benchlm.ai

Claude Sonnet 4.5 vs DeepSeek-R1

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 35 (39 point difference).Claude Sonnet 4.5 wins 4 out of 4 categories.

Claude Sonnet 4.5

CreatorAnthropic
TypeProprietary
Context1M
Score74

DeepSeek-R1

CreatorDeepSeek
TypeOpen Weight
Context128K
Score35

Knowledge

Claude Sonnet 4.5

Claude Sonnet 4.5

92

DeepSeek-R1

41.8

95
MMLU
44
93
GPQA
43
91
SuperGPQA
41
89
OpenBookQA
39

Coding

Claude Sonnet 4.5

Claude Sonnet 4.5

87

DeepSeek-R1

36

87
HumanEval
36

Mathematics

Claude Sonnet 4.5

Claude Sonnet 4.5

96

DeepSeek-R1

43

97
AIME 2023
44
99
AIME 2024
46
98
AIME 2025
45
93
HMMT Feb 2023
40
95
HMMT Feb 2024
42
94
HMMT Feb 2025
41
96
BRUMO 2025
43

Reasoning

Claude Sonnet 4.5

Claude Sonnet 4.5

90

DeepSeek-R1

41

91
SimpleQA
42
89
MuSR
40

Frequently Asked Questions

Which is better, Claude Sonnet 4.5 or DeepSeek-R1?

Claude Sonnet 4.5 scores higher overall with 74 vs 35, a difference of 39 points across all benchmarks.

Which is better for knowledge tasks, Claude Sonnet 4.5 or DeepSeek-R1?

Claude Sonnet 4.5 leads in knowledge tasks with an average score of 92 vs 41.8.

Which is better for coding, Claude Sonnet 4.5 or DeepSeek-R1?

Claude Sonnet 4.5 leads in coding with an average score of 87 vs 36.

Which is better for math, Claude Sonnet 4.5 or DeepSeek-R1?

Claude Sonnet 4.5 leads in math with an average score of 96 vs 43.

Which is better for reasoning, Claude Sonnet 4.5 or DeepSeek-R1?

Claude Sonnet 4.5 leads in reasoning with an average score of 90 vs 41.

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