Which company has best AI model end of June?

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Active sub-markets

Market context

The Chatbot Arena leaderboard has remained relatively stable over the past two days, with OpenAI's GPT-4o and Anthropic's Claude 3.5 Sonnet continuing to occupy the top positions. The 14% implied probability reflects market scepticism that any challenger will dislodge the current leaders by June 2026, despite the rapid pace of model releases across the sector. Recent performance metrics show GPT-4o maintaining a slight edge in overall Arena score, though Claude 3.5 Sonnet has closed the gap in specific benchmark categories over the past quarter.

Historical precedent suggests leaderboard dominance proves difficult to overturn. When Claude 3 Opus held the top ranking in early 2024, it took several months and multiple iterations before competitors gained ground. The current gap between first and third place is approximately 50 Arena points—a substantial margin that typically requires either a major architectural breakthrough or significant training improvements to bridge. Notably, no model from a new entrant has reached the top three positions since the leaderboard's inception, though this reflects the capital and talent concentration at established labs rather than immutable technical constraints.

Traders should monitor announcements from Anthropic, OpenAI, and Google DeepMind through to June 2026, particularly around model releases scheduled for late 2025 and early 2026. Meta's open-source Llama series and xAI's Grok represent potential wildcards, though neither has demonstrated consistent leaderboard competitiveness. The settlement mechanism's reliance on a single snapshot at 12:00 PM ET on 30 June 2026 means that timing of any major release in the preceding weeks could prove decisive.

Methodology

We track Which company has best AI model end of June? 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?

Prediction Today 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'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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Prediction Today 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.