Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi Alternative UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 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 |
|---|---|
| Roehampton 2: Max Basing vs Christian Langmo | 100% |
| Completed Match | 100% |
| Roehampton 2: Max Basing vs Christian Langmo Set 1 O/U 8.5 | 100% |
| Roehampton 2: Max Basing vs Christian Langmo Set 1 Winner | 100% |
| Roehampton 2: Max Basing vs Christian Langmo Set 2 Winner | 100% |
| Roehampton 2: Max Basing vs Christian Langmo Set Handicap +/-1.5 | 100% |
| Roehampton 2: Max Basing vs Christian Langmo Set 2 O/U 8.5 | 100% |
| Roehampton 2: Max Basing vs Christian Langmo Set 2 O/U 9.5 | 100% |
| Roehampton 2: Max Basing vs Christian Langmo Total Sets: O/U 2.5 | 0% |
| Roehampton 2: Max Basing vs Christian Langmo Match O/U 21.5 | 0% |
| Roehampton 2: Max Basing vs Christian Langmo Set 1 O/U 9.5 | 0% |
| Roehampton 2: Max Basing vs Christian Langmo Set Handicap +/-1.5 | 0% |
| Roehampton 2: Max Basing vs Christian Langmo Match O/U 22.5 | 0% |
| Roehampton 2: Max Basing vs Christian Langmo Set 1 O/U 10.5 | 0% |
| Roehampton 2: Max Basing vs Christian Langmo Set 2 O/U 10.5 | 0% |
| Roehampton 2: Max Basing vs Christian Langmo Match O/U 23.5 | 0% |
Market context
The Roehampton 2: Max Basing vs Christian Langmo prediction market currently prices this outcome at 100% YES. This market refers to the tennis match between Max Basing and Christian Langmo in the Roehampton 2, originally scheduled for August 24, 2026 at 9:00AM ET. This market will resolve to 'Max Basing' if …
Methodology
We read Roehampton 2: Max Basing vs Christian Langmo from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.
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
- 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.
- Which platform has the deepest liquidity?
- Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.
- 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.
- 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.
Trade Roehampton 2: Max Basing vs Christian Langmo on Kalshi Alternative UK
Live order book, 0% fees, USDC settlement in seconds.
Open live market →