Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Kalshi UK Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Kalshi UK → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Kalshi UK → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Kalshi UK → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Kalshi UK → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Kalshi UK → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on Kalshi UK.
Active sub-markets
Market context
The Polymarket contract pricing a direct diplomatic meeting between US and Iranian officials by end-April 2026 sits at 0% implied probability, reflecting near-zero conviction that such an encounter will occur within the settlement window. This valuation assumes no scheduled talks, no active negotiation track, and no imminent diplomatic breakthrough—a baseline consistent with the current state of US-Iran relations, where official channels remain largely dormant following the 2018 US withdrawal from the Joint Comprehensive Plan of Action.
Historical precedent suggests the 0% pricing may underweight tail-risk scenarios. The last substantive direct US-Iran diplomatic engagement occurred during the 2015 JCPOA negotiations, which required years of preliminary confidence-building and Swiss-mediated talks before formal meetings materialised. The 2016 prisoner swap involved indirect coordination rather than formal diplomatic sessions. Even during periods of heightened tension—the 2020 Soleimani assassination and subsequent Iranian retaliation—no direct talks materialised, though back-channel communications persisted through third parties including Oman and Iraq.
Traders monitoring this contract should track three variables: shifts in US presidential policy toward Iran (particularly relevant given the 2024 election cycle and any 2025 administration changes), Iranian domestic political developments that might alter Tehran's negotiating posture, and regional flashpoints—Israeli-Iranian escalation, Gulf security incidents, or nuclear programme developments—that could force emergency diplomatic contact. Recent reporting from Reuters and AP News indicates no scheduled talks or active diplomatic initiatives as of late 2024, though unforeseen crises have historically compressed timelines for emergency negotiations.
Methodology
This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Kalshi UK, which mirrors the Polymarket order book directly.
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'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?
- Not under $1,500 of lifetime trading volume. Above that threshold, Kalshi UK triggers a quick verification flow that finishes in 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 x Iran diplomatic meeting by 2026? on Kalshi UK
Live order book, 0% fees, USDC settlement in seconds.
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