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Bench to the Future 2 — Calibration Error

Forecasting · 2026-04-20

The calibration component of the BTF-2 Brier decomposition measures the squared gap between stated forecast probabilities and observed outcome frequencies. Lower calibration error is better.

Top models (lower is better)

ModelScore
Grok 4.200.0
Opus 4.60.0
GPT-5.40.0
Gemini 3.1 Pro Preview0.0
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