Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Mundial 2026 Grupos) Pick polygram.ink (preferred broker) |
99% | 1% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
99% | 1% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 1450+ | 99% |
| 1480+ | 2% |
| 1470+ | 2% |
| 1490+ | 2% |
| 1460+ | 2% |
| 1500+ | 1% |
| 1520+ | 0% |
Market context
OpenAI’s next GPT model must debut on Arena.AI’s text leaderboard and immediately hit a defined score threshold to resolve this market as “Yes”, a condition the crowd currently prices at just 2%. With GPT-5.5 Pro already sitting third overall at 98/100 in July 2026, and GPT-5.6 New released in July 2026 also scoring 98, the benchmark for the next iteration is set at the frontier of current performance rather than a modest improvement [3].
Historical precedent shows that new OpenAI GPT releases typically enter leaderboards with scores matching or slightly exceeding their immediate predecessor, but rarely trigger outlier jumps unless a major architectural shift occurs. The 2% implied probability suggests traders expect either a delayed launch, a lower initial score due to early-stage testing, or that the next model may not meet the “GPT” naming requirement if OpenAI pivots to a different branding convention, as seen in past transitions where versioning descriptors altered leaderboard attribution.
Key catalysts include OpenAI’s official release announcements and any updates to the Arena.AI leaderboard showing a new GPT-attributed model. Traders should monitor OpenAI’s community channels and developer forums for release dates, as a model appearing without “GPT” in its name would fail the market’s qualification criteria regardless of performance [7]. A confirmed launch in the coming months with a score at or above 98 would be the primary trigger to shift probability sharply upward.
Methodology
Football-specific comparison page for Pronóstico: Next GPT Model: Text Arena Debut?. 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
- Can I bet on individual matches?
- Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.
- 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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