Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Today) 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 | 93% |
| July 19 | 0% |
| July 21 | 0% |
| July 24 | 0% |
Market context
The 0% probability reflects the absence of any credible reporting suggesting imminent US military de-escalation with Iran. As of late August 2026, US military posture remains active across the Middle East, with no official statements indicating a shift toward ceasefire negotiations or operational suspension. The market's settlement window extends through end-August 2026, leaving roughly two months for a formal announcement—a timeframe that would require either a dramatic diplomatic breakthrough or a significant shift in regional conflict dynamics.
Historical precedent offers limited direct comparison. The US has announced military operation cessations in Iraq and Afghanistan, but these followed years of declared combat missions and involved formal withdrawal timelines rather than sudden halts. Iran-specific military engagements have typically escalated or de-escalated through tit-for-tat strikes rather than negotiated cessations. The 2015 Joint Comprehensive Plan of Action represented diplomatic progress but never constituted an announcement of halted offensive operations, as direct military confrontation had remained limited before its collapse in 2018.
Traders monitoring this market should track statements from the US State Department, Department of Defence, and presidential communications regarding Iran policy. Any announcement of direct negotiations, ceasefire talks, or UN-mediated discussions would signal potential movement. Regional developments—including Houthi activity, Israeli-Iranian tensions, or Iraqi government positions—could force US strategic recalibration. Press conferences following National Security Council meetings or statements during UN General Assembly sessions represent likely venues for such announcements, though the compressed timeframe makes resolution before August 2026 highly contingent on unforeseen geopolitical rupture.
Methodology
We track US announces halt in Iran offensive operations 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
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
- 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 Prediction Today 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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