The official Twitter handle of the internet's smartest crowd. GJ Open forecasts do not represent the views of Good Judgment Inc (our doting parent co.)
Joined March 2017
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17 Nov 2025
Are you a Superforecaster®? Our 11th annual collaboration with The Economist is live. In The World Ahead 2026 challenge on GJ Open (gjopen.com/challenges/130-th…), you can test your skill on political, economic, and cultural questions. The winner will be published in The Economist!
12 Nov 2025
Here are some predictions for the coming year, from the experts at Good Judgment economist.com/the-world-ahea…
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Who wins the World Cup? Who takes the Wimbledon men’s final? Both are open for forecasting on #GJOpen right now, alongside questions on US politics, energy, and markets. gjopen.com/questions/5413-wh…
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Our Q3 “Right!” said FRED Challenge is live: 14 questions on finance and the economy, every one sourced from the St. Louis Fed’s data. Forecast at least 12 for a shot at a top-three badge, and the top scorer gets interviewed for the Insights blog.
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Join the Challenge: gjopen.com/challenges/140-ri…
Previous winners on our blog: goodjudgment.com/insights/
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May 29
New on #GJOpen: the 2028 field is already taking shape. Will a Trump (Don Jr., Ivanka, or Eric) launch a Republican run? Will Elissa Slotkin or Rand Paul jump in? Have your say!
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May 29
We’ve also opened questions on Starmer’s grip on No. 10, Pedro Sánchez’s future in Madrid, whether SCOTUS takes up Second Amendment cases, and which lab’s LLM leads the Arena in 2027. Test your forecasting mettle:
gjopen.com/questions/5386-wi…
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May 22
September gas prices. The next 5% on the 10-year Treasury. Nvidia’s Q2 revenue. The going rate for an hour of GPU compute. Test your forecasting mettle! gjopen.com/questions/5371-wh…
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May 22
Will Luigi Mangione be convicted? Will Rodrigo Paz or Friedrich Merz still be in office? Will DeSantis or Rubio jump into the 2028 race? Find these and other new questions on #GJOpen and add your forecasts!
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May 15
The 2026 World Cup kicks off next month. Will France survive the group of death? Forecast Group I (France, Senegal, Norway, Iraq) and the rest of the group stage on #GJOpen: gjopen.com/questions/5339-wh…
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May 15
Will Harris, Newsom, Kelly, or Shapiro announce a 2028 presidential bid before September 2027? Find these and other new questions on #GJOpen! gjopen.com
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More new questions live on #GJOpen: a federal ban on sports-event prediction markets, the top ARC-AGI-3 score by mid-July, the Bank of Korea’s November base rate, Michigan’s vote on a constitutional convention, and Idaho’s state gun. Go to gjopen.com to forecast!
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Two new questions on US/Iran tensions:
Will the US acknowledge deploying forces to Kharg Island before 9 August 2026?
Will a GCC member acknowledge a strike inside Iran by that date?
Forecast both on #GJOpen.
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Good Judgment Open retweeted
One last reminder: Superforecasting Workshop, 12 & 13 May, 12:00 pm - 2:30 pm ET.
Small groups. Researchers and Superforecasters guiding you through the techniques.
Stop guessing. Start Superforecasting.
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Two new questions for the geopolitics watchers on GJOpen:
7-day average ship traffic through the Strait of Hormuz by 31 July, and Will an OPEC member announce departure before 2027?
gjopen.com/questions/5301
gjopen.com/questions/5302
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Set sail for the multiplex. Forecast opening-weekend grosses on GJ Open: live-action Moana and Christopher Nolan’s The Odyssey.
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Apr 17
When does Elon Musk’s net worth cross $1 trillion? New forecasting questions on GJOpen.
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Apr 17
Which AI lab will reach more US businesses by March 2027, Anthropic or OpenAI? New questions posted on GJOpen.
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Good Judgment Open retweeted
“Foresight is real. Some people have it in spades. They aren’t gurus or oracles with the power to peer decades into the future, but they do have a real, measurable skill.” - Tetlock & Gardner
Next workshop: goodjudgment.com/services/up…
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