Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi Fees) 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 | 78% |
| August 20 | 46% |
| August 21 | 46% |
| August 19 | 40% |
| August 18 | 25% |
| August 14 | 6% |
Market context
Kai Cenat and IShowSpeed are running another hardcore Minecraft marathon, with Kai’s Twitch channel expected to carry the live broadcast and the market settling on the time that stream actually stops. The key mechanical point for programmatic tracking is that the market is about *Kai’s Twitch stop time*, not whether the game is beaten on a secondary feed, so automated monitoring should watch for the Twitch livestream ending and then confirm there is no restart within the 12-hour hold window. [15][16]
The last comparable marathon is the main guide here: their 2024 run lasted roughly 105–106 hours, included 42 deaths and repeated resets, and ended only when they finally defeated the Ender Dragon after several days live. That history implies the current 6% crowd price is treating a near-term finish as unlikely, especially if the new format again stretches to multiple bosses rather than a single objective. [1][3][10][13]
For catalysts, the highest-signal variables are the creators’ own schedule changes, any on-stream sign that the objective has narrowed or been completed, and whether the Twitch feed is paused, switched, or fully offline before the settlement window closes. Recent coverage ahead of the run said it was due to go live on 7 August at 5 p.m. ET and warned that the challenge could run for days, while another report said the finish line had been moved back to multiple bosses, which would materially lengthen the expected duration and matter for conditional-order positioning. [15][16]
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
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.
FAQ
- 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.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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