Trader consensus on Polymarket assigns OpenAI a 29% implied probability of topping the LMSYS Chatbot Arena leaderboard by June 30, 2026, driven by its recent GPT-5.4 release in early March that narrowed the gap to leaders despite not yet claiming #1. Google's Gemini 3.1 Pro holds a slim edge at around 1505 Elo as of late March, with Anthropic's Claude Opus 4.6 close behind at 1503, reflecting intense competition from a March frenzy of 12+ model launches including xAI's Grok 4.20 and DeepSeek V3.2. Traders favor OpenAI's historical dominance and iteration speed amid no confirmed Q2 releases, though surprises like Meta's delayed Llama successor or Chinese models like Alibaba's Qwen 3.5 could shift dynamics before resolution.
Experimental AI-generated summary referencing Polymarket data · Updated$1,398,386 Vol.

OpenAI
30%

xAI
12%

Mistral
8%

DeepSeek
7%

Meta
7%

Z.ai
5%

Alibaba
10%

Baidu
4%

Nvidia
4%

Meituan
3%
$1,398,386 Vol.

OpenAI
30%

xAI
12%

Mistral
8%

DeepSeek
7%

Meta
7%

Z.ai
5%

Alibaba
10%

Baidu
4%

Nvidia
4%

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...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.
Resolver
0x65070BE91...Trader consensus on Polymarket assigns OpenAI a 29% implied probability of topping the LMSYS Chatbot Arena leaderboard by June 30, 2026, driven by its recent GPT-5.4 release in early March that narrowed the gap to leaders despite not yet claiming #1. Google's Gemini 3.1 Pro holds a slim edge at around 1505 Elo as of late March, with Anthropic's Claude Opus 4.6 close behind at 1503, reflecting intense competition from a March frenzy of 12+ model launches including xAI's Grok 4.20 and DeepSeek V3.2. Traders favor OpenAI's historical dominance and iteration speed amid no confirmed Q2 releases, though surprises like Meta's delayed Llama successor or Chinese models like Alibaba's Qwen 3.5 could shift dynamics before resolution.
Experimental AI-generated summary referencing Polymarket data · Updated
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