benchlm.ai

DeepSeek V3.1 vs GPT-5 mini

Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.

Quick Verdict

GPT-5 mini wins overall with a score of 68 vs 24 (44 point difference).GPT-5 mini wins 4 out of 4 categories.

DeepSeek V3.1

CreatorDeepSeek
TypeOpen Weight
Context128K
Score24

GPT-5 mini

CreatorOpenAI
TypeProprietary
Context128K
Score68

Knowledge

GPT-5 mini

DeepSeek V3.1

30.8

GPT-5 mini

85

33
MMLU
88
32
GPQA
86
30
SuperGPQA
84
28
OpenBookQA
82

Coding

GPT-5 mini

DeepSeek V3.1

25

GPT-5 mini

80

25
HumanEval
80

Mathematics

GPT-5 mini

DeepSeek V3.1

32

GPT-5 mini

89

33
AIME 2023
90
35
AIME 2024
92
34
AIME 2025
91
29
HMMT Feb 2023
86
31
HMMT Feb 2024
88
30
HMMT Feb 2025
87
32
BRUMO 2025
89

Reasoning

GPT-5 mini

DeepSeek V3.1

30

GPT-5 mini

83

31
SimpleQA
84
29
MuSR
82

Frequently Asked Questions

Which is better, DeepSeek V3.1 or GPT-5 mini?

GPT-5 mini scores higher overall with 68 vs 24, a difference of 44 points across all benchmarks.

Which is better for knowledge tasks, DeepSeek V3.1 or GPT-5 mini?

GPT-5 mini leads in knowledge tasks with an average score of 85 vs 30.8.

Which is better for coding, DeepSeek V3.1 or GPT-5 mini?

GPT-5 mini leads in coding with an average score of 80 vs 25.

Which is better for math, DeepSeek V3.1 or GPT-5 mini?

GPT-5 mini leads in math with an average score of 89 vs 32.

Which is better for reasoning, DeepSeek V3.1 or GPT-5 mini?

GPT-5 mini leads in reasoning with an average score of 83 vs 30.

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