Swallow - Post-trained English - GPQA Diamond: leaderboard

From the Swallow LLM Leaderboard (Institute of Science Tokyo) post-trained English board, a Swallow-harness rerun that evaluates instruction-tuned and reasoning models. GPQA Diamond graduate-level four-option science questions, zero-shot with a chain-of-thought prompt; metric is accuracy (random 25%). Upstream publishes 0-1 scores; shown as 0-100, higher is better.

Metric: Accuracy (%). Source: swallow-llm.github.io. Saturation forecast: Around February 2027. 68 models tracked.

Top models

#ModelScoreOverall rank
1GPT-5.4 (2026-03-05) (Medium)88.8#63 (GPT-5.4 (2026-03-05))
2Qwen 3.5 27B (Thinking)86.6#192 (Qwen 3.5 27B)
3Qwen 3.5 122B A10B (Thinking)86.2#184 (Qwen 3.5 122B A10B)
4Gemma 4 31B (IT) (Thinking)85.6#178 (Gemma 4 31B (IT))
5GPT-5 (Medium)84#105 (GPT-5)
6Qwen 3.5 35B A3B (Thinking)84#268 (Qwen 3.5 35B A3B)
7Qwen 3.5 9B (Thinking)82.7#391 (Qwen 3.5 9B)
8O3 (2025-04-16) (Medium)81.9#125 (O3 (2025-04-16))
9NVIDIA-Nemotron-3-Super-120B-A12B-BF16 (Thinking)81.8#394 (NVIDIA-Nemotron-3-Super-120B-A12B-BF16)
10Qwen 3 235B A22B 2507 (Thinking)79.4#263
11gemma-4-26B-A4B-it (Thinking)78.8
12Qwen 3.5 4B (Thinking)76.5#514 (Qwen 3.5 4B)
13Qwen 3 Next 80B A3B (Thinking)76.3#312
14Qwen 3 Next 80B A3B Instruct75.3#381
15O3 Mini (Medium)73.4#282 (O3 Mini)

No result here: #3 Claude Opus 5.5, #6 GPT-6 Astra, #7 GPT-6.1 Sol.

Interactive version: theaggregate.ai/benchmark?slug=swallow-post-trained-english-gpqa-diamond · How It Works · Data refreshed daily, snapshot 2026-11-05.