What is PredTerminal?

TL;DR: PredTerminal is a free prediction market intelligence tool that tracks whale bets across both Polymarket and Kalshi in one feed. It detects $10K+ trades, scores traders by accuracy, scans for cross-platform arbitrage, and ranks the top 1,000 traders. No account required.

What does PredTerminal do?

PredTerminal monitors prediction markets in real-time and surfaces trading opportunities. It combines data from Polymarket (the largest prediction market) and Kalshi (the only CFTC-regulated US exchange) into a unified feed. This cross-platform approach is rare — most whale trackers only cover one platform.

The tool is designed for retail prediction market traders who want to see where smart money is moving without checking multiple platforms.

Key features

Whale bet tracking — $10K+ trades across Polymarket and Kalshi with trader accuracy scoring. Traders are labeled SHARP (60%+ win rate, 50+ trades) or TRACKED (50%+ win rate, 20+ trades).
Insider signal detection — Flags contrarian bets, coordinated entries, outsized positions, and unknown wallet activity.
Cross-platform arbitrage scanner — Finds price gaps between Polymarket and Kalshi for the same event, with net profit after ~2% fees.
Top trader leaderboard — 1,000+ traders ranked by profit, ROI, win rate, or volume with performance badges.
Market browser — Search and filter 6,000+ markets with live prices, orderbooks, charts, and resolution criteria.
Position size calculator — Kelly Criterion tool for optimal bet sizing.
AI whale summary — Natural language analysis of recent whale activity, updated every 30 minutes.
Browser alerts — Desktop notifications when new whale bets arrive while your tab is in background.
Free API — REST API with 5 public endpoints, no auth required. Documentation.

How does PredTerminal compare to other tools?

Feature	PredTerminal	Polywhaler	Kreo	Oddpool
Polymarket tracking	Yes	Yes	Yes	Yes
Kalshi tracking	Yes	No	Yes	Yes
Cross-platform arbitrage	Yes (free)	No	No	$100/mo
Trader accuracy scoring	Yes (free)	Limited	Paid	No
Top trader leaderboard	1,000+ (free)	No	Limited	No
Position calculator	Yes	No	No	No
Free API	Yes	No	No	$30+/mo
Account required	No	No	Yes	Yes
Price	Free	Freemium	Freemium	$30-100/mo

Who uses PredTerminal?

Retail traders who bet on prediction markets (politics, crypto, sports, economics) and want an information edge. The typical user checks PredTerminal to see what whale bets landed, whether any arbitrage gaps opened, and which top traders are active — before placing their own bets on Polymarket or Kalshi.

Is PredTerminal free?

Yes. All features are free during the growth phase. No account needed, no credit card, no delays. The plan is to introduce a Pro tier for email alerts and extended history after reaching 500+ active users.