Two platforms, thousands of markets, different odds. Compare Polymarket and Kalshi in real-time to find the best prices and spot arbitrage opportunities.
Last updated: Nov 11, 2026 at 14:45 UTC
Current odds from Polymarket, updated every 10 minutes. Volume shows real money at stake.
| Market | Top Odds | Total Volume | 24h Volume |
|---|---|---|---|
| Counter-Strike: MOUZ vs G2 (BO3) - BLAST Rivals Gr | 100% | $5.7M | $5.6M |
| Heat vs. Jazz | 100% | $5.8M | $5.5M |
| Thunder vs. Trail Blazers | 100% | $4.2M | $4.1M |
| Counter-Strike: Spirit vs FUT Esports (BO3) - BLAS | 100% | $4.4M | $4.0M |
| Celtics vs. 76ers | 100% | $3.7M | $3.6M |
| Bucks vs. Knicks | 100% | $3.4M | $3.3M |
| Magic vs. Kings | 100% | $3.1M | $3.0M |
| Fed Decision in December? | 86% | $25.4M | $2.9M |
| Counter-Strike: Vitality vs Team Falcons (BO3) - B | 100% | $2.0M | $1.9M |
| WTA Finals, Group A: Coco Gauff vs Linda Noskova | 100% | $1.5M | $1.5M |
| Clippers vs. Suns | 100% | $1.5M | $1.4M |
| Counter-Strike: Legacy vs FURIA (BO3) - BLAST Riva | 100% | $1.6M | $1.4M |
| Fed Decision in January? | 54% | $2.7M | $1.2M |
| LoL: Ground Zero Gaming vs Frank Esports (BO5) - L | 100% | $1.1M | $1.1M |
| Ohio vs. Miami (OH) | 100% | $1.1M | $1.1M |
| Feature | Polymarket | Kalshi |
|---|---|---|
| Founded | 2020 | 2021 |
| Regulation | Unregulated (crypto) | CFTC-regulated |
| Currency | USDC (Polygon) | USD |
| Trading Fees | 0% | ~2% on winnings |
| Total Markets | 10,000+ | 2,000+ |
| Total Volume (all time) | $20B+ | $3B+ |
| Availability | Global (crypto wallet) | US only (42+ states) |
| Deposit Methods | Crypto wallet (USDC) | Bank, debit card, crypto |
| Min Bet | $1 | $1 |
| Max Bet | No limit | $25,000 typical |
| Mobile App | iOS + Android | iOS + Android |
| API Access | Free, comprehensive | Limited |
| Category Strength | Crypto, politics, culture | Economics, politics, weather |
When Polymarket and Kalshi show different prices for the same event, an arbitrage opportunity exists. For example, if Polymarket prices "Event X" at 60¢ YES and Kalshi prices it at 72¢ YES, the 12¢ difference suggests one platform's crowd may be wrong.
Experienced traders watch for these cross-platform gaps and bet on the platform offering better value. Gaps of 5-15¢ are common during breaking news or volatile events.
PredScope tracks these differences automatically, updating every 10 minutes with the latest Polymarket data.
Polymarket is a crypto-based prediction market with zero trading fees and global access. It uses USDC on the Polygon network. Kalshi is a CFTC-regulated platform based in the US, accepting USD deposits. Polymarket typically has higher liquidity and more markets, while Kalshi offers regulatory protection for US traders.
Kalshi is generally easier for US-based beginners because it accepts bank deposits and credit cards without requiring crypto knowledge. Polymarket requires a crypto wallet and USDC, but once set up, offers a simpler trading interface and zero fees.
Yes. When platforms show different prices for the same event, traders can potentially profit from the difference. Price gaps of 5-15¢ occur regularly, especially during breaking news. However, arbitrage requires capital on both platforms and careful risk management.
Research shows prediction markets with significant liquidity (>$100K volume) are generally well-calibrated, with median forecast errors of 3-5%. Markets with higher volume tend to be more accurate because more informed traders participate. When platforms disagree significantly, the one with more liquidity is usually more accurate.