OpenAI's commanding 79.3% implied probability reflects its sustained edge in coding benchmarks and large language model performance for web development tasks, driven by recent iterations that enhance reasoning, code generation, and framework integration. Traders see limited near-term disruption from competitors, with Anthropic at 20% trailing on specialized web dev metrics despite strong general capabilities. The crowded field of other entrants at 0.1–0.7% odds highlights the gap in verified arena results and developer adoption. As the end-of-September resolution nears, any final benchmark releases or model updates could shift sentiment, though current capital-weighted consensus favors OpenAI's demonstrated technical lead.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedOpenAI 79.5%
Anthropic 20%
SpaceXAI <1%
ByteDance <1%
$119,547 Vol.
$119,547 Vol.
Sep 30, 2026
OpenAI
79%
Anthropic
20%
SpaceXAI
1%
ByteDance
1%
Alibaba
1%
Z.ai
1%
Meta
<1%
<1%
Moonshot
<1%
MiniMax
<1%
Xiaomi
<1%
DeepSeek
<1%
Thinky
<1%
Tencent
<1%
Poolside
<1%
Mistral
<1%
OpenAI 79.5%
Anthropic 20%
SpaceXAI <1%
ByteDance <1%
$119,547 Vol.
$119,547 Vol.
Sep 30, 2026
OpenAI
$17,500 Vol.
79%
Anthropic
$49,904 Vol.
20%
SpaceXAI
$5,474 Vol.
1%
ByteDance
$1,058 Vol.
1%
Alibaba
$7,389 Vol.
1%
Z.ai
$4,740 Vol.
1%
Meta
$2,922 Vol.
<1%
$4,324 Vol.
<1%
Moonshot
$19,211 Vol.
<1%
MiniMax
$1,119 Vol.
<1%
Xiaomi
$657 Vol.
<1%
DeepSeek
$2,690 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".OpenAI's commanding 79.3% implied probability reflects its sustained edge in coding benchmarks and large language model performance for web development tasks, driven by recent iterations that enhance reasoning, code generation, and framework integration. Traders see limited near-term disruption from competitors, with Anthropic at 20% trailing on specialized web dev metrics despite strong general capabilities. The crowded field of other entrants at 0.1–0.7% odds highlights the gap in verified arena results and developer adoption. As the end-of-September resolution nears, any final benchmark releases or model updates could shift sentiment, though current capital-weighted consensus favors OpenAI's demonstrated technical lead.
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
$119,547End 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".OpenAI's commanding 79.3% implied probability reflects its sustained edge in coding benchmarks and large language model performance for web development tasks, driven by recent iterations that enhance reasoning, code generation, and framework integration. Traders see limited near-term disruption from competitors, with Anthropic at 20% trailing on specialized web dev metrics despite strong general capabilities. The crowded field of other entrants at 0.1–0.7% odds highlights the gap in verified arena results and developer adoption. As the end-of-September resolution nears, any final benchmark releases or model updates could shift sentiment, though current capital-weighted consensus favors OpenAI's demonstrated technical lead.
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
$119,547End Date
Oct 1, 2026Market Opened
Jul 20, 2026, 7:23 PM ETResolution Source
https://arena.ai/leaderboard/code/webdevResolver
0x69c47De9D...OpenAI's commanding 79.3% implied probability reflects its sustained edge in coding benchmarks and large language model performance for web development tasks, driven by recent iterations that enhance reasoning, code generation, and framework integration. Traders see limited near-term disruption from competitors, with Anthropic at 20% trailing on specialized web dev metrics despite strong general capabilities. The crowded field of other entrants at 0.1–0.7% odds highlights the gap in verified arena results and developer adoption. As the end-of-September resolution nears, any final benchmark releases or model updates could shift sentiment, though current capital-weighted consensus favors OpenAI's demonstrated technical lead.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions