Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via World Cup 2026 Favorites) Pick polygram.ink (preferred broker) |
96% | 4% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
96% | 4% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Other | 96% |
| claude-opus-4-6-thinking | 1% |
| claude-opus-4-6 | 1% |
| claude-fable-5 | 1% |
Market context
The arena.ai Text Arena leaderboard will determine which large language model holds the top ranking on 1 August 2026. The settlement mechanism relies on the Overall category with style control disabled, pulling directly from the public leaderboard's Rank column at a specified timestamp. Current crowd pricing at 2% implies either extreme confidence in a dominant incumbent or substantial uncertainty about which model will lead in eighteen months' time.
Historical precedent from LLM benchmarking shows rankings shift materially when new model releases arrive. GPT-4, Claude 3 Opus, and Gemini 2.0 each displaced previous leaders upon launch, though the magnitude and duration of dominance varied. The arena.ai leaderboard specifically measures conversational performance rather than raw capability metrics, meaning user preference and instruction-following quality matter as much as underlying model scale. Models that ranked first in mid-2024 have already ceded ground to newer releases, suggesting the top position in August 2026 will likely belong to a model not yet publicly announced.
Traders should monitor release schedules from Anthropic, OpenAI, Google DeepMind, and xAI throughout 2025 and early 2026, as any major model launch within six months of settlement could reshape the leaderboard entirely. The specific weighting of arena.ai's evaluation methodology—which emphasises nuanced reasoning and user satisfaction over benchmark scores—means models optimised for those dimensions will have structural advantages. Announcements regarding training data, constitutional approaches, or architectural innovations from leading labs will signal which organisations are positioning for leaderboard dominance by mid-2026.
Methodology
Football-specific comparison page for Best AI model on August 1?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi (US-focused) or Manifold (play-money).
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
FAQ
- Are prediction markets better than sports betting?
- Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.
- What are live sports odds on Polymarket?
- Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.
- Which sports markets are available?
- Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.
- How fast do sports winnings settle?
- Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.
- What's the difference between match odds and outright odds?
- Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.
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