Which company has best AI model end of July?

Platform comparison

Active sub-markets

Market context

The market will be decided by the top company on the Chatbot Arena text leaderboard at the July check, so the live race is less about headline launches and more about who can hold a narrow lead in a volatile ranking system. Arena-style ordering has tended to move in jumps rather than in a straight line, with current aggregate tables showing Anthropic’s Claude Fable 5 at the top of a June 2026 composite leaderboard, while other Arena-derived views still show OpenAI and Anthropic trading places across sub-rankings such as coding and maths[1][2].

That makes the 10% crowd price easy to read as a sceptical view on any one company sustaining clear separation by month-end. Comparable Arena histories show the top Elo climbing sharply over time, but also changing hands as new releases arrive and older models are re-weighted or overtaken; the current leaderboard snapshot on Arena’s text tab is therefore the key reference point, not longer-term brand strength[2][8]. A trader should watch for any late-June or July model drops, refreshes of existing flagship models, or changes in the Arena sorting and tie-break rules, because even small score gaps can decide the order if ranks are tied[8][9].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Which company has best AI model end of July? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Champions League Prediction — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

On Champions League Prediction, 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.

Is this market available outside the US?

Champions League Prediction 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.

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.