Kalshi Prediction Market Data

Live and historical forecast probabilities from Kalshi, the CFTC-regulated US prediction market. Kalshi lists event contracts on economics (Fed rates, CPI, jobs, GDP), politics, weather, sports, culture and finance. Each contract's price, in dollars from 0 to 1, is the market's probability that the event happens. The API covers series, events and markets with current bid, ask and last prices, volume, open interest, close times and settlement results, plus daily, hourly and minute price candles. Use it to track how expectations for an economic release or an election moved, or to compare Kalshi's forecast with Polymarket's. No API key required.

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Kalshi Prediction Market Data

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What you can query

series, events and markets by category, current bid/ask/last prices as probabilities, 24h and total volume, open interest, close and settlement times, settlement results, daily/hourly/minute price candles, historical (archived) markets and candles

What you can do

  • Chart how the probability of a Fed decision or CPI print changed over time
  • Track forecasts for elections and policy outcomes
  • Find the most traded Kalshi markets right now
  • Compare Kalshi and Polymarket forecasts for the same event
  • Check how past forecasts compared with the settled result

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