Live cross-venue aggregator

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Cross-venue prediction-market intelligence. Polymarket and Kalshi side-by-side, categorized, refreshed every minute. LLM-matched pairs surface the same market across both venues so spreads are one glance away.

See live markets ↓
Prediction Markets RWA Stocks Portfolio
Live · 5-second polling

Live Crypto Markets — 15-min up/down

7 assets, both venues, side-by-side. Probabilities update every 5 seconds from each venue's order book. Spread column highlights the gap between Polymarket and Kalshi.

Current round closes in
—
Updated 22:56:09Z · polling…
Asset Polymarket Kalshi Spread Open
BTC · 15m
✓ on both venues
40.5%
Down 59.5%
39.5%
Down 60.5%
1.0 pp
P↗ K↗
ETH · 15m
✓ on both venues
16.5%
Down 83.5%
19.5%
Down 80.5%
3.0 pp
P↗ K↗
SOL · 15m
✓ on both venues
55.0%
Down 45.0%
53.5%
Down 46.5%
1.5 pp
P↗ K↗
XRP · 15m
✓ on both venues
47.0%
Down 53.0%
50.0%
Down 50.0%
3.0 pp
P↗ K↗
DOGE · 15m
✓ on both venues
75.0%
Down 25.0%
73.5%
Down 26.5%
1.5 pp
P↗ K↗
BNB · 15m
✓ on both venues
24.5%
Down 75.5%
26.5%
Down 73.5%
2.0 pp
P↗ K↗
HYPE · 15m
✓ on both venues
4.0%
Down 96.0%
5.5%
Down 94.5%
1.5 pp
P↗ K↗
Polymarket: {asset}-updown-15m events · Kalshi: KX{ASSET}15M series. Mid-price from each venue's order book (bid/ask spread). Updates every 5 seconds.
Aggregator

Prediction Market Aggregator

Side-by-side coverage of Polymarket and Kalshi. Filter by category; click any row to open the underlying market.

