OpenAI’s GPT-6 Astra Max holds the top spot on the Code Arena WebDev leaderboard with an Elo score near 1793, while Anthropic’s Claude Fable 5.1 Max sits at roughly 1755 and Claude Opus 5 Max at 1691 as of the latest September 23 update. This positioning, driven by recent releases and sustained community votes on agentic frontend tasks, underpins trader consensus that Anthropic ranks as the clear second-best lab heading into month-end. Newer Anthropic models such as Opus 5.5, released September 22, have shown gains on coding benchmarks like Terminal-Bench but have not yet displaced the established leaderboard order. Other labs trail by wider margins, with limited near-term catalysts expected to alter the ranking before resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedAnthropic 63.9%
OpenAI 34.8%
Moonshot 1.1%
Alibaba <1%
$96,166 Vol.
$96,166 Vol.
Sep 30, 2026
Anthropic
64%
OpenAI
35%
Moonshot
1%
Alibaba
1%
Z.ai
<1%
SpaceXAI
<1%
Meta
<1%
ByteDance
<1%
MiniMax
<1%
<1%
Xiaomi
<1%
DeepSeek
<1%
Thinky
<1%
Tencent
<1%
Poolside
<1%
Mistral
<1%
Anthropic 63.9%
OpenAI 34.8%
Moonshot 1.1%
Alibaba <1%
$96,166 Vol.
$96,166 Vol.
Sep 30, 2026
Anthropic
$28,251 Vol.
64%
OpenAI
$17,021 Vol.
35%
Moonshot
$13,318 Vol.
1%
Alibaba
$18,226 Vol.
1%
Z.ai
$2,256 Vol.
<1%
SpaceXAI
$2,686 Vol.
<1%
Meta
$1,709 Vol.
<1%
ByteDance
$3,054 Vol.
<1%
MiniMax
$598 Vol.
<1%
$1,766 Vol.
<1%
Xiaomi
$1,468 Vol.
<1%
DeepSeek
$1,022 Vol.
<1%
Thinky
$617 Vol.
<1%
Tencent
$2,008 Vol.
<1%
Poolside
$1,035 Vol.
<1%
Mistral
$1,130 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 September 30, 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.
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".OpenAI’s GPT-6 Astra Max holds the top spot on the Code Arena WebDev leaderboard with an Elo score near 1793, while Anthropic’s Claude Fable 5.1 Max sits at roughly 1755 and Claude Opus 5 Max at 1691 as of the latest September 23 update. This positioning, driven by recent releases and sustained community votes on agentic frontend tasks, underpins trader consensus that Anthropic ranks as the clear second-best lab heading into month-end. Newer Anthropic models such as Opus 5.5, released September 22, have shown gains on coding benchmarks like Terminal-Bench but have not yet displaced the established leaderboard order. Other labs trail by wider margins, with limited near-term catalysts expected to alter the ranking before resolution.
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 September 30, 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.
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.
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: Jul 24, 2026, 7:45 PM ET
Volume
$96,166End Date
Sep 30, 2026Market Opened
Jul 24, 2026, 7:45 PM ETResolution Source
https://arena.ai/leaderboard/code/webdev?rankBy=labsResolver
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 September 30, 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.
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".OpenAI’s GPT-6 Astra Max holds the top spot on the Code Arena WebDev leaderboard with an Elo score near 1793, while Anthropic’s Claude Fable 5.1 Max sits at roughly 1755 and Claude Opus 5 Max at 1691 as of the latest September 23 update. This positioning, driven by recent releases and sustained community votes on agentic frontend tasks, underpins trader consensus that Anthropic ranks as the clear second-best lab heading into month-end. Newer Anthropic models such as Opus 5.5, released September 22, have shown gains on coding benchmarks like Terminal-Bench but have not yet displaced the established leaderboard order. Other labs trail by wider margins, with limited near-term catalysts expected to alter the ranking before resolution.
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 September 30, 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.
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.
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
$96,166End Date
Sep 30, 2026Market Opened
Jul 24, 2026, 7:45 PM ETResolution Source
https://arena.ai/leaderboard/code/webdev?rankBy=labsResolver
0x69c47de9d...OpenAI’s GPT-6 Astra Max holds the top spot on the Code Arena WebDev leaderboard with an Elo score near 1793, while Anthropic’s Claude Fable 5.1 Max sits at roughly 1755 and Claude Opus 5 Max at 1691 as of the latest September 23 update. This positioning, driven by recent releases and sustained community votes on agentic frontend tasks, underpins trader consensus that Anthropic ranks as the clear second-best lab heading into month-end. Newer Anthropic models such as Opus 5.5, released September 22, have shown gains on coding benchmarks like Terminal-Bench but have not yet displaced the established leaderboard order. Other labs trail by wider margins, with limited near-term catalysts expected to alter the ranking 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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