VIPER (Veterinary Pathology) - MCQ: leaderboard

Multiple-choice questions of VIPER (Harvard Medical School and Mass General Brigham, 2026) on rat histology images, scored as accuracy in percent averaged over five cyclic rotations of the answer order; higher is better.

Metric: Multiple-choice accuracy (%; five options, mean over five cyclic rotations of the answer order; the MCQ items of 1,251 questions written and validated by board-certified veterinary pathologists on 419 H&E-stained rat histology images from seven organ systems). Source: arxiv.org. Saturation forecast: Around February 2027. 16 models tracked.

Top models

#ModelScoreOverall rank
1Gemma 4 31B (IT)60.7#342
2Qwen 3.5 27B60#359
3GPT-5.458.5#123
4Claude Sonnet 4.654.6#161
5Gemini 2.5 Flash52.8#453
6GPT-5.4 Mini48#389
7MedGemma 1.5 4B29.9#2562
8GPT-5.4 Nano24.4#635

No result here: #1 Claude Fable 5.2, #2 Gemini 4 Carbon, #5 Claude Opus 5.5.

Interactive version: theaggregate.ai/benchmark?slug=viper-veterinary-pathology-mcq · How It Works · Data refreshed daily, snapshot 2026-11-13.