Arbs scan live · pools every 5 min
pools refresh in –:––
All 1440 Politics 112 Elections 564 Crypto 44 Sports 229 Finance 73 Economy 92 Technology 62 Culture 124 Weather 48 Geopolitics 49 Esports 20 Commodities 11 Mentions 8 Other 4
Cross-venue matched markets & arbitrage
⚡ 8 arb · 8 matched Polymarket ↔ Kalshi
Every open market on both venues is matched and scanned every minute — the moment prices cross into an arb it posts here (buy the highlighted side on each venue; one leg always pays $1), arbs first, then matched markets with no current edge. Mid-price implied odds, before fees.
⚡ up to 6.5¢ / share 4 arb outcomes Geopolitics resolves 2026-12-31
Polymarket Who will Trump meet with in 2026? ↗ Kalshi Who will Donald Trump meet in 2026? ↗
OutcomePoly YESKalshi YESArbitrage
Kim Jong Un 36.5¢ 30.0¢ Buy NO@Poly 63.5¢ + Buy YES@Kalshi 30.0¢ → lock 6.5¢
Pope Leo XIV 9.5¢ 14.5¢ Buy YES@Poly 9.5¢ + Buy NO@Kalshi 85.5¢ → lock 5.0¢
Vladimir Putin 45.5¢ 42.5¢ Buy NO@Poly 54.5¢ + Buy YES@Kalshi 42.5¢ → lock 3.0¢
Nicolás Maduro 5.5¢ 7.5¢ Buy YES@Poly 5.5¢ + Buy NO@Kalshi 92.5¢ → lock 2.0¢
Mohammed bin Salman 68.5¢ 67.5¢ — no edge
Lai Ching-te 3.5¢ 4.5¢ — no edge
⚡ up to 5.1¢ / share 3 arb outcomes Elections resolves 2027-04-30
Polymarket Next French Presidential Election ↗ Kalshi Next French presidential election winner? ↗
OutcomePoly YESKalshi YESArbitrage
Marine Le Pen 31.4¢ 36.5¢ Buy YES@Poly 31.4¢ + Buy NO@Kalshi 63.5¢ → lock 5.1¢
François Hollande 3.2¢ 6.0¢ Buy YES@Poly 3.2¢ + Buy NO@Kalshi 94.0¢ → lock 2.8¢
Jean-Luc Mélenchon 13.5¢ 11.0¢ Buy NO@Poly 86.5¢ + Buy YES@Kalshi 11.0¢ → lock 2.5¢
Édouard Philippe 24.5¢ 23.0¢ — no edge
Gabriel Attal 4.8¢ 3.1¢ — no edge
Jordan Bardella 2.5¢ 3.2¢ — no edge
David Lisnard 2.9¢ 1.8¢ — no edge
Dominique de Villepin 1.8¢ 2.8¢ — no edge
Sarah Knafo 1.8¢ 2.4¢ — no edge
Bruno Retailleau 2.0¢ 1.8¢ — no edge
Sébastien Lecornu 1.6¢ 1.2¢ — no edge
⚡ up to 4.5¢ / share 2 arb outcomes Sports resolves 2027-05-30
Polymarket UEFA Champions League: 2027 Champion ↗ Kalshi Champions League Winner ↗
OutcomePoly YESKalshi YESArbitrage
Barcelona 16.5¢ 21.0¢ Buy YES@Poly 16.5¢ + Buy NO@Kalshi 79.0¢ → lock 4.5¢
Arsenal 15.5¢ 13.5¢ Buy NO@Poly 84.5¢ + Buy YES@Kalshi 13.5¢ → lock 2.0¢
Bayern Munich 13.5¢ 13.5¢ — no edge
Real Madrid 11.5¢ 12.5¢ — no edge
Manchester City 8.5¢ 8.5¢ — no edge
Liverpool 6.5¢ 6.5¢ — no edge
Manchester United 2.9¢ 4.5¢ — no edge
Napoli 0.8¢ 2.0¢ — no edge
Aston Villa 1.1¢ 1.5¢ — no edge
Sporting CP 0.7¢ 1.0¢ — no edge
⚡ up to 3.8¢ / share 3 arb outcomes Elections resolves 2028-11-07
Polymarket Republican Presidential Nominee 2028 ↗ Kalshi 2028 Republican presidential nominee ↗
OutcomePoly YESKalshi YESArbitrage
J.D. Vance 47.3¢ 43.5¢ Buy NO@Poly 52.7¢ + Buy YES@Kalshi 43.5¢ → lock 3.8¢
Ron DeSantis 1.9¢ 4.9¢ Buy YES@Poly 1.9¢ + Buy NO@Kalshi 95.1¢ → lock 3.0¢
Marco Rubio 20.3¢ 22.5¢ Buy YES@Poly 20.3¢ + Buy NO@Kalshi 77.5¢ → lock 2.2¢
Tucker Carlson 2.6¢ 3.4¢ — no edge
Ivanka Trump 0.7¢ 1.2¢ — no edge
Ted Cruz 0.9¢ 1.1¢ — no edge
Glenn Youngkin 0.9¢ 1.0¢ — no edge
Thomas Massie 0.7¢ 0.9¢ — no edge
⚡ up to 3.5¢ / share Sports resolves 2027-05-30
Polymarket LALIGA: 2027 Champion ↗ Kalshi La Liga Champion ↗
OutcomePoly YESKalshi YESArbitrage
Real Madrid 39.0¢ 42.5¢ Buy YES@Poly 39.0¢ + Buy NO@Kalshi 57.5¢ → lock 3.5¢
