Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
73% | 27% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
73% | 27% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Jared Kushner | 73% |
| Steve Witkoff | 69% |
| Abbas Araghchi | 59% |
| Mohammad Bagher Ghalibaf | 51% |
| Majid Takht-Ravanchi | 49% |
| J.D. Vance | 48% |
| Mohammed bin Abdulrahman Al Thani | 48% |
| Marco Rubio | 43% |
| Masoud Pezeshkian | 40% |
| Ishaq Dar | 34% |
| Rafael Grossi | 34% |
| Kazem Gharibabadi | 21% |
| Nick Stewart | 20% |
| Badr bin Hamad Al Busaidi | 16% |
| Donald Trump | 12% |
| Esmail Qaani | 12% |
| Pete Hegseth | 6% |
| Ahmad Vahidi | 6% |
| Mojtaba Khamenei | 5% |
Market context
Formal diplomatic talks between senior US and Iranian officials remain absent as of late 2024, with bilateral relations defined by sanctions, proxy conflicts, and rhetorical hostility rather than negotiating rounds. The 2015 Joint Comprehensive Plan of Action (JCPOA) collapsed under the Trump administration in 2018, and subsequent attempts at indirect engagement through intermediaries—including Oman and Iraq—have yielded no structured peace dialogue. The current 12% implied probability reflects the structural difficulty of convening such talks within a 24-month window, given the absence of preconditions both sides have historically demanded.
Historical precedent suggests peace talks require either a major geopolitical shift or mutual exhaustion from conflict. The 2013–2015 JCPOA negotiations took years to arrange and involved multiple intermediaries before senior officials met. More recently, the 2023 China-brokered Saudi–Iran agreement showed that third-party mediation can accelerate diplomatic breakthroughs, though it stopped short of US involvement. A US administration change in January 2025 could alter calculus; both Democratic and Republican camps have signalled willingness to engage Iran under different conditions, though neither has committed to formal peace rounds.
Traders should monitor announcements from the US State Department, Iranian Foreign Ministry, and potential mediators including Qatar, Oman, and the UN. Any escalation in regional tensions—particularly around Yemen, Iraq, or Israel—typically hardens positions and reduces diplomatic appetite. Conversely, economic pressure from oil sanctions or internal Iranian political transitions could create openings. News from Reuters and AP on diplomatic channels will provide early signals; the market's 12% pricing suggests traders view such talks as unlikely absent a significant catalyst before end-2026.
Methodology
This page reads Who will attend a round of US-Iran peace talks by December 31? on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
UK Frequently Asked Questions
- What are crypto prediction markets?
- Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.
- What does a transaction cost on Polygon?
- Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
Trade Who will attend a round of US-Iran peace talks by De… on BTC Prediction
Live order book, 0% fees, USDC settlement in seconds.
Open live market →