Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets UK) Pick polygram.ink (preferred broker) |
80% | 20% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
80% | 20% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| O/U 0.5 | 80% |
| 2nd Half O/U 0.5 | 73% |
| Fluminense FC O/U 0.5 | 69% |
| 2nd Half O/U 1.5 | 64% |
| 1st Half O/U 0.5 | 61% |
| Fluminense FC 1st Half O/U 0.5 | 60% |
| Both Teams to Score in Second Half | 56% |
| Fluminense FC 1st Half O/U 1.5 | 50% |
| CS Independiente Rivadavia 1st Half O/U 1.5 | 50% |
| 2nd Half O/U 2.5 | 50% |
| Fluminense FC 2nd Half O/U 1.5 | 50% |
| CS Independiente Rivadavia 2nd Half O/U 1.5 | 50% |
| O/U 1.5 | 48% |
| Fluminense FC O/U 2.5 | 48% |
| Fluminense FC 2nd Half O/U 0.5 | 45% |
| CS Independiente Rivadavia 2nd Half O/U 0.5 | 45% |
| CS Independiente Rivadavia O/U 0.5 | 43% |
| CS Independiente Rivadavia O/U 2.5 | 34% |
| Both Teams to Score | 33% |
| Fluminense FC O/U 1.5 | 29% |
| O/U 2.5 | 21% |
| Fluminense FC (-1.5) | 20% |
| CS Independiente Rivadavia 1st Half O/U 0.5 | 12% |
| Both Teams to Score in First Half | 9% |
| 1st Half O/U 1.5 | 9% |
| O/U 3.5 | 7% |
| Fluminense FC (-2.5) | 6% |
| CS Independiente Rivadavia O/U 1.5 | 5% |
| 1st Half O/U 2.5 | 4% |
| CS Independiente Rivadavia (-1.5) | 3% |
| O/U 4.5 | 2% |
| CS Independiente Rivadavia (-2.5) | 1% |
| O/U 5.5 | 0% |
Market context
Market consensus: 80% chance of fluminense fc vs. cs independiente rivadavia - more markets. Prediction markets aggregate real capital to produce this probability signal. More markets for the Copa Libertadores game, scheduled for August 11 at 6:00 PM ET.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets UK, which mirrors the Polymarket order book directly.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
UK Frequently Asked Questions
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Best Prediction Markets UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- 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 Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- What are the best prediction markets for UK traders in 2026?
- For UKGC-regulated markets: Betfair Exchange (sports, politics) and Smarkets (sports, politics, lower commission than Betfair). For broader global event prediction: Polymarket (deepest liquidity, 0% fee, USDC settlement). For US-regulated option: Kalshi (USD, limited UK payment options). Most serious UK traders use a combination of Betfair for regulated sports and Polymarket for broader markets.
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