Brand hub · OG
OG
Onchain event markets platform.
Editorial
Our OG coverage
Comparisons
OG vs the rest
Side-by-side comparisons with every platform we track.
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OG vs Kalshi
The first CFTC-regulated event contract exchange in the United States.
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OG vs Polymarket
The largest crypto-settled prediction market for global events.
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OG vs ForecastEx
An exchange-grade forecast market owned by Interactive Brokers.
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OG vs PredictIt
Academic political prediction market operating under CFTC no-action relief.
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OG vs Interactive Brokers Forecast Contracts
CFTC-regulated event contracts inside the IBKR trading platform.
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OG vs Robinhood Prediction Markets
Event contracts inside the Robinhood app powered by Kalshi.
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OG vs Crypto.com Sports & Markets
Crypto-native event contracts and sports markets from Crypto.com.
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OG vs Underdog Fantasy
Daily fantasy and pick-em products, adjacent to event contracts.
Guides
Related guides
Legal
Are prediction markets legal in the US?
The CFTC, the states, and the live legal questions shaping access in 2025.
Strategy
How Kalshi works
Order flow, settlement, fees and the regulatory plumbing behind the largest US exchange.
Strategy
How Polymarket works
USDC, Polygon, on-chain settlement and why US residents can't legally use it.
Beginner
What is a prediction market?
A plain-English guide to how prediction markets price the probability of real-world events.
Beginner
How event contracts work
Yes/No contracts, settlement, premiums and what "a price of 62 cents" actually means.
Comparison
Prediction markets vs sportsbooks
Why an event contract on the Super Bowl is structurally different from a sportsbook wager.
Tools
Trading tools
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