benchlm.ai

Claude Sonnet 4.5 vs DeepSeek V3.2 (Thinking)

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

Quick Verdict

Claude Sonnet 4.5 wins overall with a score of 74 vs 69 (5 point difference).Claude Sonnet 4.5 wins 4 out of 4 categories.

Claude Sonnet 4.5

CreatorAnthropic
TypeProprietary
Context1M
Score74

DeepSeek V3.2 (Thinking)

CreatorDeepSeek
TypeOpen Weight
Context128K
Score69

Knowledge

Claude Sonnet 4.5

Claude Sonnet 4.5

92

DeepSeek V3.2 (Thinking)

84

95
MMLU
87
93
GPQA
85
91
SuperGPQA
83
89
OpenBookQA
81

Coding

Claude Sonnet 4.5

Claude Sonnet 4.5

87

DeepSeek V3.2 (Thinking)

79

87
HumanEval
79

Mathematics

Claude Sonnet 4.5

Claude Sonnet 4.5

96

DeepSeek V3.2 (Thinking)

86

97
AIME 2023
87
99
AIME 2024
89
98
AIME 2025
88
93
HMMT Feb 2023
83
95
HMMT Feb 2024
85
94
HMMT Feb 2025
84
96
BRUMO 2025
86

Reasoning

Claude Sonnet 4.5

Claude Sonnet 4.5

90

DeepSeek V3.2 (Thinking)

82

91
SimpleQA
83
89
MuSR
81

Frequently Asked Questions

Which is better, Claude Sonnet 4.5 or DeepSeek V3.2 (Thinking)?

Claude Sonnet 4.5 scores higher overall with 74 vs 69, a difference of 5 points across all benchmarks.

Which is better for knowledge tasks, Claude Sonnet 4.5 or DeepSeek V3.2 (Thinking)?

Claude Sonnet 4.5 leads in knowledge tasks with an average score of 92 vs 84.

Which is better for coding, Claude Sonnet 4.5 or DeepSeek V3.2 (Thinking)?

Claude Sonnet 4.5 leads in coding with an average score of 87 vs 79.

Which is better for math, Claude Sonnet 4.5 or DeepSeek V3.2 (Thinking)?

Claude Sonnet 4.5 leads in math with an average score of 96 vs 86.

Which is better for reasoning, Claude Sonnet 4.5 or DeepSeek V3.2 (Thinking)?

Claude Sonnet 4.5 leads in reasoning with an average score of 90 vs 82.

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