ScienceArena - IChO 2025: leaderboard
The International Chemistry Olympiad 2025 theory exam in ScienceArena (Zhao et al., 2026), solved one subpart at a time from text renderings of the questions. Points out of 60, awarded by an LLM judge applying the official process-credit rubric, calibrated against medalist grading; higher is better.
Metric: Score (out of 60): points awarded on the International Chemistry Olympiad 2025 theory problems, text-only question renderings; interleaved solving, one subpart at a time with earlier turns in context; open-ended physics and chemistry turns graded against the official solution and process-credit rubric by the authors' medalist-calibrated LLM-judge pipeline. Source: arxiv.org. Saturation forecast: Around February 2027. 14 models tracked.
Top models
| # | Model | Score | Overall rank |
|---|---|---|---|
| 1 | Gemini 3.1 Pro (Preview) | 48.95 | #94 |
| 2 | Gemini 3.5 Flash | 47.98 | #101 |
| 3 | Gemini 3 Flash | 44.74 | #164 |
| 4 | Claude Opus 4.7 | 44.49 | #79 |
| 5 | Qwen 3.7 Max | 41.28 | #145 |
| 6 | GLM-5.1 | 38.82 | #179 |
| 7 | DeepSeek V4 Flash | 38.33 | #258 |
| 8 | Seed 2.0 Pro | 37.14 | #211 |
| 9 | Qwen 3.6 Plus | 36.22 | #222 |
| 10 | DeepSeek V4 Pro | 35.82 | #188 |
| 11 | GPT-5.5 | 35.77 | #49 |
| 12 | GPT-5.4 | 31.7 | #123 |
| 13 | MiMo-V2.5-Pro | 28.94 | #279 |
| 14 | MiniMax-M2.7 | 26.06 | #518 |
No result here: #1 Claude Fable 5.2, #2 Gemini 4 Carbon, #5 Claude Opus 5.5.
Interactive version: theaggregate.ai/benchmark?slug=sciencearena-icho-2025 · How It Works · Data refreshed daily, snapshot 2026-11-13.