Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
57% | 43% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
57% | 43% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Any Player Rampage | 57% |
| Ends in Daytime | 51% |
| Any Player Ultra Kill | 51% |
| Any Player Ultra Kill | 51% |
| Any Player Ultra Kill | 51% |
| Both Teams Beat Roshan | 50% |
| Both Teams Destroy Barracks | 50% |
| Ends in Daytime | 50% |
| Both Teams Beat Roshan | 50% |
| Both Teams Destroy Barracks | 50% |
| Ends in Daytime | 50% |
| Both Teams Beat Roshan | 50% |
| Both Teams Destroy Barracks | 50% |
| O/U 2.5 Games | 47% |
| Game 2 Winner | 43% |
| Game 1 Winner | 42% |
| Game Handicap: FLC (-1.5) vs Nigma Galaxy (+1.5) | 36% |
| Match Winner | 35% |
| Any Player Rampage | 21% |
| Any Player Rampage | 15% |
Market context
Nigma Galaxy and Team Falcons will contest a Dota 2 Upper bracket quarterfinal at The International 2026 on 20 August, with the winner advancing directly to the semi-finals. The match is scheduled for 07:00 ET and will be played as a best-of-three series. Current crowd pricing at 39% for Nigma Galaxy implies Team Falcons are favoured, reflecting their recent tournament trajectory and regional strength heading into the event.
Nigma Galaxy's historical performance at The International provides the primary reference point for calibrating expectations. The organisation has reached multiple International finals and consistently fields rosters capable of deep playoff runs, though recent seasons have seen inconsistent results across regional qualifiers. Team Falcons emerged as a formidable Middle East and North Africa representative, with strong showings in regional competitions and international LANs throughout 2025 and early 2026. The 39% probability suggests the market views this as a competitive matchup with Falcons holding marginal edge, consistent with their recent form relative to Nigma's variable performance.
Traders should monitor roster confirmations and any last-minute substitutions until the settlement window closes on 20 August at 17:00 ET, as player availability can shift match dynamics substantially. The International's official schedule and bracket announcements will confirm exact match timing; any postponement must be rescheduled by 3 September 23:59 ET for the market to remain valid. Funding rates on major crypto exchanges may reflect broader esports betting sentiment, though Dota 2 match outcomes typically show limited correlation with BTC or ETH macro movements. Watch for official patch notes released before the event, as balance changes can favour particular team strategies.
Methodology
Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
UK Frequently Asked Questions
- Why USDC and not ETH or USDT?
- USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.
- What does a transaction cost on Polygon?
- Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
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