Trader sentiment strongly favors Anthropic at a 64.5% implied probability for the top Code Arena WebDev AI model by end of September, driven by its large language models' demonstrated strengths in code generation, debugging, and web-specific tasks such as frontend frameworks and API integration. Lower odds for OpenAI (20%), Z.ai (11.7%), and others reflect perceived gaps in specialized web development benchmarks and recent capability demonstrations relative to Anthropic's competitive positioning. The market aggregates real capital behind expectations of continued leadership in AI coding performance, though product timelines and new releases from rivals could still shift outcomes before resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedAnthropic 65%
OpenAI 14%
Meta 9.2%
Moonshot 5.4%
$40,475 Vol.
$40,475 Vol.
Sep 30, 2026
Anthropic
65%
OpenAI
19%
Meta
9%
Moonshot
5%
SpaceXAI
4%
Z.ai
11%
Alibaba
7%
DeepSeek
1%
1%
MiniMax
<1%
Mistral
<1%
ByteDance
<1%
Xiaomi
<1%
Thinky
<1%
Tencent
<1%
Poolside
<1%
Anthropic 65%
OpenAI 14%
Meta 9.2%
Moonshot 5.4%
$40,475 Vol.
$40,475 Vol.
Sep 30, 2026
Anthropic
$16,337 Vol.
65%
OpenAI
$2,119 Vol.
19%
Meta
$989 Vol.
9%
Moonshot
$12,338 Vol.
5%
SpaceXAI
$843 Vol.
4%
Z.ai
$1,132 Vol.
11%
Alibaba
$797 Vol.
7%
DeepSeek
$819 Vol.
1%
$916 Vol.
1%
MiniMax
$559 Vol.
<1%
Mistral
$729 Vol.
<1%
ByteDance
$468 Vol.
<1%
Xiaomi
$657 Vol.
<1%
Thinky
$560 Vol.
<1%
Tencent
$571 Vol.
<1%
Poolside
$641 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".Trader sentiment strongly favors Anthropic at a 64.5% implied probability for the top Code Arena WebDev AI model by end of September, driven by its large language models' demonstrated strengths in code generation, debugging, and web-specific tasks such as frontend frameworks and API integration. Lower odds for OpenAI (20%), Z.ai (11.7%), and others reflect perceived gaps in specialized web development benchmarks and recent capability demonstrations relative to Anthropic's competitive positioning. The market aggregates real capital behind expectations of continued leadership in AI coding performance, though product timelines and new releases from rivals could still shift outcomes before resolution.
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
$40,475End 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".Trader sentiment strongly favors Anthropic at a 64.5% implied probability for the top Code Arena WebDev AI model by end of September, driven by its large language models' demonstrated strengths in code generation, debugging, and web-specific tasks such as frontend frameworks and API integration. Lower odds for OpenAI (20%), Z.ai (11.7%), and others reflect perceived gaps in specialized web development benchmarks and recent capability demonstrations relative to Anthropic's competitive positioning. The market aggregates real capital behind expectations of continued leadership in AI coding performance, though product timelines and new releases from rivals could still shift outcomes before resolution.
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
$40,475End Date
Sep 30, 2026Market Opened
Jul 20, 2026, 7:23 PM ETResolution Source
https://arena.ai/leaderboard/code/webdevResolver
0x69c47De9D...Trader sentiment strongly favors Anthropic at a 64.5% implied probability for the top Code Arena WebDev AI model by end of September, driven by its large language models' demonstrated strengths in code generation, debugging, and web-specific tasks such as frontend frameworks and API integration. Lower odds for OpenAI (20%), Z.ai (11.7%), and others reflect perceived gaps in specialized web development benchmarks and recent capability demonstrations relative to Anthropic's competitive positioning. The market aggregates real capital behind expectations of continued leadership in AI coding performance, though product timelines and new releases from rivals could still shift outcomes before resolution.
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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