Which company has best AI model end of June?

Platform comparison

Active sub-markets

Market context

The real-world event hinges on which company secures the top spot on the Chatbot Arena LLM Leaderboard when the table is checked at 12:00 PM ET on 30 June 2026, with the current crowd-implied probability of a "Yes" outcome sitting at zero per cent. This market resolves strictly by the company owning the model with the highest arena rank, ignoring pre-snapshot leaders, meaning the final ranking could shift dramatically before the settlement window closes.

Historical precedents from similar prediction markets show that early leaderboard positions often fail to hold, as new model releases and arena score recalibrations frequently overturn initial standings before the final check. Comparable cases in 2024 and 2025 demonstrated that a 0% implied probability at mid-month does not guarantee a negative outcome, given the volatility of crowdsourced battle data and the potential for late-stage model updates to alter the final hierarchy.

Traders must monitor upcoming model announcements from major firms and the scheduled updates to the Chatbot Arena leaderboard, as dependencies on inference speed and pricing could influence the final rank. A recent report from Arena AI highlights that Elo scores fluctuate weekly based on user engagement, suggesting that a single high-profile release could displace the current leader before the 30 June snapshot. Regulatory frameworks also shape accessibility: German GlüStV implications and US CFTC reach mean that "no-KYC up to $1,500" allows broader participation for this specific market, though compliance requirements may tighten if the settlement value exceeds local thresholds.

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Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

What does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.