Which company has best AI model end of July?

Platform comparison

Active sub-markets

Market context

The real-world event hinges on which company secures the top spot on the Chatbot Arena LLM Leaderboard by 31 July 2026, a date when the arena rank table is officially checked. With the crowd-implied probability at 11% for a “yes” outcome, the market reflects cautious optimism about a specific contender overtaking the current leader, Anthropic’s Claude Fable 5, which holds a 100/100 composite quality index as of June 2026[1].

Historical precedents show that leaderboard dominance often shifts with major model releases, such as Claude Opus 4.8’s May 2026 launch, which briefly topped the Artificial Analysis Intelligence Index and edged out GPT-5.5 in coding and agent tasks[1]. Comparable cases reveal that early-year leaders frequently lose ground by mid-year due to rapid iteration cycles, suggesting the current 11% probability may underestimate the volatility inherent in this sector.

Traders should monitor upcoming model announcements from late July, particularly any updates from Google, Microsoft, or OpenAI, as these could alter arena rankings significantly. Recent coverage highlights that human evaluation remains slower than AI-driven benchmarks, making ELO scores on the Chatbot Arena especially sensitive to new data inputs[2]. Additionally, regulatory frameworks like Germany’s GlüStV and US CFTC reach influence market accessibility, while “no-KYC up to $1,500” allows broader participation without identity verification, enhancing liquidity for this specific prediction.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

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

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, 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.

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.

Do I need to KYC for this market?

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