Claude Sonnet 4.5 vs DeepSeek Coder 2.0

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 64 (10 point difference).Claude Sonnet 4.5 wins 4 out of 4 categories.

Knowledge

Claude Sonnet 4.5

Claude Sonnet 4.5

92

DeepSeek Coder 2.0

77.8

95
MMLU
80
93
GPQA
79
91
SuperGPQA
77
89
OpenBookQA
75

Coding

Claude Sonnet 4.5

Claude Sonnet 4.5

87

DeepSeek Coder 2.0

82

87
HumanEval
82

Mathematics

Claude Sonnet 4.5

Claude Sonnet 4.5

96

DeepSeek Coder 2.0

80

97
AIME 2023
81
99
AIME 2024
83
98
AIME 2025
82
93
HMMT Feb 2023
77
95
HMMT Feb 2024
79
94
HMMT Feb 2025
78
96
BRUMO 2025
80

Reasoning

Claude Sonnet 4.5

Claude Sonnet 4.5

90

DeepSeek Coder 2.0

77

91
SimpleQA
78
89
MuSR
76

Frequently Asked Questions

Which is better, Claude Sonnet 4.5 or DeepSeek Coder 2.0?

Claude Sonnet 4.5 scores higher overall with 74 vs 64, a difference of 10 points across all benchmarks.

Which is better for knowledge tasks, Claude Sonnet 4.5 or DeepSeek Coder 2.0?

Claude Sonnet 4.5 leads in knowledge tasks with an average score of 92 vs 77.8.

Which is better for coding, Claude Sonnet 4.5 or DeepSeek Coder 2.0?

Claude Sonnet 4.5 leads in coding with an average score of 87 vs 82.

Which is better for math, Claude Sonnet 4.5 or DeepSeek Coder 2.0?

Claude Sonnet 4.5 leads in math with an average score of 96 vs 80.

Which is better for reasoning, Claude Sonnet 4.5 or DeepSeek Coder 2.0?

Claude Sonnet 4.5 leads in reasoning with an average score of 90 vs 77.