Claude 3.5 Sonnet 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 55 (15 point difference).Qwen3.5 397B (Reasoning) wins 4 out of 4 categories.

Knowledge

Qwen3.5 397B (Reasoning)

Claude 3.5 Sonnet

63.5

Qwen3.5 397B (Reasoning)

88

65
MMLU
91
65
GPQA
89
63
SuperGPQA
87
61
OpenBookQA
85

Coding

Qwen3.5 397B (Reasoning)

Claude 3.5 Sonnet

57

Qwen3.5 397B (Reasoning)

83

57
HumanEval
83

Mathematics

Qwen3.5 397B (Reasoning)

Claude 3.5 Sonnet

64

Qwen3.5 397B (Reasoning)

92

65
AIME 2023
93
67
AIME 2024
95
66
AIME 2025
94
61
HMMT Feb 2023
89
63
HMMT Feb 2024
91
62
HMMT Feb 2025
90
64
BRUMO 2025
92

Reasoning

Qwen3.5 397B (Reasoning)

Claude 3.5 Sonnet

62

Qwen3.5 397B (Reasoning)

86

63
SimpleQA
87
61
MuSR
85

Frequently Asked Questions

Which is better, Claude 3.5 Sonnet or Qwen3.5 397B (Reasoning)?

Qwen3.5 397B (Reasoning) scores higher overall with 70 vs 55, a difference of 15 points across all benchmarks.

Which is better for knowledge tasks, Claude 3.5 Sonnet or Qwen3.5 397B (Reasoning)?

Qwen3.5 397B (Reasoning) leads in knowledge tasks with an average score of 88 vs 63.5.

Which is better for coding, Claude 3.5 Sonnet or Qwen3.5 397B (Reasoning)?

Qwen3.5 397B (Reasoning) leads in coding with an average score of 83 vs 57.

Which is better for math, Claude 3.5 Sonnet or Qwen3.5 397B (Reasoning)?

Qwen3.5 397B (Reasoning) leads in math with an average score of 92 vs 64.

Which is better for reasoning, Claude 3.5 Sonnet or Qwen3.5 397B (Reasoning)?

Qwen3.5 397B (Reasoning) leads in reasoning with an average score of 86 vs 62.