benchlm.ai

Claude 4.1 Opus vs Claude Haiku 4.5

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

Quick Verdict

Claude 4.1 Opus wins overall with a score of 61 vs 57 (4 point difference).Claude 4.1 Opus wins 4 out of 4 categories.

Claude 4.1 Opus

CreatorAnthropic
TypeProprietary
Context200K
Score61

Claude Haiku 4.5

CreatorAnthropic
TypeProprietary
Context200K
Score57

Knowledge

Claude 4.1 Opus

Claude 4.1 Opus

74.5

Claude Haiku 4.5

65.8

76
MMLU
68
76
GPQA
67
74
SuperGPQA
65
72
OpenBookQA
63

Coding

Claude 4.1 Opus

Claude 4.1 Opus

68

Claude Haiku 4.5

60

68
HumanEval
60

Mathematics

Claude 4.1 Opus

Claude 4.1 Opus

75

Claude Haiku 4.5

67

76
AIME 2023
68
78
AIME 2024
70
77
AIME 2025
69
72
HMMT Feb 2023
64
74
HMMT Feb 2024
66
73
HMMT Feb 2025
65
75
BRUMO 2025
67

Reasoning

Claude 4.1 Opus

Claude 4.1 Opus

73

Claude Haiku 4.5

64

74
SimpleQA
65
72
MuSR
63

Frequently Asked Questions

Which is better, Claude 4.1 Opus or Claude Haiku 4.5?

Claude 4.1 Opus scores higher overall with 61 vs 57, a difference of 4 points across all benchmarks.

Which is better for knowledge tasks, Claude 4.1 Opus or Claude Haiku 4.5?

Claude 4.1 Opus leads in knowledge tasks with an average score of 74.5 vs 65.8.

Which is better for coding, Claude 4.1 Opus or Claude Haiku 4.5?

Claude 4.1 Opus leads in coding with an average score of 68 vs 60.

Which is better for math, Claude 4.1 Opus or Claude Haiku 4.5?

Claude 4.1 Opus leads in math with an average score of 75 vs 67.

Which is better for reasoning, Claude 4.1 Opus or Claude Haiku 4.5?

Claude 4.1 Opus leads in reasoning with an average score of 73 vs 64.

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