DeepSeek V3.1 (Reasoning) vs Qwen3.5 397B

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

Quick Verdict

Qwen3.5 397B wins overall with a score of 65 vs 25 (40 point difference).Qwen3.5 397B wins 4 out of 4 categories.

Knowledge

Qwen3.5 397B

DeepSeek V3.1 (Reasoning)

31.8

Qwen3.5 397B

80.8

34
MMLU
83
33
GPQA
82
31
SuperGPQA
80
29
OpenBookQA
78

Coding

Qwen3.5 397B

DeepSeek V3.1 (Reasoning)

26

Qwen3.5 397B

75

26
HumanEval
75

Mathematics

Qwen3.5 397B

DeepSeek V3.1 (Reasoning)

33

Qwen3.5 397B

82

34
AIME 2023
83
36
AIME 2024
85
35
AIME 2025
84
30
HMMT Feb 2023
79
32
HMMT Feb 2024
81
31
HMMT Feb 2025
80
33
BRUMO 2025
82

Reasoning

Qwen3.5 397B

DeepSeek V3.1 (Reasoning)

31

Qwen3.5 397B

79

32
SimpleQA
80
30
MuSR
78

Frequently Asked Questions

Which is better, DeepSeek V3.1 (Reasoning) or Qwen3.5 397B?

Qwen3.5 397B scores higher overall with 65 vs 25, a difference of 40 points across all benchmarks.

Which is better for knowledge tasks, DeepSeek V3.1 (Reasoning) or Qwen3.5 397B?

Qwen3.5 397B leads in knowledge tasks with an average score of 80.8 vs 31.8.

Which is better for coding, DeepSeek V3.1 (Reasoning) or Qwen3.5 397B?

Qwen3.5 397B leads in coding with an average score of 75 vs 26.

Which is better for math, DeepSeek V3.1 (Reasoning) or Qwen3.5 397B?

Qwen3.5 397B leads in math with an average score of 82 vs 33.

Which is better for reasoning, DeepSeek V3.1 (Reasoning) or Qwen3.5 397B?

Qwen3.5 397B leads in reasoning with an average score of 79 vs 31.