Moonshot's kimi-k3 currently tops the Code Arena WebDev leaderboard with the highest Elo rating for agentic front-end coding tasks, driving its 54% market-implied odds ahead of a tightly bunched field. Traders appear to weigh this edge against Mistral's recent Large 3 and Small 4 releases that bundle strong coding and multimodal features at lower cost, plus OpenAI's GPT-5 series updates targeting similar workflows. The many 50% and sub-45% outcomes reflect rapid iteration across labs, where open-weight models from Moonshot and Mistral compete on accessibility while closed systems emphasize benchmark-specific optimizations. Key swing factors through September include new leaderboard submissions, developer adoption metrics, and any major capability jumps in tool use or full-stack web generation.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedAnthropic 80%
OpenAI 11%
Moonshot 3.9%
SpaceXAI 3.5%
$21,443 Vol.
$21,443 Vol.
Sep 30, 2026
Anthropic
80%
OpenAI
11%
Moonshot
4%
SpaceXAI
4%
Alibaba
2%
Z.ai
9%
1%
Meta
1%
DeepSeek
1%
MiniMax
1%
Xiaomi
<1%
Mistral
<1%
Thinky
<1%
Poolside
<1%
ByteDance
<1%
Tencent
<1%
Anthropic 80%
OpenAI 11%
Moonshot 3.9%
SpaceXAI 3.5%
$21,443 Vol.
$21,443 Vol.
Sep 30, 2026
Anthropic
$2,495 Vol.
80%
OpenAI
$1,416 Vol.
11%
Moonshot
$9,947 Vol.
4%
SpaceXAI
$590 Vol.
4%
Alibaba
$539 Vol.
2%
Z.ai
$767 Vol.
9%
$698 Vol.
1%
Meta
$674 Vol.
1%
DeepSeek
$657 Vol.
1%
MiniMax
$480 Vol.
1%
Xiaomi
$542 Vol.
<1%
Mistral
$539 Vol.
<1%
Thinky
$527 Vol.
<1%
Poolside
$557 Vol.
<1%
ByteDance
$468 Vol.
<1%
Tencent
$545 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".Moonshot's kimi-k3 currently tops the Code Arena WebDev leaderboard with the highest Elo rating for agentic front-end coding tasks, driving its 54% market-implied odds ahead of a tightly bunched field. Traders appear to weigh this edge against Mistral's recent Large 3 and Small 4 releases that bundle strong coding and multimodal features at lower cost, plus OpenAI's GPT-5 series updates targeting similar workflows. The many 50% and sub-45% outcomes reflect rapid iteration across labs, where open-weight models from Moonshot and Mistral compete on accessibility while closed systems emphasize benchmark-specific optimizations. Key swing factors through September include new leaderboard submissions, developer adoption metrics, and any major capability jumps in tool use or full-stack web generation.
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
$21,443End Date
Sep 30, 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".Moonshot's kimi-k3 currently tops the Code Arena WebDev leaderboard with the highest Elo rating for agentic front-end coding tasks, driving its 54% market-implied odds ahead of a tightly bunched field. Traders appear to weigh this edge against Mistral's recent Large 3 and Small 4 releases that bundle strong coding and multimodal features at lower cost, plus OpenAI's GPT-5 series updates targeting similar workflows. The many 50% and sub-45% outcomes reflect rapid iteration across labs, where open-weight models from Moonshot and Mistral compete on accessibility while closed systems emphasize benchmark-specific optimizations. Key swing factors through September include new leaderboard submissions, developer adoption metrics, and any major capability jumps in tool use or full-stack web generation.
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
$21,443End Date
Sep 30, 2026Market Opened
Jul 20, 2026, 7:23 PM ETResolution Source
https://arena.ai/leaderboard/code/webdevResolver
0x69c47De9D...Moonshot's kimi-k3 currently tops the Code Arena WebDev leaderboard with the highest Elo rating for agentic front-end coding tasks, driving its 54% market-implied odds ahead of a tightly bunched field. Traders appear to weigh this edge against Mistral's recent Large 3 and Small 4 releases that bundle strong coding and multimodal features at lower cost, plus OpenAI's GPT-5 series updates targeting similar workflows. The many 50% and sub-45% outcomes reflect rapid iteration across labs, where open-weight models from Moonshot and Mistral compete on accessibility while closed systems emphasize benchmark-specific optimizations. Key swing factors through September include new leaderboard submissions, developer adoption metrics, and any major capability jumps in tool use or full-stack web generation.
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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