchecked will be used to resolve this market.
If a listed model ties for #1 Arena score, it will suffice to resolve this market to "Yes."
The resolution source for this market is the Chatbot Arena LLM Leaderboard found at https://lmarena.ai/. If this resolution source becomes unavailable, the market will remain open until it is accessible again. If it becomes permanently unavailable, resolution will be based on another credible source.
Market Opened: Dec 22, 2025, 5:28 PM ET
Resolver
0x65070BE91...Resolver
0x65070BE91...Trader sentiment on Polymarket heavily favors OpenAI at 44% implied probability to claim the #1 spot on the LMSYS Chatbot Arena Elo leaderboard by June 30, driven by expectations of rapid iterations on its o1-preview series amid fierce competition. Anthropic's Claude 3.5 Sonnet, released June 20, surged to the top with a 1285 Elo score, overtaking GPT-4o and briefly flipping odds, but traders discount its staying power given historical leaderboard volatility from quick counter-releases. Google DeepMind sits at 26% with Gemini 1.5 Pro Experimental close behind at 1281 Elo, while xAI's anticipated Grok-2 beta looms as a wildcard. Key watch: OpenAI updates or Google advancements before quarter-end, as single-day Elo snapshots resolve the market.
Experimental AI-generated summary referencing Polymarket data · Updated



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