Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets) Pick polygram.ink (preferred broker) |
99% | 1% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
99% | 1% | 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 |
|---|---|
| September 30, 2026 | 99% |
| December 31, 2026 | 99% |
| August 31, 2026 | 97% |
| May 31, 2026 | 0% |
| August 31 | 0% |
| December 31 | 0% |
| October 31 | 0% |
| July 31, 2026 | 0% |
| September 30 | 0% |
| July 19, 2026 | 0% |
| August 15, 2026 | 0% |
| November 30 | 0% |
| March 31, 2026 | 0% |
| January 31, 2026 | 0% |
| February 28, 2026 | 0% |
| June 30, 2026 | 0% |
| April 30, 2026 | 0% |
Market context
Russia capturing Kostyantynivka would mean taking a key Donetsk strongpoint on the road towards Kramatorsk and Sloviansk, not just another small settlement. Reuters described the city as part of Ukraine’s eastern “fortress belt”, with Russian forces grinding into the area while wider gains along the front have been more limited[3][5]. Against that backdrop, a crowd-implied **0% YES** looks far below the operational significance of the target, but it may also reflect how hard it is to distinguish a near-total encirclement from formal capture in a live war market.
The historical frame is one of attritional advances rather than rapid collapses. The fortress belt has been fortified for years and analysts have repeatedly argued that even a serious breach would be tactically important but not automatically decisive for the wider Donbas front[2][11]. Reuters reported in late June that Russian gains around Kostyantynivka were continuing, yet also noted that advances elsewhere on the 1,200-kilometre line had largely stalled[3]. That makes analyst consensus more nuanced than a binary price suggests: the city matters, but the time required for a clean capture can still outrun market expectations.
The main catalysts are battlefield map changes, not formal announcements. Traders should watch for reports of Russian control of key access roads, the railway hub, or the southern urban approaches, because those would be the clearest indicators of whether the city is being isolated or actually taken[8][10]. Reuters’ 29 June update and its earlier 2 May report both pointed to steady Russian pressure on the outskirts, which is the sort of incremental progress that can shift implied odds quickly if verified by subsequent front-line reporting[3][5]. Any sudden move in military-source maps, local official statements, or Russian claims of seizure would be the most important cross-platform triggers for a repricing.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets, which mirrors the Polymarket order book directly.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
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 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 Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
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