Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets) Pick polygram.ink (preferred broker) |
97% | 3% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
97% | 3% | 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 | 97% |
| August 15 | 96% |
| July 31 | 94% |
| July 19 | 0% |
| July 21 | 0% |
| July 24 | 0% |
Market context
The market tracks whether the United States will formally announce a halt to offensive military operations against Iran by the end of August 2026. Such an announcement would need to come from the US government or an authorised representative and explicitly communicate cessation, suspension, or ceasefire of offensive actions. The 0% implied probability reflects the current absence of any diplomatic pathway or political momentum toward such a declaration, with no active negotiations or ceasefire talks between Washington and Tehran.
Comparable historical cases offer limited precedent for rapid reversal in US-Iran military posture. The 2015 Joint Comprehensive Plan of Action represented a diplomatic breakthrough but did not involve a formal cessation announcement during active hostilities. The 2020 Soleimani assassination and subsequent Iranian retaliation demonstrated how quickly tensions can escalate without formal announcements of operational changes. More relevant are instances where the US has publicly announced military operation conclusions—such as the 2021 withdrawal from Afghanistan or the 2011 Iraq drawdown—though these involved different regional actors and political contexts.
Traders should monitor several potential catalysts through August 2026: shifts in US presidential administration or congressional pressure, major escalations or de-escalations in regional proxy conflicts, Iranian nuclear programme developments affecting diplomatic calculus, and any formal peace negotiations brokered by third parties. Recent reporting from Reuters and AP News indicates no active backchannel discussions as of late 2024, though geopolitical circumstances can shift rapidly. The extended settlement window suggests market creators anticipated low near-term probability but recognised tail-risk scenarios where diplomatic breakthroughs could materialise unexpectedly.
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
- 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 Best Prediction Markets. 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.
- 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.
Trade US announces halt in Iran offensive operations by 2026? on Best Prediction Markets
Live order book, 0% fees, USDC settlement in seconds.
Open live market →