Anthropic’s recent releases, particularly Claude Fable 5.1 on September 1 with its expanded 1M-token context, improved caching economics, and strong agentic performance on tasks like multi-file web app generation, have solidified trader expectations that the lab will hold the second spot on the Code Arena WebDev leaderboard by month-end. These updates build on prior Claude Opus and Sonnet variants that already lead or cluster near the top in related SWE-bench, Terminal-Bench, and CursorBench evaluations measuring real-world frontend and fullstack coding. OpenAI’s GPT-6 Astra launch on September 3 narrowed some gaps on certain benchmarks but has not displaced Anthropic’s edge in the specific human-voted WebDev arena dynamics, leaving the latter with a clear market-implied lead for second place while smaller labs trail far behind on verified capability data.
Resumen experimental generado por IA con datos de Polymarket. Esto no es asesoramiento de trading y no influye en cómo se resuelve este mercado. · ActualizadoAnthropic 69.8%
OpenAI 25.9%
Alibaba 2.5%
Moonshot <1%
$76,100 Vol.
$76,100 Vol.

Anthropic
70%

OpenAI
26%

Alibaba
3%

Moonshot
1%

SpaceXAI
1%

Tencent
<1%

Z.ai
<1%

Meta
<1%

ByteDance
<1%

MiniMax
<1%

<1%

Xiaomi
<1%

DeepSeek
<1%

Thinky
<1%

Poolside
<1%

Mistral
<1%
Anthropic 69.8%
OpenAI 25.9%
Alibaba 2.5%
Moonshot <1%
$76,100 Vol.
$76,100 Vol.

Anthropic
70%

OpenAI
26%

Alibaba
3%

Moonshot
1%

SpaceXAI
1%

Tencent
<1%

Z.ai
<1%

Meta
<1%

ByteDance
<1%

MiniMax
<1%

<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".
Mercado abierto: Jul 24, 2026, 7:45 PM ET
Fuente de resolución
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".
Fuente de resolución
https://arena.ai/leaderboard/code/webdev?rankBy=labsResolver
0x69c47De9D...Anthropic’s recent releases, particularly Claude Fable 5.1 on September 1 with its expanded 1M-token context, improved caching economics, and strong agentic performance on tasks like multi-file web app generation, have solidified trader expectations that the lab will hold the second spot on the Code Arena WebDev leaderboard by month-end. These updates build on prior Claude Opus and Sonnet variants that already lead or cluster near the top in related SWE-bench, Terminal-Bench, and CursorBench evaluations measuring real-world frontend and fullstack coding. OpenAI’s GPT-6 Astra launch on September 3 narrowed some gaps on certain benchmarks but has not displaced Anthropic’s edge in the specific human-voted WebDev arena dynamics, leaving the latter with a clear market-implied lead for second place while smaller labs trail far behind on verified capability data.
Resumen experimental generado por IA con datos de Polymarket. Esto no es asesoramiento de trading y no influye en cómo se resuelve este mercado. · Actualizado
Cuidado con los enlaces externos.
Cuidado con los enlaces externos.
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