ProofBench 1.1 Scores

Native Lean 4.25.2 verification including native_decide. Version 1.1 only; not comparable to the unversioned historical cohort. Contributes to Mathematical Reasoning using a provisional calibrated scale.

ProofBench 1.1 Scores
Native Lean 4.25.2 verification including native_decide. Version 1.1 only; not comparable to the unversioned historical cohort. Contributes to Mathematical Reasoning using a provisional calibrated scale.

How to read this chart

Bars rank models by the source-backed benchmark value used for this chart. Longer bars indicate higher published scores.

Data sources
Data updated Sep 22, 2026
ProofBench 1.1 vs Effective Cost
X = effective cost (log). Y = ProofBench 1.1. Native Lean 4.25.2 verification including native_decide. Version 1.1 only; not comparable to the unversioned historical cohort.
Controls:
ProofBench 1.11:1Cost

How to read this chart

Each point is a public model. The chart compares ProofBench 1.1 (%) against Effective Cost (per 1M I/O Tokens), with color showing the model provider.