Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Review UK) Pick polygram.ink (preferred broker) |
43% | 57% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
43% | 57% | 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 |
|---|---|
| December 31 | 43% |
| October 31 | 23% |
| August 31 | 12% |
| June 30 | 0% |
| May 31 | 0% |
Market context
A mutually agreed suspension of direct military engagement between Russia and Ukraine remains the core real-world event underpinning this market, with current crowd-implied probability sitting at 41% for a ceasefire by the end of 2026. Historically, such truces have been fragile; the 2014 Minsk agreement was broken within hours, and a 2015 ceasefire in eastern Ukraine failed to halt a conflict that displaced over 1.5 million civilians[1]. Even a recent three-day pause announced by President Trump in May 2025, which included a prisoner swap, did not lead to lasting stability, as Russia has violated 25 ceasefire deals since 2014[2][7]. This pattern of broken promises suggests that a 41% probability reflects a realistic but cautious assessment of diplomatic momentum rather than optimism.
For a power-user approaching this programmatically, the key catalysts to monitor are official announcements from both capitals, scheduled diplomatic summits, and dependencies such as US intelligence-sharing resumption tied to ceasefire pledges[4]. Recent reporting notes that the Kremlin has shown no indication of agreeing to unconditional ceasefire calls, despite Ukraine’s acceptance[3]. Conditional orders should be triggered by verified consensus from credible reporting confirming mutual agreement, as broader peace frameworks or humanitarian pauses qualify only if they include a mutually agreed suspension of fighting[5]. Traders must watch for snap-back provisions in any draft agreement, which would allow rapid sanction reimposition if Russia violates terms, a feature critical for long-term security[5].
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
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.
FAQ
- 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.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- 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.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Review UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
- 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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