Definition

Prediction Market

A real-money market where participants trade contracts on the outcomes of future events. The price of a contract represents the market's aggregated probability estimate for that outcome occurring. LightningRod used Polymarket - the largest prediction market - as a live benchmark: train a model on public news using the chronological prediction method, have it place real bets, measure profit and calibration against GPT-4, Claude, Gemini, and other frontier models. The small LightningRod model won. Ben Turtle has mixed feelings about prediction markets broadly: they create strong incentives to surface private information into prices, but they also lower the barrier to problem gambling.

From the episode “AI That Predicts the Future”

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AI That Predicts the Future

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