Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Today) Pick polygram.ink (preferred broker) |
87% | 13% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
87% | 13% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| August 31 | 87% |
| August 26 | 79% |
| August 21 | 50% |
| August 20 | 46% |
| August 19 | 40% |
| August 18 | 26% |
| August 14 | 6% |
Market context
Kai Cenat and IShowSpeed’s latest Minecraft marathon has just gone live, and the key change is that the finish line is much further away than in their 2024 run. The market is pricing only a small chance that Kai’s Twitch broadcast ends before 31 August, which reflects how open-ended these streams can become once the pair are locked into hardcore rules and a shared world. [16][17]
The main historical guide is their previous hardcore marathon, which stretched to about 105 hours across multiple streams before they finally beat the Ender Dragon after 42 deaths and several restarts. That is the closest comparable case, and it shows both the duo’s willingness to keep going and the fact that completion can still arrive far later than early expectations. A short, clean ending is possible, but their track record argues against treating the scheduled start date as anything like a one-day event. [2][4][13]
The catalysts to watch are straightforward: an on-stream victory, a deliberate stop from Kai’s Twitch channel, or a decision to pause and resume within 12 hours, which would keep the market open rather than settle it. Recent coverage says the new marathon began on 7 August at 5pm ET and that its end time is uncertain, with one preview even noting it could run for days if the pair repeat the previous pace. Any schedule changes, technical interruptions, or a shift in the challenge rules would matter because this market resolves on when Kai’s Twitch broadcast of the marathon actually ends. [16][17]
Methodology
This page reviews Kai and Speed finish their Minecraft marathon by 2026? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Prediction Today, which mirrors the Polymarket order book at 0% fees.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
UK Frequently Asked Questions
- 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.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- 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 Prediction Today
Live order book, 0% fees, USDC settlement in seconds.
Open live market →