Prediction market arbitrage and odds comparison

MarketMaster focuses on comparing prices and potential cross-market opportunities.

• Free and paid
• Polymarket
• Kalshi

ArbEdge focuses on comparing prices and potential cross-market opportunities.

• Paid or fee-based
• Polymarket
• Kalshi

Prediction Pilot focuses on comparing prices and potential cross-market opportunities.

• Kalshi

Arbitrage Agent focuses on comparing prices and potential cross-market opportunities.

• Paid or fee-based
• Polymarket
• Kalshi

CrossOdds focuses on comparing prices and potential cross-market opportunities.

• Free and paid
• Polymarket
• Kalshi

Prediction Market Intelligence Platform focuses on comparing prices and potential cross-market opportunities.

• Free and paid
• Polymarket
• Kalshi

ArbiTrack focuses on comparing prices and potential cross-market opportunities.

• Polymarket
• Kalshi
• PredictIt

DOZOR.BET focuses on comparing prices and potential cross-market opportunities.

• Polymarket
• Kalshi

AlertPilot’s arbitrage view compares quoted prices across Polymarket, Kalshi, Opinion and Probable. It presents potential cross-platform spreads through a browser interface with mobile and desktop layouts.

• Polymarket
• Kalshi

CRYPTOLINE describes a terminal for comparing Polymarket and Kalshi spreads, with alerts and a Telegram Mini App.

• Polymarket
• Kalshi

DOZOR.BET focuses on comparing prices and potential cross-market opportunities.

• Polymarket
• Kalshi

WEB3 BET describes esports arbitrage scanning across bookmakers, Polymarket and Kalshi, with staking calculations, order books and a profit-and-loss journal.

• Polymarket
• Kalshi

Rust arbitrage bot for cross-platform trades between Kalshi and Polymarket. Configured through environment variables with a dry-run paper mode by default and live execution when disabled.

• Free option
• Polymarket
• Kalshi

Python bot scanning thousands of Polymarket and Kalshi markets for cross-platform and YES+NO bundle mispricings, with market making, risk limits, fee accounting, a web dashboard and simulation mode.

• Free option
• Polymarket
• Kalshi

FastAPI backend and Next.js dashboard that poll Polymarket CLOB and Kalshi every second for Bitcoin 1-hour price markets, flagging opposing-position combinations costing under $1. Detection only.

• Free option
• Polymarket
• Kalshi

Educational Node.js bot built on pmxt that buys YES on one platform and NO on the other when Polymarket and Kalshi prices sum below $1. Market orders; dry run default.

• Free option
• Polymarket
• Kalshi

Free calculator for event-contract arbitrage: enter odds from Kalshi, Polymarket, Robinhood or Interactive Brokers and it returns fee-adjusted spreads and stake splits.

• Free option
• Polymarket
• Kalshi
• Robinhood

Scanner that flags YES/NO price gaps across Polymarket, Kalshi and Opinion (990+ matched pairs), with alerts and a REST API on higher tiers. Does not place trades.

Website did not answer at the last check

• Paid or fee-based
• Polymarket
• Kalshi
• Opinion