SoundnessBench: leaderboard
Metric: Macro-F1 (%; high vs low soundness of 1,099 results-masked ICLR proposals, standard prompt). Source: arxiv.org. Saturation forecast: Around March 2027. 12 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | GPT-5.4 | 69.7 |
| 2 | Claude Sonnet 4.6 | 65.3 |
| 3 | GPT-5.4 Mini | 63.8 |
| 4 | Claude Opus 4.6 | 60.5 |
| 5 | Gemini 3.1 Pro (Preview) | 58.4 |
| 6 | Qwen 3.5 122B A10B | 56.3 |
| 7 | Qwen 3.5 27B | 55.1 |
| 8 | Gemini 3 Flash | 54.5 |
| 9 | Gemini 2.5 Pro | 49.8 |
| 10 | GPT-4o | 42.3 |
| 11 | Llama 3.3 70B Instruct | 38.9 |
Interactive version: theaggregate.ai/benchmark?slug=soundnessbench · How It Works · Data refreshed daily, snapshot 2026-09-25.