Claude 4.1 Opus vs Qwen3.5 397B (Reasoning)

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

Quick Verdict

Qwen3.5 397B (Reasoning) wins overall with a score of 70 vs 61 (9 point difference).Qwen3.5 397B (Reasoning) wins 4 out of 4 categories.

Knowledge

Qwen3.5 397B (Reasoning)

Claude 4.1 Opus

74.5

Qwen3.5 397B (Reasoning)

88

76
MMLU
91
76
GPQA
89
74
SuperGPQA
87
72
OpenBookQA
85

Coding

Qwen3.5 397B (Reasoning)

Claude 4.1 Opus

68

Qwen3.5 397B (Reasoning)

83

68
HumanEval
83

Mathematics

Qwen3.5 397B (Reasoning)

Claude 4.1 Opus

75

Qwen3.5 397B (Reasoning)

92

76
AIME 2023
93
78
AIME 2024
95
77
AIME 2025
94
72
HMMT Feb 2023
89
74
HMMT Feb 2024
91
73
HMMT Feb 2025
90
75
BRUMO 2025
92

Reasoning

Qwen3.5 397B (Reasoning)

Claude 4.1 Opus

73

Qwen3.5 397B (Reasoning)

86

74
SimpleQA
87
72
MuSR
85

Frequently Asked Questions

Which is better, Claude 4.1 Opus or Qwen3.5 397B (Reasoning)?

Qwen3.5 397B (Reasoning) scores higher overall with 70 vs 61, a difference of 9 points across all benchmarks.

Which is better for knowledge tasks, Claude 4.1 Opus or Qwen3.5 397B (Reasoning)?

Qwen3.5 397B (Reasoning) leads in knowledge tasks with an average score of 88 vs 74.5.

Which is better for coding, Claude 4.1 Opus or Qwen3.5 397B (Reasoning)?

Qwen3.5 397B (Reasoning) leads in coding with an average score of 83 vs 68.

Which is better for math, Claude 4.1 Opus or Qwen3.5 397B (Reasoning)?

Qwen3.5 397B (Reasoning) leads in math with an average score of 92 vs 75.

Which is better for reasoning, Claude 4.1 Opus or Qwen3.5 397B (Reasoning)?

Qwen3.5 397B (Reasoning) leads in reasoning with an average score of 86 vs 73.