Darwin-27B-ZTC-v9 tops S1MB leaderboard across 137 benchmarks

Darwin-27B-ZTC-v9 took first place on the English S1MB leaderboard using Borda aggregation as of October 20, 2026, beating 197 models across 137 benchmarks. The model generates no text: ZTC (zero token choice) returns per-option probabilities in a single forward pass. Weights are released under Apache-2.0.

• Borda score of 90.38 vs 90.14 for kettei-fat v1.0 and 89.53 for Superion S1
• Ranks only second on task-average score at 72.20
• boardgameqa-choice accuracy rose from 0.500 to 0.953
• Weights published on Hugging Face under Apache-2.0