Who will attend a round of US-Iran peace talks by December 31?

Platform comparison

Market context

The question hinges on whether a formal, in-person diplomatic round between senior US and Iranian officials occurs within the next two years. Polymarket currently prices this at 12% on USDC via Polygon, reflecting substantial scepticism that either government will commit to structured peace negotiations by end-2026. The settlement criteria demand deliberate senior-level talks with official capacity and material authority—not backchannel contacts, UN General Assembly encounters, or statements through intermediaries. This specificity matters for traders: a single round qualifies, but the bar for "formal" and "senior" excludes lower-level technical meetings or unilateral announcements.

Historical precedent suggests the probability reflects genuine structural barriers. The 2015 Joint Comprehensive Plan of Action (JCPOA) took years of preliminary talks before formal rounds began; the Trump administration's 2018 withdrawal and subsequent maximum-pressure campaign fractured diplomatic channels. Since 2021, despite the Biden administration's stated willingness to re-enter nuclear talks, no formal round has materialised. The 2024 US election outcome and Iran's domestic political calendar through 2026 introduce further uncertainty—both governments would need to signal intent simultaneously, a rare alignment.

Traders should monitor three catalysts: announcements from the US State Department or Iranian Foreign Ministry regarding diplomatic initiatives; any shift in sanctions policy that might create negotiating space; and developments around the nuclear programme that could force either side back to the table. Recent reporting from Reuters and AP News indicates no scheduled talks, though diplomatic channels remain technically open. The 12% pricing reflects that while talks remain possible—particularly if regional tensions spike or domestic political calculations shift—the structural impediments remain formidable.

Methodology

This page reviews Who will attend a round of US-Iran peace talks by December 31? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.

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?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram 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.