Which company has the best AI Agent end of August?: how this market works

What you need to know

This market is asking: which AI company will have the top-ranked AI agent on a specific public leaderboard by the end of August 2026? An 'AI agent' is an AI that can take actions and complete multi-step tasks on its own, not just answer questions. A win for Anthropic means their model sits at number one on that leaderboard on August 31. A win for OpenAI or Baidu means one of their models knocked Anthropic off the top spot. The market settles based on one specific thing: which company's model holds the number-one rank on the arena.ai Agent Arena Leaderboard at exactly 12:00 PM ET on August 31, 2026. The leaderboard must be filtered for 'Models'. If two models are tied, the one listed higher on the page wins, and if that is still a tie, company names are sorted alphabetically. If the leaderboard website is completely unavailable permanently, this market resolves as 'Other' instead of any named company. None of the provided news headlines relate to AI agent rankings, Anthropic, OpenAI, or Baidu. There is no relevant recent news to point to here. The kind of development worth watching would be a major new AI agent model release from any of these companies, or a significant shift in rankings on the arena.ai leaderboard itself. The market currently prices Anthropic at 70%, meaning participants see them as the clear frontrunner, but over a year remains before the deadline. That is a long time in AI, where a single new model release can completely reshuffle a leaderboard. The leaderboard itself reflects community votes and benchmarks that can shift quickly. OpenAI and Baidu are still priced as real possibilities. The main honest uncertainty is whether a surprise release from any company changes the picture before August 31, 2026.

The odds right now

• Anthropic70%
• OpenAI17%
• Moonshot5%
• Baidu4%
• MiniMax4%
• Alibaba4%
• Z.ai4%
• ByteDance4%
• DeepSeek3%
• Google3%
• Xiaomi3%
• Meta3%

Price history

How this resolves

Resolves August 31, 2026

This market will resolve according to the company that owns the model that has the highest rank based on the arena.ai Agent Arena Leaderboard when the table under "Agent Arena" filtered for "Models" is checked on August 31, 2026, 12:00 PM ET. Results from the "Rank" column under the "Agent Arena" Leaderboard tab at https://arena.ai/leaderboard/agent filtered for "Models" will be used to resolve this market. Read the full resolution rules on the live market page.

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