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 Italy / Vatican before 2027?
Vol $5K today · $144.6K total
Kalshi is 18 points higher than Polymarket (19% vs 0%). Polymarket trades about 629.1× more volume today, so its price has more money behind it. They resolve on different dates (Jan 1 vs Dec 31), so they may not be exactly the same bet.
History starts when we first saw each market, so a newly added market has a short line.
| Polymarket | Kalshi | |
|---|---|---|
| Probability (Yes) | 0% | 19% |
| Change (24h) | -0.1 pt | -3.5 pt |
| Volume today | $5K | $8 |
| Total volume | $144.6K | $13.4K |
| Liquidity | $62.8K | — |
| Open interest | — | $5.1K |
| Resolves | 69d | 27mo |
| Tracked for | 2 days | 14 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 the next Putin and Zelenskyy meeting happens in Turkey before Dec 31, 2028, 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.