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

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.

Updated 12:35:46Z

polling…

Asset	Polymarket	Kalshi	Spread	Open
BTC · 15m ✓ on both venues	35.5% Down 64.5%	21.5% Down 78.5%	14.0 pp	P↗ K↗
ETH · 15m ✓ on both venues	25.5% Down 74.5%	5.8% Down 94.2%	19.7 pp	P↗ K↗
SOL · 15m ✓ on both venues	40.5% Down 59.5%	14.0% Down 86.0%	26.5 pp	P↗ K↗
XRP · 15m ✓ on both venues	30.5% Down 69.5%	9.0% Down 91.0%	21.5 pp	P↗ K↗
DOGE · 15m ✓ on both venues	47.5% Down 52.5%	18.5% Down 81.5%	29.0 pp	P↗ K↗
BNB · 15m ✓ on both venues	12.5% Down 87.5%	7.2% Down 92.8%	5.3 pp	P↗ K↗
HYPE · 15m ✓ on both venues	14.0% Down 86.0%	10.4% Down 89.6%	3.6 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.

Pools refresh hourly · pairs every 5 min

last built 2026-07-13T11:57:36+00:00

All 1950 Politics 115 Elections 1245 Crypto 38 Sports 151 Finance 68 Economy 45 Technology 58 Culture 76 Weather 29 Geopolitics 72 Esports 38 Commodities 9 Mentions 1 Other 5

No cross-venue matches in Mentions 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

1 of 1 event

Who will perform at World Cup halftime show?

Mentions $10,931 24h · 30 options

↗

Shakira

99.5%

Justin Bieber

99.4%

Burna Boy

99.1%

Coldplay

98.7%

Sabrina Carpenter

35.5%

Karol G

10.7%

Maluma

8.2%

Bad Bunny

5.5%

+ 22 more on Polymarket ↗

K

Kalshi

0 of 0 events

No Kalshi markets in this category right now.

Sources: Polymarket Gamma API (free) · Kalshi REST API (RSA-PSS signed). Market pools refresh hourly; cross-venue pairs reconcile every 5 minutes; 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.