Manifold is a marketplace to find, buy, and manage developer services. It helps developers discover, connect, and integrate the best tools and...
Varies based on services
Best Good Judgment Open Alternatives ranked by AI · updated Aug 2026
Good Judgment Open is a public forecasting platform where participants answer questions about geopolitics, economics, technology, and global affairs. It is designed for forecasters who prefer leaderboard-based prediction tournaments and probability estimates over market trading.
Top 6 Good Judgment Open alternatives
Polymarket is a crypto-based prediction market for trading contracts on politics, economics, sports, technology, and world events. It is best suited to...
Pros
- Generally deeper liquidity and broader public-market activity than Futuur
- Offers real-money exposure rather than only virtual currency
- Provides a large selection of timely geopolitical and financial markets
Cons
- Requires cryptocurrency and a compatible wallet in many jurisdictions
- Regulatory and geographic availability is more limited than Futuur
- Trading introduces financial risk and blockchain transaction complexity
Free to use; trading fees may apply
3
Global Predictions Portal
Global Predictions
Global Predictions Portal is an AI-assisted forecasting platform for businesses, investors, and policy professionals analyzing macroeconomic, geopolitical, and climate risks. It combines...
Pros
- Combines macroeconomic, geopolitical, and climate forecasts in one platform
- More suitable for institutional risk analysis than general-purpose prediction markets
- Uses model-driven analysis alongside human and expert inputs
Cons
- Public pricing and feature limits are not clearly disclosed
- Less transparent forecast methodology than open forecasting communities
- Primarily aimed at organizations rather than casual forecasters
Custom pricing
Futuur is a crowd-powered prediction market where users forecast outcomes across politics, economics, sports, science, and current events. It is aimed at...
Pros
- Covers more topics than politics-focused platforms such as PredictIt
- Accessible without deposits or financial-market onboarding
- Lets users create and trade predictions in a straightforward market interface
Cons
- Lacks the regulated real-money contracts available on Kalshi
- Lower liquidity and visibility than Polymarket or Manifold Markets
- Virtual rewards provide less direct incentive than cash-based markets
5
Kalshi
KalshiEX LLC
Kalshi is a regulated event-contract exchange where users trade contracts tied to economic, political, weather, and cultural outcomes. It is designed for...
Pros
- Regulated U.S. exchange structure provides clearer market rules than Futuur
- Uses cash-settled contracts with transparent maximum payouts
- Strong coverage of economic indicators and measurable events
Cons
- Access and market availability depend heavily on jurisdiction
- Requires deposits and exposes users to real financial losses
- Contract selection is narrower than Futuur's broad question catalog
From $0.01 per contract; trading fees apply
6
Manifold Markets
Manifold Markets
Manifold Markets is a social prediction platform where users create and trade markets using virtual Mana. It serves communities that want to...
Pros
- Much stronger user-created market and community features than Futuur
- Free virtual currency makes experimentation and niche questions easy
- Supports polls, questions, comments, and rich social interaction
Cons
- Forecast accuracy and liquidity vary widely across user-created markets
- Virtual Mana has less financial significance than real-money contracts
- Large market catalogs can be harder to navigate than Futuur's curated topics
How good are these alternatives?
Your feedback helps us improve the AI rankings.
✅ Thanks for your feedback!
Know a better alternative? 🙌
Suggest a product and our AI will verify it's a real alternative to Good Judgment Open before adding it to the list.