Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi Alternative UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 8 | 100% |
| ≤5 | 0% |
| 6 | 0% |
| 7 | 0% |
| 9 | 0% |
| 10 | 0% |
| 11 | 0% |
| 12+ | 0% |
Market context
Waymo’s ride-hailing service is actively expanding across the United States and into Europe, with public availability now confirmed in ten cities and further launches scheduled through 2026. The company currently operates fully autonomous 24/7 services in Atlanta, Austin, San Francisco, Los Angeles, and Phoenix, while recently adding Dallas, Houston, San Antonio, and Orlando to its public roster. Miami and Nashville are also in advanced testing phases, with public launches expected later this year, and Las Vegas is slated for summer 2026. London marks Waymo’s first European city, though initial operations will use human drivers before transitioning to full autonomy by 2026.
Historically, robotaxi deployments have followed a rapid scaling pattern once regulatory hurdles are cleared, as seen with Waymo’s jump from five to ten cities in early 2026. This trajectory suggests the current 0% implied probability on Polymarket for “more than zero cities” is a mispricing, especially when compared to Kalshi’s decimal odds framework which better reflects real-world expansion momentum. Platforms like Betfair and Smarkets diverge here by focusing on implied probability rather than raw odds, potentially obscuring the speed of Waymo’s rollout. Fee structures also vary: Polymarket charges no fees for small trades, while Kalshi imposes a 1% fee, and Betfair/Smarkets apply commission only on winnings, affecting trader returns on high-probability outcomes.
Traders should monitor Waymo’s official city updates page and CES 2026 announcements for confirmation of Las Vegas, San Diego, and Washington, D.C. launches. Recent reporting from CNET confirms Las Vegas will open in summer 2026, while TechCrunch highlights Waymo’s 500,000 weekly rides across ten cities as a key catalyst for further expansion. Dependencies include UK Transport for London approvals for London’s autonomous transition and Lyft’s integration in Nashville. As these milestones approach, the divergence between Polymarket’s 0% probability and Kalshi’s more nuanced odds will likely narrow, reflecting the tangible progress in Waymo’s operational footprint.
Methodology
This page compares How many cities will Waymo operate in by June 30? 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 Kalshi Alternative UK, 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
- 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.
- What about Smarkets as an alternative?
- Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.
- Which platform is accessible globally?
- Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Kalshi Alternative UK has a different geo footprint and routes to Polymarket's order book at 0% fees.
- Which platform supports Klarna/SOFORT?
- Directly: none. Polymarket accepts only USDC on Polygon. Kalshi Alternative UK 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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