Leaderboard

Accuracy by model

The headline view: how each model scores on the same fixed set of 143 questions, with uncertainty made explicit through confidence intervals rather than hidden behind a single number.

Accuracy by model

Point estimate with 90% confidence interval, sorted from highest to lowest accuracy.

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Full leaderboard: accuracy, confidence interval and calibration error (ECE) per model.
Model Provider Accuracy 90% CI ECE (lower is better)

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Performance over time

Tracking model performance as new versions and benchmarks arrive

Each point is one model’s accuracy on the day we tested it.

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Calibration explorer

Does the model know what it doesn’t know?

For each self-reported confidence level, we plot the model’s actual accuracy.

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