Barcelona 58.0¢ 57.5¢ — no edge
⚡ up to 3.1¢ / share Elections resolves 2026-11-04
Polymarket WA-08 House Election Winner ↗ Kalshi WA-08 House winner? ↗
OutcomePoly YESKalshi YESArbitrage
Democratic Party 94.1¢ 97.2¢ Buy YES@Poly 94.1¢ + Buy NO@Kalshi 2.8¢ → lock 3.1¢
Republican Party 4.2¢ 3.2¢ — no edge
⚡ up to 2.8¢ / share 2 arb outcomes Elections resolves 2028-11-07
Polymarket Democratic Presidential Nominee 2028 ↗ Kalshi 2028 Democratic presidential nominee ↗
OutcomePoly YESKalshi YESArbitrage
Jon Ossoff 14.7¢ 17.5¢ Buy YES@Poly 14.7¢ + Buy NO@Kalshi 82.5¢ → lock 2.8¢
Alexandria Ocasio-Cortez 22.1¢ 19.5¢ Buy NO@Poly 77.9¢ + Buy YES@Kalshi 19.5¢ → lock 2.6¢
Gavin Newsom 14.9¢ 14.5¢ — no edge
Kamala Harris 7.4¢ 9.1¢ — no edge
Pete Buttigieg 5.2¢ 4.8¢ — no edge
Josh Shapiro 5.0¢ 4.5¢ — no edge
Mark Kelly 3.2¢ 5.0¢ — no edge
Andy Beshear 2.5¢ 3.6¢ — no edge
Rahm Emanuel 2.4¢ 3.6¢ — no edge
Ro Khanna 2.2¢ 1.8¢ — no edge
J.B. Pritzker 1.1¢ 1.8¢ — no edge
Michelle Obama 0.7¢ 1.2¢ — no edge
⚡ up to 2.7¢ / share 2 arb outcomes Elections resolves 2026-10-04
Polymarket Brazil Presidential Election First Round: 2nd Place ↗ Kalshi Brazil Presidential Election First Round: 2nd Place ↗
OutcomePoly YESKalshi YESArbitrage
Luiz Inácio Lula da Silva 5.3¢ 8.0¢ Buy YES@Poly 5.3¢ + Buy NO@Kalshi 92.0¢ → lock 2.7¢
Renan Santos 3.7¢ 6.0¢ Buy YES@Poly 3.7¢ + Buy NO@Kalshi 94.0¢ → lock 2.3¢
Flávio Bolsonaro 86.5¢ 86.5¢ — no edge
No cross-venue matches in Other right now — either both venues are currently covering different markets in this category, or the matcher hasn't run since the last set resolved. The matcher re-runs every 5 minutes; browse the per-venue columns below to see what each venue lists.
Sort by 24h volume Total volume Liquidity Resolves soonest
P
Polymarket
0 of 0 events
No Polymarket markets in this category right now.
K
Kalshi
4 of 4 events
Will there be a year without polio before 2030?
Other $1,802 24h
↗
Before 2030
6.5%
Will the FDA approve a cure for Type 1 diabetes before 2033?
Other $1,722 24h
↗
Before 2033
38.0%
Will Karl Bushby Finish His World Walk to Hull Before 2030?
Other $1,319 24h
↗
Before 2030
94.0%
Will Trump make IVF free?
Other $967 24h
↗
Before 2029
14.0%
Sources: Polymarket Gamma API (free) · Kalshi REST API (RSA-PSS signed). Market pools, cross-venue matched pairs and the arbitrage scan all refresh every 5 minutes; the live 15-min crypto panel updates every 5 seconds; resolved markets drop on the next page load. Page loads serve only from cache — no API calls per visitor. LLM-verified cross-venue matching (gpt-4o-mini) included.
How it works

Built for speed, scaled for everyone

Polled venues are cached in Redis. LLM market-matching runs async on its own worker. The same data drives a paid REST + WebSocket API.

⚡

Polled + cached

Polymarket and Kalshi polled once per minute, cached in Redis. Visitors hit cache; venues never see our traffic spikes. WebSocket push for sub-second updates is on the roadmap.
🧠

LLM-matched markets

"BTC above $70k on Jun 30" on Polymarket = "BTC ≥ 70000 on 2026-06-30" on Kalshi. Matching runs async on a worker and is cached — never blocks a quote.
🛰️

REST + Data API

The same data that drives the dashboard is exposed via paid REST + WebSocket API for traders building their own signals. Tiers scale by request rate.