DeepSeek Coder 2.0 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 64 (1 point difference).Qwen3.5 397B wins 3 out of 4 categories.

Knowledge

Qwen3.5 397B

DeepSeek Coder 2.0

77.8

Qwen3.5 397B

80.8

80
MMLU
83
79
GPQA
82
77
SuperGPQA
80
75
OpenBookQA
78

Coding

DeepSeek Coder 2.0

DeepSeek Coder 2.0

82

Qwen3.5 397B

75

82
HumanEval
75

Mathematics

Qwen3.5 397B

DeepSeek Coder 2.0

80

Qwen3.5 397B

82

81
AIME 2023
83
83
AIME 2024
85
82
AIME 2025
84
77
HMMT Feb 2023
79
79
HMMT Feb 2024
81
78
HMMT Feb 2025
80
80
BRUMO 2025
82

Reasoning

Qwen3.5 397B

DeepSeek Coder 2.0

77

Qwen3.5 397B

79

78
SimpleQA
80
76
MuSR
78

Frequently Asked Questions

Which is better, DeepSeek Coder 2.0 or Qwen3.5 397B?

Qwen3.5 397B scores higher overall with 65 vs 64, a difference of 1 points across all benchmarks.

Which is better for knowledge tasks, DeepSeek Coder 2.0 or Qwen3.5 397B?

Qwen3.5 397B leads in knowledge tasks with an average score of 80.8 vs 77.8.

Which is better for coding, DeepSeek Coder 2.0 or Qwen3.5 397B?

DeepSeek Coder 2.0 leads in coding with an average score of 82 vs 75.

Which is better for math, DeepSeek Coder 2.0 or Qwen3.5 397B?

Qwen3.5 397B leads in math with an average score of 82 vs 80.

Which is better for reasoning, DeepSeek Coder 2.0 or Qwen3.5 397B?

Qwen3.5 397B leads in reasoning with an average score of 79 vs 77.