Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi Alternative UK) Pick polygram.ink (preferred broker) |
61% | 39% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
61% | 39% | 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 |
|---|---|
| US Open WTA: Maja Chwalinska vs Taylor Townsend Set Handicap +/-1.5 | 61% |
| US Open WTA: Maja Chwalinska vs Taylor Townsend Set 1 O/U 8.5 | 51% |
| Completed Match | 50% |
| US Open WTA: Maja Chwalinska vs Taylor Townsend Set 2 O/U 8.5 | 50% |
| US Open WTA: Maja Chwalinska vs Taylor Townsend Set 1 O/U 9.5 | 50% |
| US Open WTA: Maja Chwalinska vs Taylor Townsend Set 2 O/U 9.5 | 50% |
| US Open WTA: Maja Chwalinska vs Taylor Townsend Set 1 O/U 10.5 | 50% |
| US Open WTA: Maja Chwalinska vs Taylor Townsend Set 2 O/U 10.5 | 50% |
| US Open WTA: Maja Chwalinska vs Taylor Townsend Game Spread +/-3.5 | 50% |
| US Open WTA: Maja Chwalinska vs Taylor Townsend Match O/U 23.5 | 49% |
| US Open WTA: Maja Chwalinska vs Taylor Townsend Match O/U 21.5 | 44% |
| US Open WTA: Maja Chwalinska vs Taylor Townsend Match O/U 22.5 | 38% |
| US Open WTA: Maja Chwalinska vs Taylor Townsend Set 2 Winner | 33% |
| US Open WTA: Maja Chwalinska vs Taylor Townsend Total Sets: O/U 2.5 | 31% |
| US Open WTA: Maja Chwalinska vs Taylor Townsend | 20% |
| US Open WTA: Maja Chwalinska vs Taylor Townsend Set 1 Winner | 19% |
Market context
US Open WTA: Maja Chwalinska vs Taylor Townsend — current market-implied probability: 61%. This market refers to the tennis match between Maja Chwalinska and Taylor Townsend in the US Open WTA, originally scheduled for August 30, 2026 at 11:00AM ET. This market will resolve to 'Maja Chwali…
Methodology
This page compares US Open WTA: Maja Chwalinska vs Taylor Townsend 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
Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.
UK Frequently Asked Questions
- Polymarket vs Kalshi — which is better?
- Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.
- Is Betfair a Polymarket alternative?
- Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.
- 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.
- 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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