DeepSeek V3.1 (Reasoning) vs o3

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

Quick Verdict

o3 wins overall with a score of 67 vs 25 (42 point difference).o3 wins 4 out of 4 categories.

Knowledge

o3

DeepSeek V3.1 (Reasoning)

31.8

o3

85.3

34
MMLU
86
33
GPQA
87
31
SuperGPQA
85
29
OpenBookQA
83

Coding

o3

DeepSeek V3.1 (Reasoning)

26

o3

78

26
HumanEval
78

Mathematics

o3

DeepSeek V3.1 (Reasoning)

33

o3

87

34
AIME 2023
88
36
AIME 2024
90
35
AIME 2025
89
30
HMMT Feb 2023
84
32
HMMT Feb 2024
86
31
HMMT Feb 2025
85
33
BRUMO 2025
87

Reasoning

o3

DeepSeek V3.1 (Reasoning)

31

o3

83

32
SimpleQA
84
30
MuSR
82

Frequently Asked Questions

Which is better, DeepSeek V3.1 (Reasoning) or o3?

o3 scores higher overall with 67 vs 25, a difference of 42 points across all benchmarks.

Which is better for knowledge tasks, DeepSeek V3.1 (Reasoning) or o3?

o3 leads in knowledge tasks with an average score of 85.3 vs 31.8.

Which is better for coding, DeepSeek V3.1 (Reasoning) or o3?

o3 leads in coding with an average score of 78 vs 26.

Which is better for math, DeepSeek V3.1 (Reasoning) or o3?

o3 leads in math with an average score of 87 vs 33.

Which is better for reasoning, DeepSeek V3.1 (Reasoning) or o3?

o3 leads in reasoning with an average score of 83 vs 31.