Recent Moonshot AI’s July 2026 Kimi K3 release—a 2.8-trillion-parameter open-weight model that matches or exceeds Anthropic’s Fable 5 and OpenAI systems on coding and agentic benchmarks—has elevated Chinese labs in trader assessments for third-best AI agent capability by September. DeepSeek, Z.ai, and similar labs benefit from sustained cost advantages and strong open-weight performance that appeal to developers building agents, while U.S. frontrunners like OpenAI and Anthropic appear positioned for the top two spots. With probabilities clustered near 15-23% for leading contenders and many outcomes near even odds, sentiment reflects rapid capability convergence, benchmark volatility, and the edge open models hold for practical agent deployment.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedThird-best AI Agent Lab end of September?
Third-best AI Agent Lab end of September?
Moonshot 23.5%
OpenAI 16%
Z.ai 16%
Anthropic 14%
NEW
NEW
Sep 30, 2026
Moonshot
24%
OpenAI
16%
Z.ai
16%
Anthropic
14%
Microsoft
9%
ByteDance
8%
Mistral
8%
Meta
4%
SpaceXAI
4%
4%
Alibaba
4%
Nvidia
3%
Amazon
3%
Xiaomi
3%
MiniMax
3%
Baidu
3%
Meituan
3%
DeepSeek
14%
Moonshot 23.5%
OpenAI 16%
Z.ai 16%
Anthropic 14%
NEW
NEW
Sep 30, 2026
Moonshot
$129 Vol.
24%
OpenAI
$79 Vol.
16%
Z.ai
$79 Vol.
16%
Anthropic
$1,625 Vol.
14%
Microsoft
$20 Vol.
9%
ByteDance
$60 Vol.
8%
Mistral
$72 Vol.
8%
Meta
$20 Vol.
4%
SpaceXAI
$20 Vol.
4%
$20 Vol.
4%
Alibaba
$34 Vol.
4%
Nvidia
$20 Vol.
3%
Amazon
$33 Vol.
3%
Xiaomi
$25 Vol.
3%
MiniMax
$20 Vol.
3%
Baidu
$54 Vol.
3%
Meituan
$20 Vol.
3%
DeepSeek
$69 Vol.
14%
This market will resolve according to the third-highest ranked Company based on the arena.ai Agent Arena Leaderboard when the table under "Agent Arena" filtered for "Labs" is checked on September 30, 2026, 12:00 PM ET.
Results from the "Rank" column under the "Agent Arena" Leaderboard tab at https://arena.ai/leaderboard/agent filtered for "Labs" will be used to resolve this market.
Models marked “AutoEval” at the applicable check time will not be considered, regardless of whether they display a rank or score.
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 third place under this ranking.
The resolution source for this market is the arena.ai Agent Arena 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".Recent Moonshot AI’s July 2026 Kimi K3 release—a 2.8-trillion-parameter open-weight model that matches or exceeds Anthropic’s Fable 5 and OpenAI systems on coding and agentic benchmarks—has elevated Chinese labs in trader assessments for third-best AI agent capability by September. DeepSeek, Z.ai, and similar labs benefit from sustained cost advantages and strong open-weight performance that appeal to developers building agents, while U.S. frontrunners like OpenAI and Anthropic appear positioned for the top two spots. With probabilities clustered near 15-23% for leading contenders and many outcomes near even odds, sentiment reflects rapid capability convergence, benchmark volatility, and the edge open models hold for practical agent deployment.
This market will resolve according to the third-highest ranked Company based on the arena.ai Agent Arena Leaderboard when the table under "Agent Arena" filtered for "Labs" is checked on September 30, 2026, 12:00 PM ET.
Results from the "Rank" column under the "Agent Arena" Leaderboard tab at https://arena.ai/leaderboard/agent filtered for "Labs" will be used to resolve this market.
Models marked “AutoEval” at the applicable check time will not be considered, regardless of whether they display a rank or score.
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 third place under this ranking.
The resolution source for this market is the arena.ai Agent Arena 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 "Agent Arena" Leaderboard tab at https://arena.ai/leaderboard/agent filtered for "Labs" will be used to resolve this market.
Models marked “AutoEval” at the applicable check time will not be considered, regardless of whether they display a rank or score.
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 third place under this ranking.
The resolution source for this market is the arena.ai Agent Arena 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: Aug 12, 2026, 7:40 PM ET
Volume
$2,400End Date
Sep 30, 2026Market Opened
Aug 12, 2026, 7:40 PM ETResolver
0x69c47De9D...This market will resolve according to the third-highest ranked Company based on the arena.ai Agent Arena Leaderboard when the table under "Agent Arena" filtered for "Labs" is checked on September 30, 2026, 12:00 PM ET.
Results from the "Rank" column under the "Agent Arena" Leaderboard tab at https://arena.ai/leaderboard/agent filtered for "Labs" will be used to resolve this market.
Models marked “AutoEval” at the applicable check time will not be considered, regardless of whether they display a rank or score.
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 third place under this ranking.
The resolution source for this market is the arena.ai Agent Arena 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".Recent Moonshot AI’s July 2026 Kimi K3 release—a 2.8-trillion-parameter open-weight model that matches or exceeds Anthropic’s Fable 5 and OpenAI systems on coding and agentic benchmarks—has elevated Chinese labs in trader assessments for third-best AI agent capability by September. DeepSeek, Z.ai, and similar labs benefit from sustained cost advantages and strong open-weight performance that appeal to developers building agents, while U.S. frontrunners like OpenAI and Anthropic appear positioned for the top two spots. With probabilities clustered near 15-23% for leading contenders and many outcomes near even odds, sentiment reflects rapid capability convergence, benchmark volatility, and the edge open models hold for practical agent deployment.
This market will resolve according to the third-highest ranked Company based on the arena.ai Agent Arena Leaderboard when the table under "Agent Arena" filtered for "Labs" is checked on September 30, 2026, 12:00 PM ET.
Results from the "Rank" column under the "Agent Arena" Leaderboard tab at https://arena.ai/leaderboard/agent filtered for "Labs" will be used to resolve this market.
Models marked “AutoEval” at the applicable check time will not be considered, regardless of whether they display a rank or score.
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 third place under this ranking.
The resolution source for this market is the arena.ai Agent Arena 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 "Agent Arena" Leaderboard tab at https://arena.ai/leaderboard/agent filtered for "Labs" will be used to resolve this market.
Models marked “AutoEval” at the applicable check time will not be considered, regardless of whether they display a rank or score.
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 third place under this ranking.
The resolution source for this market is the arena.ai Agent Arena 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
$2,400End Date
Sep 30, 2026Market Opened
Aug 12, 2026, 7:40 PM ETResolver
0x69c47De9D...Recent Moonshot AI’s July 2026 Kimi K3 release—a 2.8-trillion-parameter open-weight model that matches or exceeds Anthropic’s Fable 5 and OpenAI systems on coding and agentic benchmarks—has elevated Chinese labs in trader assessments for third-best AI agent capability by September. DeepSeek, Z.ai, and similar labs benefit from sustained cost advantages and strong open-weight performance that appeal to developers building agents, while U.S. frontrunners like OpenAI and Anthropic appear positioned for the top two spots. With probabilities clustered near 15-23% for leading contenders and many outcomes near even odds, sentiment reflects rapid capability convergence, benchmark volatility, and the edge open models hold for practical agent deployment.
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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