Prediction markets have exploded in popularity over the past two years, and Polymarket leads the pack. If you’re wondering what is a prediction market, think of it as a platform where people buy and sell contracts on the outcomes of real-world events. Unlike traditional polls, these markets harness the wisdom of crowds and collective intelligence forecasting to produce remarkably accurate forecasts. The prediction market definition is simple: a marketplace where contract prices reflect the crowd’s best guess about future events. Understanding prediction market basics helps you see why Polymarket chose Polygon and what comes next for on-chain forecasting platforms.
Why Polymarket chose Polygon PoS
Polymarket launched on Polygon PoS in 2020 because the network offered low fees and fast finality. At that time, Ethereum mainnet gas prices often exceeded $50 per transaction, making micro-bets impractical. Polygon PoS provided sub-cent transaction costs and two-second block times, perfect for binary contracts explained in high-frequency trading environments. The platform needed a chain that could handle thousands of small trades daily without bankrupting users on fees.
Polygon’s EVM compatibility also mattered. Polymarket’s smart contracts ported directly from Ethereum with minimal changes, and the developer tooling remained familiar. This compatibility accelerated launch timelines and reduced security risks. By mid-2025, Polymarket processed over 10 million trades on Polygon PoS, validating the early infrastructure choice.
Gas and latency for typical trades
In 2026, a typical Polymarket trade costs about 0.02 MATIC, roughly $0.001 at current prices. That’s a fraction of a penny. Latency averages 2.1 seconds from submission to confirmation, fast enough for real-time event markets like sports outcomes or election results. These metrics make Polygon PoS competitive with centralized platforms like Kalshi, which operates off-chain but still charges trading fees.
Gas modeling per trade type
Simple yes-no binary markets consume about 80,000 gas per trade. More complex categorical prediction markets with multiple outcomes can reach 150,000 gas. Even at peak network congestion, Polygon PoS keeps gas prices below $0.01 per trade, preserving the user experience that made Polymarket popular. For comparison, the same trade on Ethereum mainnet would cost $5 to $15 during busy periods.
Polygon zkEVM migration considerations
Polygon zkEVM launched in 2023 and offers stronger security guarantees through zero-knowledge proofs. Polymarket has considered migrating but faces trade-offs. zkEVM transactions cost slightly more and take longer to finalize because of proof generation. For a platform where users expect instant feedback, that extra second matters. As of June 2026, Polymarket remains on Polygon PoS while monitoring zkEVM performance improvements.
Alternatives: Base, Arbitrum, Solana
Base and Arbitrum offer similar cost profiles to Polygon PoS. Base, built on Optimism’s OP Stack, benefits from Coinbase’s liquidity and user base. Arbitrum boasts deep DeFi integrations. Solana provides sub-second finality and even lower fees but requires rewriting smart contracts in Rust. Each chain presents unique advantages, yet Polymarket’s existing Polygon infrastructure and user base create switching costs that outweigh marginal gains.