Traders see Anthropic holding the edge in this Code Arena WebDev market at 40.4% implied probability, followed by OpenAI at 24%, because its Claude models have shown consistent strength on coding benchmarks involving web frameworks, API integrations, and frontend-backend workflows. The broad distribution of odds across Alibaba, Google, and smaller labs reflects rapid iteration cycles where new model releases or fine-tunes can quickly shift relative rankings. Key differentiators include demonstrated agentic coding performance, context-window handling for large codebases, and integration with developer tools. With resolution at end of October, upcoming benchmark updates or public leaderboards could still alter the tight field.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedAnthropic 40.3%
OpenAI 24%
Alibaba 16%
SpaceXAI 7.6%
$14,918 Vol.
$14,918 Vol.
Oct 31, 2026
Anthropic
40%
OpenAI
24%
Alibaba
16%
SpaceXAI
8%
Moonshot
7%
DeepSeek
6%
5%
Poolside
3%
Z.ai
2%
Tencent
2%
Meta
2%
ByteDance
1%
Xiaomi
1%
Thinky
1%
MiniMax
<1%
Mistral
<1%
Anthropic 40.3%
OpenAI 24%
Alibaba 16%
SpaceXAI 7.6%
$14,918 Vol.
$14,918 Vol.
Oct 31, 2026
Anthropic
$2,071 Vol.
40%
OpenAI
$808 Vol.
24%
Alibaba
$1,526 Vol.
16%
SpaceXAI
$425 Vol.
8%
Moonshot
$4,637 Vol.
7%
DeepSeek
$471 Vol.
6%
$505 Vol.
5%
Poolside
$811 Vol.
3%
Z.ai
$479 Vol.
2%
Tencent
$425 Vol.
2%
Meta
$545 Vol.
2%
ByteDance
$501 Vol.
1%
Xiaomi
$251 Vol.
1%
Thinky
$498 Vol.
1%
MiniMax
$331 Vol.
<1%
Mistral
$635 Vol.
<1%
This market will resolve according to the second-highest ranked Company based on the arena.ai Code Arena | WebDev Leaderboard when the table under "Code Arena | WebDev" filtered for "Labs" is checked on October 31, 2026, 12:00 PM ET.
Results from the "Lab Rank" column under the "Code Arena | WebDev" Leaderboard tab at https://arena.ai/leaderboard/code/webdev?rankBy=labs (Overall) filtered for "Labs" will be used to resolve this market.
Note: Models marked “AutoEval” at the applicable check time will not be considered, regardless of whether they display a rank or score.
AI companies will be ordered primarily by their Lab Rank at the market’s check time. If the results based on the lab ranking are ambiguous or unavailable, the relevant AI companies will be ordered according to their highest-ranking AI model in the leaderboard’s “Models” view. 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 AI lab/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 second 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".Traders see Anthropic holding the edge in this Code Arena WebDev market at 40.4% implied probability, followed by OpenAI at 24%, because its Claude models have shown consistent strength on coding benchmarks involving web frameworks, API integrations, and frontend-backend workflows. The broad distribution of odds across Alibaba, Google, and smaller labs reflects rapid iteration cycles where new model releases or fine-tunes can quickly shift relative rankings. Key differentiators include demonstrated agentic coding performance, context-window handling for large codebases, and integration with developer tools. With resolution at end of October, upcoming benchmark updates or public leaderboards could still alter the tight field.
This market will resolve according to the second-highest ranked Company based on the arena.ai Code Arena | WebDev Leaderboard when the table under "Code Arena | WebDev" filtered for "Labs" is checked on October 31, 2026, 12:00 PM ET.
Results from the "Lab Rank" column under the "Code Arena | WebDev" Leaderboard tab at https://arena.ai/leaderboard/code/webdev?rankBy=labs (Overall) filtered for "Labs" will be used to resolve this market.
Note: Models marked “AutoEval” at the applicable check time will not be considered, regardless of whether they display a rank or score.
AI companies will be ordered primarily by their Lab Rank at the market’s check time. If the results based on the lab ranking are ambiguous or unavailable, the relevant AI companies will be ordered according to their highest-ranking AI model in the leaderboard’s “Models” view. 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 AI lab/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 second 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 "Lab Rank" column under the "Code Arena | WebDev" Leaderboard tab at https://arena.ai/leaderboard/code/webdev?rankBy=labs (Overall) filtered for "Labs" will be used to resolve this market.
