Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Bot UK) Pick polygram.ink (preferred broker) |
87% | 13% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Place a position → |
Polymarket (direct) polymarket.com |
87% | 13% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Place a position → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Place a position → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Place a position → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Place a position → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| August 31 | 87% |
| August 26 | 79% |
| August 20 | 46% |
| August 21 | 46% |
| August 19 | 40% |
| August 18 | 25% |
| August 14 | 6% |
Market context
Kai Cenat and IShowSpeed are set to run a Hardcore Minecraft marathon that starts live on 7 August at 5pm ET, with the stream continuing until the challenge is completed. For this market, the practical question is not whether they *beat* the game, but whether Kai’s Twitch broadcast ends and then stays off for at least 12 hours before the settlement window closes.
The prior comparable case points to very long runtimes rather than quick exits. In 2024, the pair’s Hardcore Minecraft run stretched to roughly 105–106 hours, with multiple resets before they finally defeated the Ender Dragon, and coverage noted 42 deaths across the marathon.[2][3][5][12] That history matters for reading the current 6% implied probability: even when the pair have a defined objective, these sessions have tended to become multi-day broadcasts rather than short, easily time-bounded streams.[3][12][13] Programmatically, a trader would model this more like a “live-until-completion” event than a fixed-duration show.
The key catalysts are straightforward to monitor: official start-time posts, any trailer or schedule changes, visible pauses on Kai’s Twitch channel, and whether the duo announce a split, delay, or end condition revision.[15][16] The latest pre-run write-ups state there was no announced finish line and that the stream was intended to stay live until all required bosses were dead, which pushes the edge cases onto runtime and continuity rather than game completion alone.[15][16] In tooling terms, the watchlist is a channel-status feed plus timestamped restart detection, because a brief offline gap followed by a return within 12 hours would keep the market leaning “No”.
Methodology
We track Kai and Speed finish their Minecraft marathon by 2026? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
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 Polymarket Bot UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- 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%.
Trade Kai and Speed finish their Minecraft marathon by 2026? on Polymarket Bot UK
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