Which company has top AI model end of June? (Style Control On)

Platform comparison

Active sub-markets

Market context

The real-world event this market tracks is which company will own the model ranked highest on the Chatbot Arena leaderboard when the table is checked on 30 June 2026. A YES share means you believe that specific company will win; a NO share means you believe it will not. Currently, the crowd implies only a 2% chance of a YES outcome, suggesting the market views this company as a long shot to lead the arena.

Historically, leaderboard dominance has shifted rapidly, with Anthropic’s Claude Fable 5 leading the June 2026 composite index across 357 models[1]. Past cycles show that early leaders like OpenAI or Google often face steep challenges from newer entrants, and a 2% probability aligns with cases where a company trails significantly in user votes and Elo ratings[2][3]. Such low odds typically reflect a model that lacks the broad user engagement required to secure top arena rank.

Traders should monitor upcoming model releases, inference speed benchmarks, and user vote surges, as these directly influence arena rankings. Recent updates from LMSYS highlight that Elo ratings derive from over 6 million user votes, making release timing and community adoption critical catalysts[3]. Any announcement of a major style-controlled model update or a spike in arena participation could alter the probability, though current data suggests the company remains far behind the leader[1].

Sources: 1 · 2 · 3 · 4 · 5

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 Prediction Market UK, 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

Is this market available outside the US?

Prediction Market UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What does it cost to trade on Prediction Market UK?

Zero. Prediction Market UK 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.

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.