OpenAI’s September 3 launch of GPT-6 Astra quickly secured first place on the Code Arena WebDev leaderboard with 1,797 points, leaving Anthropic’s Claude Fable 5.1 just 35 points behind at second. Traders assign Anthropic a 78.7% implied probability of holding that runner-up lab position through September 30 because its coding-focused models continue to post near-frontier results on SWE-bench, Terminal-Bench, and agentic web-development tasks, while no other lab has closed the gap. OpenAI sits at 17.7% as the only realistic threat to drop into second, yet recent benchmark data show its lead is narrow and stable. Chinese labs such as Alibaba and Moonshot trail further back, and the month-end cutoff leaves little time for new releases or major leaderboard swings to alter the ordering.
Ringkasan eksperimental yang dihasilkan AI dengan referensi data Polymarket. Ini bukan saran trading dan tidak berperan dalam bagaimana pasar ini diselesaikan. · DiperbaruiAnthropic 78.8%
OpenAI 17.7%
Moonshot 2.7%
Alibaba 2.7%
$67,772 Vol.
$67,772 Vol.

Anthropic
79%

OpenAI
18%

Moonshot
3%

Alibaba
3%

SpaceXAI
1%

Tencent
1%

Z.ai
<1%

Meta
<1%

<1%

ByteDance
<1%

MiniMax
<1%

Xiaomi
<1%

DeepSeek
<1%

Thinky
<1%

Poolside
<1%

Mistral
<1%
Anthropic 78.8%
OpenAI 17.7%
Moonshot 2.7%
Alibaba 2.7%
$67,772 Vol.
$67,772 Vol.

Anthropic
79%

OpenAI
18%

Moonshot
3%

Alibaba
3%

SpaceXAI
1%

Tencent
1%

Z.ai
<1%

Meta
<1%

<1%

ByteDance
<1%

MiniMax
<1%

Xiaomi
<1%

DeepSeek
<1%

Thinky
<1%

Poolside
<1%

Mistral
<1%
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".
Pasar Dibuka: Jul 24, 2026, 7:45 PM ET
Sumber Resolusi
https://arena.ai/leaderboard/code/webdev?rankBy=labsResolver
0x69c47De9D...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".
Sumber Resolusi
https://arena.ai/leaderboard/code/webdev?rankBy=labsResolver
0x69c47De9D...OpenAI’s September 3 launch of GPT-6 Astra quickly secured first place on the Code Arena WebDev leaderboard with 1,797 points, leaving Anthropic’s Claude Fable 5.1 just 35 points behind at second. Traders assign Anthropic a 78.7% implied probability of holding that runner-up lab position through September 30 because its coding-focused models continue to post near-frontier results on SWE-bench, Terminal-Bench, and agentic web-development tasks, while no other lab has closed the gap. OpenAI sits at 17.7% as the only realistic threat to drop into second, yet recent benchmark data show its lead is narrow and stable. Chinese labs such as Alibaba and Moonshot trail further back, and the month-end cutoff leaves little time for new releases or major leaderboard swings to alter the ordering.
Ringkasan eksperimental yang dihasilkan AI dengan referensi data Polymarket. Ini bukan saran trading dan tidak berperan dalam bagaimana pasar ini diselesaikan. · Diperbarui
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