Which company has best AI model end of July?

Platform comparison

Active sub-markets

Market context

The real-world event hinges on which company’s model secures the top rank on the Chatbot Arena LLM Leaderboard when the table is checked at 12:00 PM ET on 31 July 2026. Resolution depends strictly on the “Rank” section of the leaderboard, ordered by arena score, with ties broken by that score. The current crowd-implied probability of 11% for a “YES” outcome suggests the market views the leading contender as unlikely to retain dominance, despite recent momentum.

Historically, Anthropic’s Claude Opus series has held unprecedented sway across multiple arena categories simultaneously. In April 2026, Claude Opus 4.6 became the first model to rank #1 across text, code, and search leaderboards at once, a feat unmatched by OpenAI, Google, or xAI [3]. By June 2026, Anthropic: Claude Fable 5 leads the composite quality index at 100/100, edging out GPT-5.5 and showing standout gains in coding and computer-use agents [1]. This pattern of sustained dominance frames the 11% probability as a sharp divergence from recent trends, where Anthropic models consistently outperformed rivals.

Traders must monitor upcoming model releases and benchmark updates, particularly any new versions from OpenAI or Google that could disrupt the current hierarchy. The Chatbot Arena relies on over 1 million user votes and the Bradley-Terry model to generate live rankings, making it highly sensitive to community sentiment shifts [2]. A recent announcement from May 28, 2026, introduced Claude Opus 4.8, which topped the Artificial Analysis Intelligence Index at 61.4, further cementing Anthropic’s lead [1]. Programmatic approaches should track daily JSON snapshots of the leaderboard via auto-updated repositories to detect rank changes in real time [4]. Any sudden drop in Opus scores or a surge in GPT-5.5 performance could trigger a rapid revaluation of the 11% probability.

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

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

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 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.