Which company has the best AI Agent end of June?

What you need to know

This market is asking: which company — Anthropic, OpenAI, or Meta — will have the single best AI agent according to one specific public ranking on June 30, 2026? An 'AI agent' is an AI that can take actions on your behalf, like browsing the web, writing code, or completing multi-step tasks — not just answering questions. A win for Anthropic means their model sits at the top of that leaderboard on that day; a win for OpenAI or Meta means the same for them. The answer is decided by one thing only: which company's model holds the number-one spot on the Agent Arena Leaderboard (arena.ai/leaderboard/agent) at exactly 12:00 PM ET on June 30, 2026. That leaderboard ranks AI agents based on how users rate them head-to-head. If two models are tied, the one listed higher on the page wins; if still tied, company names are sorted alphabetically as a last resort. One important edge case: if the website is down that day, the market stays open until it comes back online. None of the provided news headlines are relevant to this market — they cover stocks, metals, and a SpaceX IPO, not AI agent performance. The kind of news that would actually matter here includes new AI agent model releases from Anthropic or OpenAI, significant shifts in the Agent Arena rankings, or major updates to how that leaderboard collects its data. The main challenge is that AI agent rankings can shift quickly — a single new model release between now and June 30, 2026 could completely change the leaderboard. The market currently prices Anthropic at around 68% and OpenAI at 31%, so it is not a coin toss, but it is far from settled. The leaderboard itself is also community-driven, meaning it reflects user votes that can move as people experiment with new models. Over a year out, a lot can change.

The odds right now

• Anthropic67%
• OpenAI32%
• Meta3%
• Moonshot0%
• DeepSeek0%
• Microsoft0%
• Google0%
• Mistral0%
• Baidu0%
• ByteDance0%
• Z.ai0%
• xAI0%

Price history

How this resolves

Resolves June 30, 2026

This market will resolve according to the company that owns the model that has the highest rank based on the Agent Arena Leaderboard (https://arena.ai/leaderboard/agent) when the table under "Agent Arena" filtered for "Models" is checked on June 30, 2026, 12:00 PM ET. Results from the "Rank" column under the "Agent Arena" Leaderboard tab at https://arena.ai/leaderboard/agent 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 “xAI”). This market will resolve based on the company that occupies first place under this ranking. The resolution source for this market is the Agent Arena Leaderboard found at https://arena.ai/leaderboard/agent. 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 based on another resolution source.

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