Polymarket vs. Kalshi
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See where the two biggest prediction markets disagree. Pick any two markets, or start from the biggest gaps below: prices, volume, history and the resolution rules, side by side.
Will Zelenskyy and Putin meet next in Switzerland before 2027?
Vol $6.1K today · $253.9K total
Will Trump, Xi and Putin meet together before Jan 1, 2027?
Vol $152 today · $21.9K total
Kalshi is 63 points higher than Polymarket (64% vs 0%). Polymarket trades about 40× more volume today, so its price has more money behind it.
History starts when we first saw each market, so a newly added market has a short line.
| Polymarket | Kalshi | |
|---|---|---|
| Probability (Yes) | 0% | 64% |
| Change (24h) | +0.0 pt | +2.0 pt |
| Volume today | $6.1K | $152 |
| Total volume | $253.9K | $21.9K |
| Liquidity | $64.4K | — |
| Open interest | — | $16.8K |
| Resolves | 65d | 65d |
| Tracked for | 7 days | 19 days |
Resolution rules: read both before trusting a gap
Polymarket
This market will resolve according to the location of the next meeting between Volodymyr Zelenskyy and Vladimir Putin by December 31, 2026, 11:59 PM ET. If no meeting takes place by December 31 ET, this market will resolve to "No meeting before 2027". A meeting is defined as any encounter where Zelenskyy and Putin are both present and interact with each other in person. For the purpose of this market, a meeting held on Ukrainian territory under the de facto control of Russia (e.g., Crimea) will be considered part of Russia. The primary resolution source for this market will be a consensus of credible reporting.
Kalshi
If Donald Trump and Xi Jinping and Vladimir Putin meet in person together in the same trilateral meeting after Issuance and before Jan 1, 2027, then the market resolves to Yes.
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Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.