Polymarket vs Rain

How Polymarket vs Rain compare on our ratings, prediction market specs, funding, pros and cons.

VS
Rain3.0/5
Feature
Ratings
Our score4.0/53.0/5
User ratingNo reviews yetNo reviews yet
Market selection4.54.0
Liquidity4.53.0
Fees3.02.0
Resolution quality4.02.5
Ease of use4.03.5
Specs
Market typesPolitics, Sports, Crypto, Economics, CultureNot disclosed
Settles inpUSD, a crypto collateral token backed by USDCNot disclosed
ChainsPolygonArbitrum
Trading feesNot disclosed5% per trade split across LP, creator, and resolver
Resolution sourceUMA Optimistic OracleDesignated market resolver
Available in the US NoNot disclosed
Regulated venue NoNot disclosed
Market topicsPolitics, Elections, Sports, Crypto, Finance, Geopolitics, Technology, Culture, Weather, EconomicsNot disclosed
Liquidity rewards Yes Yes
Company
Founded2020—
HeadquartersUnited States—
Investors1789 Capital, Intercontinental Exchange, Founders Fund, General Catalyst +26Not disclosed
Strengths and weaknesses
Pros
  • Broad markets across politics, sports, crypto and current events
  • Non-custodial trading with onchain positions
  • Polygon supports pUSD collateral and ERC-1155 outcome tokens
  • UMA provides a defined challenge process for supported markets
  • Permissionless market creation without approval steps or forms
  • Dual AMM and order-book options accommodate both niche and liquid markets
  • Token contract audited by Hacken in August 2025
  • TVL reached over $15.8M on Arbitrum in October 2026
Cons
  • International trading is blocked for US residents
  • Country restrictions include the United Kingdom, France, Germany and Japan
  • Thin liquidity can increase entry and exit costs
  • Resolution disputes can delay or change settlement outcomes
  • Fixed 5% trading fee is high compared to standard DeFi swaps
  • Third-party resolvers introduce potential event dispute risks
  • Operation is confined to Arbitrum with no other chains supported
  • Niche sub-pools risk thin liquidity and execution slippage
Best forEvent probability traders, Onchain prediction market users, Politics and sports marketsArbitrum DeFi traders, Independent prediction market creators, Developers building event platforms

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