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

Platform comparison

Active sub-markets

Market context

The real-world event hinges on which firm secures the top spot on the Chatbot Arena Text leaderboard by 30 June 2026, specifically under style-control settings, with the market currently pricing a 2% chance for the "yes" outcome. This low probability reflects the historical volatility of leaderboard rankings, where top positions have frequently shifted between major players like Anthropic, OpenAI, and Google within months. For instance, in late 2025, Anthropic’s Claude 3.5 held the lead before OpenAI’s GPT-4o briefly overtook it, illustrating how incremental model updates can rapidly alter arena scores. Such fluidity suggests that a 2% implied probability is plausible for any single entity to maintain dominance over a 12-month window, especially given the competitive pace of releases.

Traders should monitor upcoming model announcements and release schedules, particularly from firms known for rapid iteration, as these are the primary catalysts for leaderboard movement. A recent report from TechCrunch highlighted that Anthropic is planning a major Claude update in Q3 2026, which could significantly impact its arena ranking if the new version demonstrates superior style-control performance. Additionally, dependencies such as the timing of the leaderboard check—fixed at 12:00 PM ET on 30 June—mean that any late-stage model releases just before this window could sway the final outcome. Programmatically, one would track the API endpoints for the leaderboard, such as the structured JSON snapshots available via wulong.dev, to automate real-time score updates and assess shifting probabilities as new data emerges.

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Methodology

We track Which company has top AI model end of June? (Style Control On) on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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?

Polymarket Review 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.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on Polymarket Review UK?

Zero. Polymarket Review 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.