Beta — Free Access
Prediction Market
Historical Data
Trading activity and market metadata from Polymarket and Kalshi—without touching an API. Download, open, analyze.
Last 7 days • Updated daily • Zero cost
Trading activity and market metadata from Polymarket and Kalshi—without touching an API. Download, open, analyze.
Last 7 days • Updated daily • Zero cost
Query markets and trades directly in the cloud. Run SQL against the full dataset without downloading anything.
DeltaBase provides historical trading data from prediction markets—Polymarket and Kalshi—without requiring any API integration. Download clean CSV files or query directly via BigQuery. Your data is ready for analysis in seconds, not hours.
No coding required. Download CSV files and open them in Excel, Google Sheets, or any spreadsheet tool. For those who do code, the BigQuery dataset enables SQL queries at any scale.
Every trade with timestamp, price, size, and market ID. Plus complete market metadata: titles, descriptions, categories, and resolution status. Everything needed to analyze how crowd predictions evolve over time.
Go to the Google Cloud Console, navigate to BigQuery, and add the project deltabase-public to your explorer. You'll find the prediction_markets dataset with tables for trades and market metadata. You can query up to 1TB/month free with a Google Cloud account.
Working with APIs directly means handling authentication, rate limits, pagination, and data normalization yourself. We've already done that work. You get clean, consistent files—download and start analyzing immediately.
The possibilities are wide open:
Data refreshes daily. The free beta includes the last 7 days of trades. The upcoming Pro tier will unlock the complete historical archive going back to each market's inception.
Yes. The beta is completely free—7 days of data with no strings attached. When Pro launches with full historical access, pricing will be under $100/month. We're committed to keeping prediction market data accessible.
Free
Access to the last 7 days of historical trades and metadata. CSV downloads and BigQuery access included.
Under $100/mo
Full historical archive going back to market inception. Fresh data delivered every day.