PrismML Bonsai 2 Small - MuSR: leaderboard

PrismML’s comparison of small Bonsai 2 and Qwen3.5 models on multi-step reasoning on the MuSR benchmark. Models use thinking with the same evaluation harness and sampling settings; the published scores are percentages.

Metric: Reported MuSR score (%). Source: raw.githubusercontent.com. Saturation forecast: Around January 2028. 8 models tracked.

Top models

#ModelScoreOverall rank
1Qwen 3.5 9B66.67#387
2Qwen 3.5 2B62.83#1146
3Qwen 3.5 4B62.43#496
4Qwen 3.5 0.8B58.2#1421

No result here: #3 Claude Opus 5.5, #5 GPT-6 Astra, #7 GPT-6.1 Sol.

Interactive version: theaggregate.ai/benchmark?slug=prismml-bonsai-2-small-musr · How It Works · Data refreshed daily, snapshot 2026-10-29.