Trader consensus on Polymarket overwhelmingly favors Anthropic as having the second-best AI model by March 31, 2026, with Claude Opus 4.6 securing a commanding runner-up position on the LMSYS Chatbot Arena leaderboard at 1503 Elo—trailing only Gemini 3.1 Pro's 1505 while far ahead of rivals like OpenAI's GPT-5.4, xAI's Grok-4.20, and Chinese contenders such as DeepSeek or Alibaba's Qwen. This positioning stems from Anthropic's recent Claude 4.6 release in early March, which demonstrated superior reasoning, coding, and multimodal benchmarks amid a flurry of 12 new large language models that month, solidifying its competitive edge through crowdsourced battles and verified evaluations. With the market resolving imminently, only an improbable last-minute leaderboard refresh or surprise model drop from Google or OpenAI could challenge this near-certain outcome, though traders see negligible risk given stable rankings over the past week.
Experimental AI-generated summary referencing Polymarket data · UpdatedAnthropic 100.0%
Alibaba <1%
DeepSeek <1%
Google <1%
$1,392,610 Vol.
$1,392,610 Vol.

Alibaba
No

DeepSeek
No

No

Baidu
No

Moonshot
No

Anthropic
Yes

Z.ai
No

Mistral
No

OpenAI
No

xAI
No

Meituan
No
Anthropic 100.0%
Alibaba <1%
DeepSeek <1%
Google <1%
$1,392,610 Vol.
$1,392,610 Vol.

Alibaba
No

DeepSeek
No

No

Baidu
No

Moonshot
No

Anthropic
Yes

Z.ai
No

Mistral
No

OpenAI
No

xAI
No

Meituan
No
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...Outcome proposed: No
No dispute
Final outcome: No
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.
Resolver
0x2F5e3684c...Outcome proposed: No
No dispute
Final outcome: No
Trader consensus on Polymarket overwhelmingly favors Anthropic as having the second-best AI model by March 31, 2026, with Claude Opus 4.6 securing a commanding runner-up position on the LMSYS Chatbot Arena leaderboard at 1503 Elo—trailing only Gemini 3.1 Pro's 1505 while far ahead of rivals like OpenAI's GPT-5.4, xAI's Grok-4.20, and Chinese contenders such as DeepSeek or Alibaba's Qwen. This positioning stems from Anthropic's recent Claude 4.6 release in early March, which demonstrated superior reasoning, coding, and multimodal benchmarks amid a flurry of 12 new large language models that month, solidifying its competitive edge through crowdsourced battles and verified evaluations. With the market resolving imminently, only an improbable last-minute leaderboard refresh or surprise model drop from Google or OpenAI could challenge this near-certain outcome, though traders see negligible risk given stable rankings over the past week.
Experimental AI-generated summary referencing Polymarket data · Updated
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Beware of external links.
Frequently Asked Questions