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

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Active sub-markets

Market context

On 31 July 2026 at 12:00 PM ET, the Chatbot Arena LLM Leaderboard will be checked to identify the company owning the model with the highest arena rank, resolving this prediction market. Today, Polymarket prices the YES contract at 11%, implying a low but non-trivial chance that a specific contender will top the list. This on-chain market, settled in USDC on Polygon via conditional tokens, reflects real-time crowd sentiment rather than abstract speculation about model performance.

Historical precedents show that leaderboard dominance often shifts rapidly; in early 2026, the highest arena score reached 1481, yet no single company maintained top rank for more than a few months [2]. Anthropic’s Claude Fable 5 currently leads composite quality indices at 100/100 across 357+ models, but past volatility suggests this position is not guaranteed [1]. The 11% probability likely accounts for such instability, where a new release or re-ranking could alter the outcome before the settlement window closes.

Traders should monitor upcoming model announcements from major labs, particularly those scheduled for late June and July, as these often trigger immediate leaderboard re-rankings. Dependencies include the release of updated benchmarks and the timing of style-control adjustments, which can significantly affect arena scores [3]. Recent coverage from Nebuly highlights how user-LLM interaction flows and engagement metrics increasingly influence leaderboard placements, making these schedules critical catalysts [4]. Any delay in model deployment or unexpected benchmark results could shift the implied probability materially before the check date.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Pronóstico: 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

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?

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.

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.

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.