Which company has top AI model end of June? (Style Control On)

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Market context

The real-world event is a straightforward check of the Chatbot Arena Text leaderboard on 30 June 2026 at 12:00 PM ET, where the company owning the model with the highest arena rank under style control will be declared the winner. A programmatically minded trader would automate this by querying the public API for the “Text Arena | Overall” leaderboard, filtering for the top rank with style control enabled, and extracting the owning entity from the model metadata before the settlement window closes.

Historically, Anthropic has dominated the arena’s top positions, with Claude Opus 4.6 becoming the first model to hold #1 across all three LMSys leaderboards simultaneously in late February 2026, a feat no OpenAI, Google, or xAI model has replicated [2]. This precedent frames the current 2% crowd-implied probability as an outlier, suggesting the market expects a sudden shift rather than a continuation of Anthropic’s lead, which has held the top spot in the Text Arena since February with scores of 1503 [2].

Traders should monitor upcoming model releases and benchmark announcements from major labs, particularly any late-June updates that could alter the leaderboard before the check date. Recent coverage highlights how Anthropic maintains the top four spots in the Code Arena, with Opus 4.6 leading at 1560, while GPT-5.2 only appears at #5, nearly 90 points behind [2]. Any new release from OpenAI or Google that narrows this gap could be the catalyst needed to overturn the current probability, making release schedules and performance benchmarks the critical dependencies to watch.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Which company has top AI model end of June? (Style Control On) 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 Polymarket Bot UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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 Polymarket Bot UK, 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.

Is this market available outside the US?

Polymarket Bot UK 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 does it cost to trade on Polymarket Bot UK?

Zero. Polymarket Bot UK 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.

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.