Anthropic leads Code Arena WebDev market-implied odds at 63.5% because its Claude Opus 5 variants currently top the arena.ai leaderboard with the highest Elo scores in agentic frontend and full-stack web development tasks, including multi-step reasoning, tool use, and iterative app building evaluated via thousands of blind human votes. Recent August 2026 updates show these models outperforming competitors on Pareto frontiers for raw capability, while the gap with strong open-weight entries from Moonshot (Kimi K3), Alibaba (Qwen), and Z.ai (GLM) has narrowed sharply on cost-adjusted metrics. Traders view Anthropic's edge as durable through September absent major releases, though rapid iteration among Chinese labs and OpenAI's GPT-5.6 family creates ongoing uncertainty in this dynamic coding benchmark.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedAnthropic 63%
Moonshot 21.7%
Alibaba 5.5%
OpenAI 5.2%
$57,886 Vol.
$57,886 Vol.
Sep 30, 2026
Anthropic
63%
Moonshot
22%
Alibaba
6%
OpenAI
5%
Z.ai
4%
Meta
3%
2%
SpaceXAI
1%
DeepSeek
1%
ByteDance
<1%
MiniMax
<1%
Xiaomi
<1%
Thinky
<1%
Tencent
<1%
Poolside
<1%
Mistral
<1%
Anthropic 63%
Moonshot 21.7%
Alibaba 5.5%
OpenAI 5.2%
$57,886 Vol.
$57,886 Vol.
Sep 30, 2026
Anthropic
$27,644 Vol.
63%
Moonshot
$14,115 Vol.
22%
Alibaba
$1,553 Vol.
6%
OpenAI
$3,755 Vol.
5%
Z.ai
$1,544 Vol.
4%
Meta
$1,251 Vol.
3%
$1,551 Vol.
2%
SpaceXAI
$1,125 Vol.
1%
DeepSeek
$1,104 Vol.
1%
ByteDance
$468 Vol.
<1%
MiniMax
$559 Vol.
<1%
Xiaomi
$657 Vol.
<1%
Thinky
$560 Vol.
<1%
Tencent
$571 Vol.
<1%
Poolside
$641 Vol.
<1%
Mistral
$789 Vol.
<1%
This market will resolve according to the company that owns the model that has the highest rank based on the arena.ai Code Arena | WebDev Leaderboard when the table under "Code Arena | WebDev" filtered for "Models" is checked on September 30, 2026, 12:00 PM ET.
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".Anthropic leads Code Arena WebDev market-implied odds at 63.5% because its Claude Opus 5 variants currently top the arena.ai leaderboard with the highest Elo scores in agentic frontend and full-stack web development tasks, including multi-step reasoning, tool use, and iterative app building evaluated via thousands of blind human votes. Recent August 2026 updates show these models outperforming competitors on Pareto frontiers for raw capability, while the gap with strong open-weight entries from Moonshot (Kimi K3), Alibaba (Qwen), and Z.ai (GLM) has narrowed sharply on cost-adjusted metrics. Traders view Anthropic's edge as durable through September absent major releases, though rapid iteration among Chinese labs and OpenAI's GPT-5.6 family creates ongoing uncertainty in this dynamic coding benchmark.
This market will resolve according to the company that owns the model that has the highest rank based on the arena.ai Code Arena | WebDev Leaderboard when the table under "Code Arena | WebDev" filtered for "Models" is checked on September 30, 2026, 12:00 PM ET.
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".
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 20, 2026, 7:23 PM ET
Volume
$57,886End Date
Oct 1, 2026Market Opened
Jul 20, 2026, 7:23 PM ETResolution Source
https://arena.ai/leaderboard/code/webdevResolver
0x69c47De9D...This market will resolve according to the company that owns the model that has the highest rank based on the arena.ai Code Arena | WebDev Leaderboard when the table under "Code Arena | WebDev" filtered for "Models" is checked on September 30, 2026, 12:00 PM ET.
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".Anthropic leads Code Arena WebDev market-implied odds at 63.5% because its Claude Opus 5 variants currently top the arena.ai leaderboard with the highest Elo scores in agentic frontend and full-stack web development tasks, including multi-step reasoning, tool use, and iterative app building evaluated via thousands of blind human votes. Recent August 2026 updates show these models outperforming competitors on Pareto frontiers for raw capability, while the gap with strong open-weight entries from Moonshot (Kimi K3), Alibaba (Qwen), and Z.ai (GLM) has narrowed sharply on cost-adjusted metrics. Traders view Anthropic's edge as durable through September absent major releases, though rapid iteration among Chinese labs and OpenAI's GPT-5.6 family creates ongoing uncertainty in this dynamic coding benchmark.
This market will resolve according to the company that owns the model that has the highest rank based on the arena.ai Code Arena | WebDev Leaderboard when the table under "Code Arena | WebDev" filtered for "Models" is checked on September 30, 2026, 12:00 PM ET.
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".
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".
Volume
$57,886End Date
Oct 1, 2026Market Opened
Jul 20, 2026, 7:23 PM ETResolution Source
https://arena.ai/leaderboard/code/webdevResolver
0x69c47De9D...Anthropic leads Code Arena WebDev market-implied odds at 63.5% because its Claude Opus 5 variants currently top the arena.ai leaderboard with the highest Elo scores in agentic frontend and full-stack web development tasks, including multi-step reasoning, tool use, and iterative app building evaluated via thousands of blind human votes. Recent August 2026 updates show these models outperforming competitors on Pareto frontiers for raw capability, while the gap with strong open-weight entries from Moonshot (Kimi K3), Alibaba (Qwen), and Z.ai (GLM) has narrowed sharply on cost-adjusted metrics. Traders view Anthropic's edge as durable through September absent major releases, though rapid iteration among Chinese labs and OpenAI's GPT-5.6 family creates ongoing uncertainty in this dynamic coding benchmark.
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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