OpenAI's GPT-6 Astra model, released September 3 and quickly claiming the top spot on the Code Arena WebDev leaderboard with an 1800 Elo score as of September 11, drives the 84% market-implied probability. This crowdsourced benchmark evaluates agentic frontend coding, multi-step reasoning, and tool use through over 679,000 community votes, where Astra edges Anthropic's Claude Fable 5.1 by roughly 40 points. Traders see limited time for rivals to close the gap before month-end, though Anthropic's 11.5% odds reflect its strong historical positioning and potential for rapid updates. Other labs trail further on the Pareto frontier, underscoring how recent capability demonstrations translate directly into aggregated trader sentiment.
Resumen experimental generado por IA con datos de Polymarket. Esto no es asesoramiento de trading y no influye en cómo se resuelve este mercado. · ActualizadoOpenAI 84.1%
Anthropic 12%
SpaceXAI <1%
Alibaba <1%
$126,323 Vol.
$126,323 Vol.

OpenAI
84%

Anthropic
12%

SpaceXAI
1%

Alibaba
1%

Moonshot
1%

1%

Meta
<1%

Z.ai
<1%

ByteDance
<1%

MiniMax
<1%

Xiaomi
<1%

DeepSeek
<1%

Thinky
<1%

Tencent
<1%

Poolside
<1%

Mistral
<1%
OpenAI 84.1%
Anthropic 12%
SpaceXAI <1%
Alibaba <1%
$126,323 Vol.
$126,323 Vol.

OpenAI
84%

Anthropic
12%

SpaceXAI
1%

Alibaba
1%

Moonshot
1%

1%

Meta
<1%

Z.ai
<1%

ByteDance
<1%

MiniMax
<1%

Xiaomi
<1%

DeepSeek
<1%

Thinky
<1%

Tencent
<1%

Poolside
<1%

Mistral
<1%
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".
Mercado abierto: Jul 20, 2026, 7:23 PM ET
Fuente de resolución
https://arena.ai/leaderboard/code/webdevResolver
0x69c47De9D...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".
Fuente de resolución
https://arena.ai/leaderboard/code/webdevResolver
0x69c47De9D...OpenAI's GPT-6 Astra model, released September 3 and quickly claiming the top spot on the Code Arena WebDev leaderboard with an 1800 Elo score as of September 11, drives the 84% market-implied probability. This crowdsourced benchmark evaluates agentic frontend coding, multi-step reasoning, and tool use through over 679,000 community votes, where Astra edges Anthropic's Claude Fable 5.1 by roughly 40 points. Traders see limited time for rivals to close the gap before month-end, though Anthropic's 11.5% odds reflect its strong historical positioning and potential for rapid updates. Other labs trail further on the Pareto frontier, underscoring how recent capability demonstrations translate directly into aggregated trader sentiment.
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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