benchlm.ai

Claude 3 Haiku vs Claude Haiku 4.5

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

Quick Verdict

Claude Haiku 4.5 wins overall with a score of 57 vs 46 (11 point difference).Claude Haiku 4.5 wins 4 out of 4 categories.

Claude 3 Haiku

CreatorAnthropic
TypeProprietary
Context200K
Score46

Claude Haiku 4.5

CreatorAnthropic
TypeProprietary
Context200K
Score57

Knowledge

Claude Haiku 4.5

Claude 3 Haiku

54.5

Claude Haiku 4.5

65.8

56
MMLU
68
56
GPQA
67
54
SuperGPQA
65
52
OpenBookQA
63

Coding

Claude Haiku 4.5

Claude 3 Haiku

48

Claude Haiku 4.5

60

48
HumanEval
60

Mathematics

Claude Haiku 4.5

Claude 3 Haiku

55

Claude Haiku 4.5

67

56
AIME 2023
68
58
AIME 2024
70
57
AIME 2025
69
52
HMMT Feb 2023
64
54
HMMT Feb 2024
66
53
HMMT Feb 2025
65
55
BRUMO 2025
67

Reasoning

Claude Haiku 4.5

Claude 3 Haiku

53

Claude Haiku 4.5

64

54
SimpleQA
65
52
MuSR
63

Frequently Asked Questions

Which is better, Claude 3 Haiku or Claude Haiku 4.5?

Claude Haiku 4.5 scores higher overall with 57 vs 46, a difference of 11 points across all benchmarks.

Which is better for knowledge tasks, Claude 3 Haiku or Claude Haiku 4.5?

Claude Haiku 4.5 leads in knowledge tasks with an average score of 65.8 vs 54.5.

Which is better for coding, Claude 3 Haiku or Claude Haiku 4.5?

Claude Haiku 4.5 leads in coding with an average score of 60 vs 48.

Which is better for math, Claude 3 Haiku or Claude Haiku 4.5?

Claude Haiku 4.5 leads in math with an average score of 67 vs 55.

Which is better for reasoning, Claude 3 Haiku or Claude Haiku 4.5?

Claude Haiku 4.5 leads in reasoning with an average score of 64 vs 53.

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