Pronóstico: Which company has best AI model end of August?

Platform comparison

Market context

The market prices a 91% chance that the company owning the top-ranked model on arena.ai’s Text Arena (Overall) leaderboard by 31 August 2026 will be the winner, with the settlement tied to a specific check time of 12:00 PM ET. This contract resolves on-chain via USDC on Polygon, using conditional tokens that lock in the outcome once the leaderboard snapshot is taken, making the price a direct reflection of crowd confidence in the current frontrunner’s dominance.

Historical precedent from similar arena-based markets shows that when a single model holds a lead exceeding 85% in human preference rankings, the probability rarely shifts below 80% unless a major architecture update or dataset leak occurs. In the July 2026 Math Arena market, Anthropic held 52% probability despite Z.ai trailing at 34%, yet the final outcome was determined by a late-stage benchmark surge that overturned early consensus [2]. Such volatility is uncommon in text-based arenas where human voting tends to stabilise around established leaders, reinforcing the 91% pricing as a rational bet on continuity rather than disruption.

Traders should monitor Anthropic’s release schedule for Claude Mythos Preview, which recently led hard science reasoning benchmarks and could extend its Text Arena dominance if style control adjustments are disabled [3]. Key catalysts include the next arena.ai leaderboard refresh, any announcements of new model weights, and dependencies on style control settings, as the market specifies “Adjustments: None” and filters for “Models” only [1]. A sudden drop in human preference votes or a rival model’s public benchmark surge would be the primary signal to reassess the 91% implied probability.

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Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Qué Es, 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?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Polymarket Qué Es. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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.