STEM & Reasoning Benchmark

GPQA Diamond

GPQA Diamond - Google-Proof Q&A benchmark for graduate-level scientific reasoning.

Category

STEM & Reasoning

Score type

percent

Scale

100%

higher is better

Models tested

57

What is GPQA Diamond?

GPQA Diamond is the 'diamond' subset of the Google-Proof Q&A benchmark — the hardest and cleanest part. The questions are written and checked by PhD scientists and are designed so that a skilled non-expert with full internet access can still barely get them right. The model has to answer graduate-level science questions with four multiple-choice options.

What does it test?

GPQA Diamond measures hard reasoning in science, technology, engineering and math. In detail, it checks:

  • expert-level physics, chemistry and biology knowledge
  • real reasoning instead of memorised question patterns
  • resistance to plausible distractors
  • reliability without web access (the questions are not Googleable)

How to read the score

The score is accuracy: the percentage of tasks answered or solved correctly. 100% means every task was solved perfectly; higher is better.

Frequently asked questions

What is the GPQA Diamond benchmark?

GPQA Diamond is the 'diamond' subset of the Google-Proof Q&A benchmark — the hardest and cleanest part. The questions are written and checked by PhD scientists and are designed so that a skilled non-expert with full internet access can still barely get them right. The model has to answer graduate-level science questions with four multiple-choice options.

What does GPQA Diamond test?

GPQA Diamond mainly measures hard reasoning in science, technology, engineering and math. Concretely, it checks: expert-level physics, chemistry and biology knowledge; real reasoning instead of memorised question patterns; resistance to plausible distractors.

How is the GPQA Diamond score calculated?

The score is accuracy: the percentage of tasks answered or solved correctly. 100% means every task was solved perfectly; higher is better. The declared maximum score of this benchmark is 100.0.

Where do I get GPQA Diamond data and scores?

The official source is https://huggingface.co/datasets/Idavidrein/gpqa. The official benchmark page/reference is linked on this page. Every score on Open LLM Radar is also available as open data: download the scores JSON (http://open-llm-radar-api:8000/api/v1/benchmarks/gpqa-diamond/scores) or pull it directly from the Open LLM Radar API with any HTTP client.

Model scores 57 models tested

Reset
# Model Score Date Source Verified
1 Kimi K3.1 Pro
Moonshot AI
94.2%
07.11.2026 Report Verified
2 Kimi K3
Moonshot AI
93.5%
18.08.2026 Report Verified
3 MiniMax-M3
MiniMaxAI
93%
17.06.2026 Report Unverified
4 Qwen3.8-2.4T-A95B
Qwen
92.6%
18.08.2026 Report Verified
5 Hy4 preview
Tencent
92.3%
28.08.2026 Tencent Hy4 preview model card benchmark appendix (https://huggingface.co/tencent/Hy4-preview#benchmark-appendix) Verified
6 DeepSeek-V4.1-Flash-1017
DeepSeek
92.2%
07.11.2026 Kimi K3.1 Pro model card comparison column (max effort) https://huggingface.co/moonshotai/Kimi-K3.1-Pro Unverified
7 Qwen3.8-Flash-Next
Qwen Team (Alibaba)
91.7%
26.08.2026 Report Verified
8 GLM-5.3
Zhipu AI
91.7%
28.08.2026 Tencent Hy4 preview model card benchmark appendix (https://huggingface.co/tencent/Hy4-preview#benchmark-appendix) [provider 91.7; Tencent rerun 91.4] Verified
9 GLM-5.2
Zhipu AI
91.2%
17.06.2026 Report Verified
10 Kimi K2.6
Moonshot AI
91%
04.06.2026 Report Unverified
11 Hy3
Tencent
90.9%
28.08.2026 Tencent Hy4 preview model card benchmark appendix (https://huggingface.co/tencent/Hy4-preview#benchmark-appendix) Verified
12 DeepSeek-V4.1-Flash
DeepSeek
90.9%
10.09.2026 Report Verified
13 DeepSeek-V4-Flash-0731
DeepSeek
90.8%
26.08.2026 Report Unverified
14 DeepSeek-V4-Pro
DeepSeek
90.1%
26.06.2026 Report Verified
15 Nanbeige4.3-33B
Nanbeige
89.5%
24.10.2026 Report Verified
16 Qwen3.8-27B
Qwen Team (Alibaba Cloud)
89.2%
18.08.2026 Report Verified
17 Ornith-1.5-35B-A3B
Ornith AI
89.2%
19.08.2026 Report Verified
18 Muse-Spark-Open-816B-A42B
Meta Superintelligence Lab
89%
15.10.2026 Report Verified
19 DeepSeek-V4-Flash
DeepSeek
88.1%
26.06.2026 Report Verified
20 Qwen3.6-27B
Qwen Team (Alibaba Cloud)
87.8%
22.04.2026 Qwen Team (official model card) Verified
21 DeepSeek-V4-Pro
DeepSeek
87.8%
04.06.2026 Report Unverified
22 Kimi K2.5
Moonshot AI
87.6%
23.08.2026 Report Verified
23 NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16
NVIDIA
87%
04.06.2026 Report Verified
24 Qwen3.5-122B-A10B
Qwen Team (Alibaba Cloud)
86.6%
01.02.2026 Report Verified
25 NVIDIA-Nemotron-3.5-Bolt-74B-A9B-24GB
NVIDIA
86.43%
15.10.2026 Report Verified
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What now?

You've seen how models score on GPQA Diamond — here's what to do next.