What is PredictIt? A quick guide for traders
PredictIt is a centralized political prediction market where users buy and sell shares in event outcomes; each share pays $1 if the outcome occurs and $0 otherwise. Traders use PredictIt to speculate on elections and political events via its order book and market rules. If you’re a crypto-native trader comparing platforms, knowing the differences in custody, fees, and execution latency matters. Below I summarize what PredictIt is and where Polymarket and PolyArb fit into the landscape.
How PredictIt works
PredictIt operates as a regulated, centralized exchange for political event markets. It lists binary and multi-outcome markets, lets users place limit and market orders, and enforces position and investment caps specific to its ruleset. Payout is $1 per winning share, and resolution follows its own reporting and adjudication processes.
Key differences vs Polymarket
Polymarket is a decentralized, blockchain-native prediction market built on Polygon with pUSD as settlement currency and trades executed on a CLOB. Polymarket uses the UMA optimistic oracle for resolution and gas is sponsored through a Relayer; PredictIt is centralized and has different KYC and regulatory constraints. For traders this means differences in custody model, settlement token, latency, and geographic availability.
Why latency and tooling matter
Execution speed and alerts determine whether you can capture short-lived arbitrage spreads. Free bots often see ~800ms latency; PolyArb offers 40ms latency and real-time Telegram and Discord alerts so you can act faster. Faster tooling reduces slippage risk and increases the chance of filling both legs of an intra-market arb.
Where PolyArb fits in
PolyArb is a subscription tool for intra-Polymarket arbitrage: $99/month, non-custodial, live today, and advertises a $7.62 minimum guaranteed edge per trade. It focuses on buying complementary outcomes on Polymarket when summed best-ask prices fall below $1.00. Remember: the mathematical edge still carries risks — resolution disputes, partial fills, fees, and settlement timing.
Start capturing Polymarket spreads today
Subscribe to PolyArb for $99/month for 40ms execution, non-custodial alerts via Telegram and Discord, and the advertised $7.62 minimum guaranteed edge per trade.
FAQ
- Is PredictIt the same as Polymarket?
- No. PredictIt is a centralized political market with different custody, rules, and regulatory constraints. Polymarket is decentralized on Polygon, uses pUSD, and resolves via UMA.
- Can I use PolyArb on PredictIt?
- PolyArb is built for intra-Polymarket arbitrage on Polymarket’s CLOB. It does not operate on PredictIt’s platform.
- Are arbitrage trades risk-free?
- No. Intra-market arbitrage can be mathematically edge-positive but still faces risks: resolution disputes, slippage, partial fills, fee changes, and settlement delays.