Which company has best AI model end of July?

Platform comparison

Active sub-markets

Market context

The real-world event determining this market is the final check of the Chatbot Arena LLM Leaderboard on 31 July 2026, where the company owning the model with the highest arena rank will be declared the winner. This process mirrors how Eurovision splits its result between a 50/50 jury and televote, or how the Oscars use a preferential ballot for Best Picture, ensuring that public perception and expert evaluation jointly shape the outcome. With the crowd currently implying only an 11% chance for a “yes” resolution, the probability reflects a market that views the leaderboard as volatile and the top spot as contested, much like the shifting dynamics seen in recent years where Anthropic’s Claude Fable 5 led composite indices in June 2026[1].

Traders should closely monitor upcoming model announcements from major firms, scheduled leaderboard updates, and any dependencies on style control settings that could alter rankings. Recent news from the LMSYS organisation highlights the importance of daily auto-updated snapshots of arena leaderboards, which include LLM, vision, code, and video models, all structured for historical tracking[3]. Any sudden jumps in ELO scores or models staying longest at the top, as observed in the leaderboard history, could signal a shift in momentum before the final check[10]. The cultural narrative around community-driven benchmarks continues to grow, reinforcing the idea that public-driven data will play a decisive role in determining the final winner[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 PolyGram — 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

Is this market available outside the US?

PolyGram 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.

What does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.