PrismML Bonsai 2 Small - GPQA Diamond: leaderboard

PrismML’s comparison of small Bonsai 2 and Qwen3.5 models on graduate-level science questions, averaging five sampled answers per question. Models use thinking with the same evaluation harness and sampling settings; the published scores are percentages.

Metric: Mean accuracy over 5 samples (%). Source: raw.githubusercontent.com. Saturation forecast: Around January 2027. 8 models tracked.

Top models

#ModelScoreOverall rank
1Qwen 3.5 9B82.53#387
2Qwen 3.5 4B78.08#496
3Qwen 3.5 2B58.48#1146
4Qwen 3.5 0.8B32.12#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-gpqa-diamond · How It Works · Data refreshed daily, snapshot 2026-10-29.