Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi vs Polymarket) Pick polygram.ink (preferred broker) |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Market context
The United States and Iran formalised a memorandum of understanding on 14 June 2026 that established a 60-day window for negotiating a comprehensive final agreement on nuclear and sanctions matters. Both parties retain the right to extend this period by mutual consent. The market tests whether officials from Washington and Tehran will jointly announce such an extension before the August deadline. Current crowd-implied probability stands at 4% YES, suggesting traders assess an extension as highly unlikely within the settlement window.
Historical precedent offers mixed signals for interpreting this low probability. The 2015 Joint Comprehensive Plan of Action (JCPOA) negotiations extended multiple times before reaching final agreement, with both sides publicly announcing delays when diplomatic progress warranted additional time. Conversely, the Trump administration's 2018 withdrawal and subsequent years of failed negotiations suggest that formal extension announcements are not automatic when talks stall. The 4% reading reflects scepticism that either party will formally declare an extension rather than allow the period to lapse or pursue talks informally without triggering a market-qualifying announcement.
Traders should monitor official statements from the US State Department and Iranian Foreign Ministry for any joint communiqué announcing extension terms. The settlement window closes 20 August 2026, creating a hard deadline for qualifying announcements. Key dependencies include progress on sanctions relief mechanisms and uranium enrichment limits—areas where previous rounds have produced public deadlines and extensions. Any breakdown in talks before mid-August would likely preclude an extension announcement, whilst breakthrough progress might prompt both sides to formalise additional negotiating time.
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 Kalshi vs Polymarket, 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
- 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.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi vs Polymarket 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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