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 01:57:33Z

polling…

Asset	Polymarket	Kalshi	Spread	Open
BTC · 15m ✓ on both venues	92.5% Down 7.5%	96.3% Down 3.7%	3.8 pp	P↗ K↗
ETH · 15m ✓ on both venues	67.5% Down 32.5%	62.5% Down 37.5%	5.0 pp	P↗ K↗
SOL · 15m ✓ on both venues	85.5% Down 14.5%	80.5% Down 19.5%	5.0 pp	P↗ K↗
XRP · 15m ✓ on both venues	45.5% Down 54.5%	44.5% Down 55.5%	1.0 pp	P↗ K↗
DOGE · 15m ✓ on both venues	86.0% Down 14.0%	90.5% Down 9.5%	4.5 pp	P↗ K↗
BNB · 15m ✓ on both venues	48.0% Down 52.0%	33.0% Down 67.0%	15.0 pp	P↗ K↗
HYPE · 15m ✓ on both venues	83.0% Down 17.0%	75.5% Down 24.5%	7.5 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.

Pools refresh hourly · pairs every 5 min

last built 2026-06-24T01:49:57+00:00

All 15000 Politics 653 Elections 8091 Crypto 426 Sports 2571 Finance 550 Economy 261 Technology 363 Culture 841 Weather 497 Geopolitics 399 Esports 247 Commodities 66 Mentions 23 Other 12

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

0 of 0 events

No Polymarket markets in this category right now.

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.

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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.

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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.