Polymarket vs Kalshi Matched Markets & Price Gaps

Finds the same question listed on both Kalshi and Polymarket and reports the price gap, each side’s spread, and whether the gap actually clears both spreads. Plus every market on both exchanges in one normalized schema. Lexical matching, match score on every pair. No API keys.

Returns live prices, orderbooks, trades, settlement history and cross-venue spreads (Kalshi vs Polymarket pairs with executable edge) for Kalshi and Polymarket markets as one unified dataset: weather, politics, sports, crypto. Official public APIs, no login.

Prediction Market Scanner — Polymarket vs Kalshi

0xgollum/prediction-market-scanner

Search any topic and get live binary markets from Polymarket and Kalshi side by side — YES/NO prices, volume and links. Pairs the same yes/no question across both platforms and shows how their odds diverge.

Prediction Markets Scraper – Kalshi + Polymarket Odds & Prices

gratified_ashram/prediction-markets-scraper

Kalshi + Polymarket markets in one table: odds, bid/ask, volume, result. Price history for both (Kalshi since 2021, Polymarket since 2024), candlesticks, order book depth, trades, Polymarket comments and top holders. Politics, sports, crypto, economics, weather. Public APIs. Pay per record.

Find the same question priced differently on Kalshi, Polymarket and PredictIt. Matches equivalent binary Yes/No markets across venues and reports the YES-price gap, the cheaper side, and whether that gap clears both venues bid/ask. Keyless, no browser. Pay per matched pair.

Polymarket vs Kalshi Arbitrage — Same Question, Two Prices

jpmarketdata/prediction-market-arbitrage

Give it a question that trades on both Polymarket and Kalshi and get the price gap between them, after Kalshi's fee. Returns best bid and ask on each site, which site to buy on and sell on, the gap in cents per $1 contract. $0.02 per pair priced, suggestions included; refusals are free. Unofficial.

Current prices, volume and liquidity for open Kalshi and Polymarket markets, normalised to one row per market (yes/no price 0-1, event, category, close date, URL). Filter by venue, status, text, category or Kalshi series. Public read-only APIs; market data only, no trading.

Polymarket & Kalshi Odds Scraper — Prices & Arbitrage

galterapp/polymarket-kalshi-odds-scraper

Scrape live prediction-market odds from Polymarket and Kalshi in one run: yes/no prices, implied probabilities, spread, 24h volume, liquidity and close time for every open market, plus cross-venue matches with the net arbitrage return. Public APIs, no login, JSON output.

Kalshi Markets Scraper

literate_universe/kalshi-markets-scraper

Extract live Kalshi prediction-market data: election odds, politics, economics, crypto, sports and weather markets with prices, volume, open interest, close times and optional order books. Filter by series, event, category or keyword. No login needed.

Prediction Markets API — Kalshi & Polymarket Odds

lergassy/prediction-markets-api

Kalshi and Polymarket in one table: implied probability, yes and no price, best bid and ask, 24h move, volume, liquidity and close date for every market. Election odds, sports and economic event contracts, with price history and order book. No API key.