Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Robinhood Prediction Markets) Pick polygram.ink (preferred broker) |
68% | 32% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Go to the live market → |
Polymarket (direct) polymarket.com |
68% | 32% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Go to the live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Go to the live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Go to the live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Go to the live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| December 31, 2027 | 68% |
| June 30, 2027 | 54% |
| December 31, 2026 | 3% |
Market context
SpaceX and Geometric Energy Corporation's Doge-1 mission aims to place a 12U CubeSat into lunar orbit, carrying Dogecoin blockchain nodes as a payload. The satellite must successfully launch from its designated pad by 31 December 2026 to trigger a "Yes" resolution, with launch verification drawn from official SpaceX footage and corroborating sources. Post-launch anomalies, including in-flight failures, do not affect the outcome—only whether the vehicle clears the pad within the settlement window.
Historical precedent suggests modest scepticism is warranted. SpaceX's Starship programme has experienced multiple launch delays and pad aborts since 2023, whilst secondary payload missions frequently slip by six to eighteen months beyond initial targets. The Doge-1 mission has already experienced schedule shifts since its 2021 announcement; comparable small-satellite lunar ventures (including NASA's Artemis-adjacent CubeSats) have faced repeated deferrals. The current 54% implied probability across prediction markets reflects this uncertainty, though odds vary materially by platform—Polymarket's decimal format (1.85–2.15) and Kalshi's binary structure produce different fee drag, whilst Betfair's commission-based model and Smarkets' lower-fee structure create arbitrage opportunities for cross-platform traders. KYC requirements differ significantly: Kalshi enforces stricter US residency verification than Polymarket's lighter approach.
Key catalysts include SpaceX's Starship flight-readiness announcements, Federal Communications Commission licensing updates for the payload, and Geometric Energy's public mission timeline revisions. Recent industry reporting indicates SpaceX's 2025–2026 manifest remains congested with Starlink deployments and government contracts, potentially compressing secondary payload windows. Traders should monitor quarterly SpaceX updates and any formal mission delay notices from either party.
Methodology
This page compares Will the Doge-1 Lunar Mission launch by 2027? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Robinhood Prediction Markets, which mirrors the Polymarket order book at 0% fees.
Resolution & payout
Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.
Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.
FAQ
- What does Polymarket cost vs Kalshi?
- Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.
- Which platform has the deepest liquidity?
- Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.
- Is Betfair a Polymarket alternative?
- Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.
- Are all these platforms regulated?
- No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.
- Which platform supports Klarna/SOFORT?
- Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.
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