Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi Alternative UK) Pick polygram.ink (preferred broker) |
83% | 17% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
83% | 17% | 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 |
|---|---|
| O/U 0.5 | 83% |
| 2nd Half O/U 0.5 | 75% |
| CR Vasco da Gama O/U 0.5 | 74% |
| 2nd Half O/U 1.5 | 64% |
| Both Teams to Score in Second Half | 55% |
| O/U 1.5 | 50% |
| Club Olimpia O/U 2.5 | 50% |
| Club Olimpia 1st Half O/U 1.5 | 50% |
| 2nd Half O/U 2.5 | 50% |
| CR Vasco da Gama 2nd Half O/U 0.5 | 50% |
| CR Vasco da Gama 2nd Half O/U 1.5 | 50% |
| Club Olimpia 2nd Half O/U 0.5 | 50% |
| Club Olimpia 2nd Half O/U 1.5 | 50% |
| CR Vasco da Gama O/U 1.5 | 35% |
| Club Olimpia O/U 0.5 | 34% |
| 1st Half O/U 0.5 | 32% |
| CR Vasco da Gama (-1.5) | 28% |
| CR Vasco da Gama 1st Half O/U 0.5 | 28% |
| Both Teams to Score | 26% |
| O/U 2.5 | 23% |
| Club Olimpia (-2.5) | 14% |
| CR Vasco da Gama O/U 2.5 | 12% |
| CR Vasco da Gama (-2.5) | 11% |
| Club Olimpia 1st Half O/U 0.5 | 10% |
| O/U 3.5 | 8% |
| O/U 4.5 | 8% |
| 1st Half O/U 1.5 | 6% |
| Club Olimpia O/U 1.5 | 6% |
| CR Vasco da Gama 1st Half O/U 1.5 | 3% |
| O/U 5.5 | 2% |
| Both Teams to Score in First Half | 2% |
| Club Olimpia (-1.5) | 1% |
| 1st Half O/U 2.5 | 1% |
Market context
CR Vasco da Gama will face Club Olimpia in a Copa Sudamericana fixture on 13 August 2026 at 6:00 PM ET. The match represents a knockout-stage encounter in South America's secondary continental club competition, with progression stakes for both Brazilian and Paraguayan sides. Polymarket's current 30% implied probability for additional markets reflects moderate confidence in further betting liquidity being offered on this specific fixture.
Historical precedent suggests Copa Sudamericana matches attract fragmented liquidity across platforms. Kalshi's regulatory framework in the US typically restricts sports betting markets, whereas Betfair and Smarkets maintain broader international coverage of South American football. Polymarket's decimal-odds format (currently around 3.33 for a YES settlement) differs from the fractional odds convention on Betfair, affecting how traders convert between platforms. The 30% probability sits below typical thresholds for guaranteed secondary-market expansion in lower-tier continental competitions, though Vasco da Gama's brand recognition occasionally drives deeper order books than comparable fixtures.
Traders should monitor squad announcements and injury reports in the fortnight preceding the match, particularly regarding key Vasco da Gama players. Olimpia's recent form in Paraguay's domestic league and any Copa Sudamericana rule changes affecting market eligibility warrant attention. Fee structures diverge meaningfully: Polymarket charges 2% on net profits, whilst Smarkets' commission operates on a per-bet basis. The settlement window closing at 22:00 UTC on 13 August leaves minimal post-match trading window, concentrating liquidity into pre-match periods across all platforms.
Methodology
This page compares CR Vasco da Gama vs. Club Olimpia - More Markets specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi Alternative UK, which mirrors the Polymarket order book at 0% fees.
Resolution & payout
Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.
Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.
UK Frequently Asked Questions
- What does Polymarket cost vs Kalshi?
- Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.
- What about Smarkets as an alternative?
- Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.
- Which platform is accessible globally?
- Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Kalshi Alternative UK has a different geo footprint and routes to Polymarket's order book at 0% fees.
- Polymarket vs Betfair Exchange: which is better for UK prediction trading?
- Betfair Exchange offers UKGC regulation, GBP settlement, and potentially tax-free winnings — but focuses on sports and politics only. Polymarket has deeper liquidity, 0% platform fee, global event coverage, and crypto/geopolitical markets Betfair doesn't offer. For UK traders: Betfair for regulated GBP sports markets; Polymarket for broader, global prediction events.
- Is Kalshi available in the UK?
- Kalshi is a US CFTC-regulated prediction exchange. UK residents can create accounts but must use USD and US payment methods. Kalshi's product range overlaps with Polymarket but with lower liquidity on most contracts. For UK traders, Polymarket typically offers better prices due to higher global volume.
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