Olfactory Perception Benchmark - Odor Pleasantness: leaderboard
Metric: Score (%) on odor pleasantness paired comparison (which of two molecules smells more pleasant, 175 pairs; any-overlap accuracy) of the 1,010 questions of the Olfactory Perception (OP) benchmark presented with compound-name prompts (the isomeric SMILES variant is reported only in figures), constrained option lists, provider APIs without web search or tools, each model at its stated reasoning effort or thinking budget; higher is better. Source: arxiv.org. Saturation forecast: Not forecast. 21 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | Claude Opus 4.6 (High) | 74.9 |
| 2 | Claude Opus 4.6 (Max) | 74.3 |
| 3 | O4 Mini (High) | 73.7 |
| 4 | Grok 3 Mini (High) | 73.7 |
| 5 | Claude Opus 4.5 (High) | 73.1 |
| 6 | Grok 3 Mini (Low) | 72.6 |
| 7 | Llama 3.3 70B Instruct | 72 |
| 8 | GPT-OSS-120B (High) | 72 |
| 9 | Claude Sonnet 4.5 | 71.4 |
| 10 | GPT-5 (High) | 71.4 |
| 11 | GPT-5 (Low) | 71.4 |
| 12 | GPT-5 Pro | 70.9 |
| 13 | Grok 4.1 Fast | 70.3 |
| 14 | O3 (High) | 70.3 |
Interactive version: theaggregate.ai/benchmark?slug=olfactory-perception-benchmark-odor-pleasantness · How It Works · Data refreshed daily, snapshot 2026-10-07.