Best US Legal Prediction Markets (2026)

Live dashboard of what Kalshi's top-earning, ID-verified traders hold and trade, ranked by lifetime profit. Track whales in trending markets, browse top earners' trades in the trade explorer, get alerts when top traders enter a market, and review every settled win. The free ranking at kalshispy.com/top-kalshi-traders updates hourly; names and profits are verifiable on kalshi.com. An MCP server and OpenAPI let ChatGPT, Claude and Cursor answer with the same live data.

CobiaPicks

Cobia is the data, models and graded track record that sit on top of Polymarket and Kalshi — not another exchange. One screen: live picks, a Vegas engine, cross-venue line-shopping, smart-money tracking and our own trained per-game models, every pick graded from the settled outcome with ROI beside hit rate.

EventTracker

PodComet EventTracker brings prediction-market and event-contract data from multiple platforms into one place. Explore markets covering sports, politics, crypto, economics, and more; track changing market expectations; and research related contracts across venues. A FREE tier supports market exploration, while ET& offers additional analytical tools and insights. EventTracker is a read-only research platform—it does not execute trades or hold customer trading funds.

Sonist

Sonist automates live mention-market trading on Kalshi and Polymarket. It brings markets from both exchanges into one interface and monitors live audio, subtitle feeds, or accessibility captions for configured words. When a word is said, Sonist applies your risk limits and sends the trade through your account, letting you use the lowest-latency source available for each event and guaranteeing profit.

Prediction Markets Pro

Prediction Markets Pro provides analytics dashboards and research tools to help traders find value and get an edge on event contract platforms like Kalshi. It aggregates historical data, live pricing, and specialized trackers to analyze Mentions markets and political/governmental action markets.

Independent analysis and quant tooling for Kalshi, Polymarket, DraftKings Predictions and FanDuel Predicts, published by the analyst collective The 7 Oracles. 25 quant tools on the site, most of them free: EV calculator, Kelly sizing, probability/odds conversion, Bayesian updater, base-rate scanner, a fully-free combo edge builder with a 7-tier verdict ladder, KL-divergence, a cross-platform Kalshi/Polymarket arbitrage scanner, a daily mispricing scan, commodity and metals edge signals driven by options-implied volatility, NFL power ratings and win probability, and a state-by-state legality map. The same engine is exposed to AI agents as a Model Context Protocol server — 23 tools callable from Claude, ChatGPT and Cursor, 16 of them with no API key. Coverage is numbers-first and calibrated: model-vs-market reads, a published graded track record on every signal feed, and explicit methodology on every tool. Prediction markets are treated as event derivatives rather than as a sportsbook — trader, position, contract. Free tier includes the newsletter, daily movers and email-gated tools. Pro is $14.99/mo or $150/yr.

Spectral Edge

Spectral Edge is a suite of trading signals built specifically for BTC prediction markets using physics-trained AI. SpectralBot reads every BTC 15-minute prediction market in real time and delivers a clear UP or DOWN signal every 5 seconds. Start with a free trial.

The Overround

The Overround compares the same event across Kalshi, Polymarket and a panel of nine US sportsbooks, normalises the prices so they can be read against each other, and shows which venue is cheapest to back a given side. It also publishes the overround on each market, the sum of what it costs to back every outcome at each venue, so you can see what the house is charging before you trade. Every market gets its own page carrying the full field, the settlement source and the contract terms. Free, no account, and the underlying data is available as unauthenticated JSON.

OVERROUND

Profit leaderboards mostly reward bankroll and luck. OVERROUND asks a narrower question: which Polymarket wallets are actually worth watching? It rebuilds the leaderboard from the complete on-chain fill history (488 million fills, more than 700,000 wallets scored across 60+ categories as of July 2026), collapses correlated markets into independent events, removes the structural longshot premium, shrinks small samples toward the category baseline, and ranks wallets within their domain of expertise. Each ranked wallet gets a public calibration record, and every featured alert (the alert stream subscribers receive) is graded in public on the receipts page, losses included. The methodology is published in full, including its limitations. OVERROUND is an information product: it does not execute trades, hold funds, or recommend transactions.

GhostLeg

GhostLeg is a sports betting and prediction-market intelligence platform that centralized sportsbooks, Kalshi and Polymarket in one feed. We expose the underlying odds data, custom analytics, and derived signals (team streaks, predictions, line velocity, etc.) via an intelligence dashboard and Data API.

WinWeatherBot

WinWeatherBot is a Windows desktop app that trades Polymarket weather markets automatically. It blends a 138-member forecast ensemble across GFS, ECMWF, ICON and NOAA, and weights each model by recent accuracy. Self-custody and Microsoft-signed: your Polymarket key stays in Windows Keyring and never leaves your machine.

Auspex Terminal

Auspex Terminal is an advanced trading terminal for prediction market traders. Aggregates live data from all platforms into one interface. Surface arbitrage opportunities in real time, analyze probability charts with full technical overlays, track live positions across all your API supported accounts with advanced portfolio tracking/insight and much more. Built by traders, for traders.

Mesh

Mesh provides searchable transcripts, speaker profiles, topic taxonomy, and time-series analysis tools for prediction market-relevant events — earnings calls, political speeches, Fed proceedings, and more. Access everything through a REST API or MCP server for AI agent integration.

Predictefy

Predictefy is a prediction market trading terminal and aggregator for pro traders.

Vinfotech Prediction Market Software

Build your prediction market platform on a secure, proven base. Our custom prediction platform solutions use battle-tested architecture for faster custom prediction software development. We customize pricing models, automation, and F2P modules while supporting Kalsi clone platforms and Polymarket clone development to deliver a scalable, high-performance system.

Mercury Suite

mercurysuite.net AI Strategy Builder — Describe any trading strategy and go live in minutes. Our AI agent (powered by Claude) builds the full executable strategy: triggers, logic, risk management, everything. Or use our visual drag-and-drop node editor with 44 node types. Then deploy in one click to our VPS and have everything managed for you. Backtest on Real Data — Test any strategy against historical market data before risking a dollar. Full P&L breakdown, win rate, Sharpe ratio, equity curves. Paper Trade, Then Go Live — Validate with simulated trades first, then deploy live with one click. Run up to 10 bots simultaneously across Polymarket and Kalshi. Non-Custodial Wallets — Every wallet is powered by Turnkey — your private keys live in institutional-grade hardware security modules. We never see or touch them. Fund with USDC on Polygon, withdraw to any address, anytime. Mercury Funding — The first-ever prediction market prop firm. Prove your edge live and we'll fund you with up to $5,000. No evaluation fees, completely free to apply. We invest in traders who build with us. One-Click Bonds — Auto-scan markets for contracts trading above 90¢ near resolution — buy at 95¢, collect $1. Fixed-income yield in days. Catalyst — Real-time news intelligence that monitors 7 live news feeds for keyword spikes. Spot narrative shifts before markets move. 44 Strategy Nodes — 8 trigger types, 6 technical indicators, 11 logic conditions, 9 execution modes, 10 risk controls. Stop losses, trailing stops, Kelly sizing, DCA, TWAP, scaled entries, portfolio caps, drawdown limits. Custom API Triggers — Connect any JSON API. BTC price, ETH gas, Fear & Greed index, weather alerts, earthquake data — if it has an API, you can trade on it. Full Portfolio Dashboard — Live P&L, position tracking, equity curves, trade history, CSV export for taxes. Free. No minimums. No lock-ups. Built for tomorrow. http://mercurysuite.net

Delphi Terminal

The Largest Aggregated Prediction Market Platform We currently own and operate the world's largest Level 1, Level 2, and Level 3 dataset across multiple exchanges.