Note: Models marked “AutoEval” at the applicable check time will not be considered, regardless of whether they display a rank or score.
AI companies will be ordered primarily by their Lab Rank at the market’s check time. If the results based on the lab ranking are ambiguous or unavailable, the relevant AI companies will be ordered according to their highest-ranking AI model in the leaderboard’s “Models” view. 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 AI lab/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 second 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: Aug 12, 2026, 7:56 PM ET
Volume
$14,918End Date
Nov 1, 2026Market Opened
Aug 12, 2026, 7:56 PM ETResolver
0x69c47De9D...This market will resolve according to the second-highest ranked Company based on the arena.ai Code Arena | WebDev Leaderboard when the table under "Code Arena | WebDev" filtered for "Labs" is checked on October 31, 2026, 12:00 PM ET.
Results from the "Lab Rank" column under the "Code Arena | WebDev" Leaderboard tab at https://arena.ai/leaderboard/code/webdev?rankBy=labs (Overall) filtered for "Labs" will be used to resolve this market.
Note: Models marked “AutoEval” at the applicable check time will not be considered, regardless of whether they display a rank or score.
AI companies will be ordered primarily by their Lab Rank at the market’s check time. If the results based on the lab ranking are ambiguous or unavailable, the relevant AI companies will be ordered according to their highest-ranking AI model in the leaderboard’s “Models” view. 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 AI lab/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 second 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".Traders see Anthropic holding the edge in this Code Arena WebDev market at 40.4% implied probability, followed by OpenAI at 24%, because its Claude models have shown consistent strength on coding benchmarks involving web frameworks, API integrations, and frontend-backend workflows. The broad distribution of odds across Alibaba, Google, and smaller labs reflects rapid iteration cycles where new model releases or fine-tunes can quickly shift relative rankings. Key differentiators include demonstrated agentic coding performance, context-window handling for large codebases, and integration with developer tools. With resolution at end of October, upcoming benchmark updates or public leaderboards could still alter the tight field.
This market will resolve according to the second-highest ranked Company based on the arena.ai Code Arena | WebDev Leaderboard when the table under "Code Arena | WebDev" filtered for "Labs" is checked on October 31, 2026, 12:00 PM ET.
Results from the "Lab Rank" column under the "Code Arena | WebDev" Leaderboard tab at https://arena.ai/leaderboard/code/webdev?rankBy=labs (Overall) filtered for "Labs" will be used to resolve this market.
Note: Models marked “AutoEval” at the applicable check time will not be considered, regardless of whether they display a rank or score.
AI companies will be ordered primarily by their Lab Rank at the market’s check time. If the results based on the lab ranking are ambiguous or unavailable, the relevant AI companies will be ordered according to their highest-ranking AI model in the leaderboard’s “Models” view. 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 AI lab/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 second 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 "Lab Rank" column under the "Code Arena | WebDev" Leaderboard tab at https://arena.ai/leaderboard/code/webdev?rankBy=labs (Overall) filtered for "Labs" will be used to resolve this market.
Note: Models marked “AutoEval” at the applicable check time will not be considered, regardless of whether they display a rank or score.
AI companies will be ordered primarily by their Lab Rank at the market’s check time. If the results based on the lab ranking are ambiguous or unavailable, the relevant AI companies will be ordered according to their highest-ranking AI model in the leaderboard’s “Models” view. 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 AI lab/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 second 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
$14,918End Date
Nov 1, 2026Market Opened
Aug 12, 2026, 7:56 PM ETResolver
0x69c47De9D...Traders see Anthropic holding the edge in this Code Arena WebDev market at 40.4% implied probability, followed by OpenAI at 24%, because its Claude models have shown consistent strength on coding benchmarks involving web frameworks, API integrations, and frontend-backend workflows. The broad distribution of odds across Alibaba, Google, and smaller labs reflects rapid iteration cycles where new model releases or fine-tunes can quickly shift relative rankings. Key differentiators include demonstrated agentic coding performance, context-window handling for large codebases, and integration with developer tools. With resolution at end of October, upcoming benchmark updates or public leaderboards could still alter the tight field.
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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