About
Full Prediction is an independent data aggregator built for analysts, researchers and journalists who want to understand what prediction markets collectively believe about future events.
We pull publicly available probability data from Polymarket, Kalshi, Manifold Markets and Metaculus and present it in one place — so you can compare what different platforms think about the same event without switching between four different sites.
We built this because prediction market data is scattered, hard to compare, and underused as a research and information tool. The crowd's collective judgement deserves a better home.
Data only
We display publicly available probability data from source APIs. We add no editorialising to market prices — what you see is what the crowd thinks.
No trading
We do not facilitate trading, hold any regulatory permissions for financial services, or act as a broker or intermediary for any prediction market platform.
Education first
Our Learn hub, Glossary and Newsletter exist to make prediction market data understandable — for journalists, researchers and first-time visitors alike.
Important disclaimer
Full Prediction displays publicly available data for informational and educational purposes only. We are not a financial services provider. We do not provide financial advice, facilitate trading, or hold any regulatory permissions. Prediction market probabilities reflect collective crowd estimates and should not be interpreted as investment advice or as a guarantee of any outcome. If you are considering participating in prediction markets, please verify the legal status of such activity in your jurisdiction.
Polymarket
The world's largest prediction market by volume. Data accessed via the public Gamma API. No authentication required.
Kalshi
CFTC-regulated US prediction market. Data accessed via the public Trade API v2. No authentication required for read access.
Manifold Markets
Play-money prediction market with the broadest market coverage. Public API with no authentication required.
Metaculus
Forecasting platform specialising in long-horizon questions. Public API introduced in 2021, no authentication required for read access.
Questions about the data, editorial enquiries, partnership discussions or press requests — we'd love to hear from you.
Response time
We aim to reply within 1–2 business days.
Topics we can help with
Data questions, editorial enquiries, partnership discussions and press requests.
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