Anthropic's Claude Opus 5 variants currently dominate the Code Arena WebDev leaderboard on arena.ai, securing the top three spots with scores above 1670 through strong results in agentic front-end coding workflows that demand multi-step reasoning and tool use. Recent releases of these models in early August drove the surge, widening the gap over competitors like Moonshot's Kimi K3 and OpenAI's GPT-5.6 series, which trail significantly. With the market resolving at the end of August, trader consensus reflects Anthropic's sustained edge in demonstrated coding benchmarks, though new model drops from rivals could still influence final standings.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedAnthropic 86%
OpenAI 5.9%
Alibaba 5.5%
Moonshot 3.7%
$42,932 Vol.
$42,932 Vol.

Anthropic
86%

OpenAI
6%

Alibaba
6%

Moonshot
4%

3%

Z.ai
1%

SpaceXAI
1%

DeepSeek
<1%

Meta
<1%

ByteDance
<1%

MiniMax
<1%

Xiaomi
<1%

Thinky
<1%

Tencent
<1%

Poolside
<1%

Mistral
<1%
Anthropic 86%
OpenAI 5.9%
Alibaba 5.5%
Moonshot 3.7%
$42,932 Vol.
$42,932 Vol.

Anthropic
86%

OpenAI
6%

Alibaba
6%

Moonshot
4%

3%

Z.ai
1%

SpaceXAI
1%

DeepSeek
<1%

Meta
<1%

ByteDance
<1%

MiniMax
<1%

Xiaomi
<1%

Thinky
<1%

Tencent
<1%

Poolside
<1%

Mistral
<1%
Results from the "Rank" column under the "Code Arena | WebDev" Leaderboard tab at https://arena.ai/leaderboard/code/webdev (Overall) filtered for "Models" 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 which model is listed higher on the leaderboard. If a tie still remains, alphabetical order of company names as listed in this market group will be used as a final tiebreaker (e.g., “Google” would be ranked ahead of “SpaceXAI”). This market will resolve based on the company that occupies first place under this ranking.
The resolution source for this market is the arena.ai Code Arena | WebDev Leaderboard. If this resolution source is unavailable at check time, this market will remain open until the leaderboard comes back online and will resolve based on the first check after it becomes available. If it becomes permanently unavailable, this market will resolve to "Other".
Market Opened: Jul 16, 2026, 10:56 PM ET
Resolution Source
https://arena.ai/leaderboard/code/webdevResolver
0x69c47De9D...Results from the "Rank" column under the "Code Arena | WebDev" Leaderboard tab at https://arena.ai/leaderboard/code/webdev (Overall) filtered for "Models" 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 which model is listed higher on the leaderboard. If a tie still remains, alphabetical order of company names as listed in this market group will be used as a final tiebreaker (e.g., “Google” would be ranked ahead of “SpaceXAI”). This market will resolve based on the company that occupies first place under this ranking.
The resolution source for this market is the arena.ai Code Arena | WebDev Leaderboard. If this resolution source is unavailable at check time, this market will remain open until the leaderboard comes back online and will resolve based on the first check after it becomes available. If it becomes permanently unavailable, this market will resolve to "Other".
Resolution Source
https://arena.ai/leaderboard/code/webdevResolver
0x69c47De9D...Anthropic's Claude Opus 5 variants currently dominate the Code Arena WebDev leaderboard on arena.ai, securing the top three spots with scores above 1670 through strong results in agentic front-end coding workflows that demand multi-step reasoning and tool use. Recent releases of these models in early August drove the surge, widening the gap over competitors like Moonshot's Kimi K3 and OpenAI's GPT-5.6 series, which trail significantly. With the market resolving at the end of August, trader consensus reflects Anthropic's sustained edge in demonstrated coding benchmarks, though new model drops from rivals could still influence final standings.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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