Welcome to

Good Judgment® Open


What will the state of the world be in 2017? Join the new Arab Strategy Forum State of the World 2017 Challenge to forecast the pressing political and economic issues that will shape the world in 2017.

Learn more about how Good Judgment Inc can help you and your organization at goodjudgment.com and visit our Superforecasting in Action Blog.

Read about the GJ Open crowd's forecast of Trump's election spending at the Monkey Cage, then join the US Election Challenge to make your own forecasts.


Start keeping score.

Are you a Superforecaster®? Can you predict the future better than the pundits in the media? Put your probability where you mouth is and join Good Judgment Open, the only site for those who are serious about forecasting.

GJ Open is more than a game. It’s the best possible place to hone your forecasting skills. We’ve designed GJ Open specifically to help you improve your forecasting abilities. Make a forecast, explain your reasoning (and be challenged by others), and find out how you stack up against the crowd.

From the future of US politics to international affairs, from technology to sports and entertainment, there's bound to be something in your wheelhouse.

Still not sure? Check out our active challenges, our featured questions, or browse a list of all questions on GJ Open.

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