# Gemini 3.1 Pro Preview

> Gemini 3.1 Pro Preview on LegalForecastBench: micro Brier 0.1834 across 387 units.

Canonical: https://www.legalforecastbench.org/models/gemini-3-1-pro-preview/

- Provider: Google
- Reasoning: High thinking
- Public release: 2026-02-19
- Training cutoff: January 2025 (knowledge cutoff)
- Eligibility: eligible. The reported knowledge cutoff (January 2025) predates the first scored decision on June 30, 2026.
- Micro Brier: 0.1834
- Equal-case Brier: 0.1808
- Accuracy: 78.0% (302 of 387)
- High-confidence predictions: 320, of which 57 were wrong

Ranked comparison: https://www.legalforecastbench.org/#leaderboard