Anthropic's Claude 3 Opus release on March 4 drives its dominant 93.5% market-implied probability for the second-best AI model by March end, as it consistently ranks just behind OpenAI's GPT-4 variants on the LMSYS Chatbot Arena leaderboard—excelling in coding (HumanEval 84.9%), math (GPQA 59.4%), and vision benchmarks per official evals. Backed by AWS and Google investments, Opus's multimodal capabilities and 200K-token context solidify trader consensus amid slipping timelines for rivals. Realistic challenges include Google's Gemini 1.5 Pro climbing via long-context tests or xAI's Grok-1.5 (launched March 28) leveraging real-time X data, though these face steep odds below 5% without leaderboard shifts before resolution.
Experimental AI-generated summary referencing Polymarket data · UpdatedAnthropic 94%
Google 3.7%
xAI <1%
OpenAI <1%
$408,825 Vol.
$408,825 Vol.

Anthropic
94%

4%

xAI
1%

OpenAI
1%

DeepSeek
<1%

Z.ai
<1%

Alibaba
<1%

Baidu
<1%

Moonshot
<1%

Mistral
<1%

Meituan
<1%
Anthropic 94%
Google 3.7%
xAI <1%
OpenAI <1%
$408,825 Vol.
$408,825 Vol.

Anthropic
94%

4%

xAI
1%

OpenAI
1%

DeepSeek
<1%

Z.ai
<1%

Alibaba
<1%

Baidu
<1%

Moonshot
<1%

Mistral
<1%

Meituan
<1%
Results from the "Arena Score" section on the Leaderboard tab of https://lmarena.ai/leaderboard/text with the style control off will be used to resolve this market.
If two models are tied for the second best arena score at this market's check time, resolution will be based on whichever company's name, as it is described in this market group, comes first in alphabetical order (e.g. if both were tied, "Google" would resolve to "Yes", and "xAI" would resolve to "No")
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.
Market Opened: Dec 2, 2025, 6:02 PM ET
Resolver
0x2F5e3684c...Resolver
0x2F5e3684c...Anthropic's Claude 3 Opus release on March 4 drives its dominant 93.5% market-implied probability for the second-best AI model by March end, as it consistently ranks just behind OpenAI's GPT-4 variants on the LMSYS Chatbot Arena leaderboard—excelling in coding (HumanEval 84.9%), math (GPQA 59.4%), and vision benchmarks per official evals. Backed by AWS and Google investments, Opus's multimodal capabilities and 200K-token context solidify trader consensus amid slipping timelines for rivals. Realistic challenges include Google's Gemini 1.5 Pro climbing via long-context tests or xAI's Grok-1.5 (launched March 28) leveraging real-time X data, though these face steep odds below 5% without leaderboard shifts before resolution.
Experimental AI-generated summary referencing Polymarket data · Updated


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