benchlm.ai

Claude Haiku 4.5 vs Claude Sonnet 4.6

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

Quick Verdict

Claude Sonnet 4.6 wins overall with a score of 80 vs 57 (23 point difference).Claude Sonnet 4.6 wins 4 out of 4 categories.

Claude Haiku 4.5

CreatorAnthropic
TypeProprietary
Context200K
Score57

Claude Sonnet 4.6

CreatorAnthropic
TypeProprietary
Context1M
Score80

Knowledge

Claude Sonnet 4.6

Claude Haiku 4.5

65.8

Claude Sonnet 4.6

96

68
MMLU
99
67
GPQA
97
65
SuperGPQA
95
63
OpenBookQA
93

Coding

Claude Sonnet 4.6

Claude Haiku 4.5

60

Claude Sonnet 4.6

93

60
HumanEval
93

Mathematics

Claude Sonnet 4.6

Claude Haiku 4.5

67

Claude Sonnet 4.6

97.1

68
AIME 2023
99
70
AIME 2024
99
69
AIME 2025
98
64
HMMT Feb 2023
95
66
HMMT Feb 2024
97
65
HMMT Feb 2025
96
67
BRUMO 2025
96

Reasoning

Claude Sonnet 4.6

Claude Haiku 4.5

64

Claude Sonnet 4.6

94

65
SimpleQA
95
63
MuSR
93

Frequently Asked Questions

Which is better, Claude Haiku 4.5 or Claude Sonnet 4.6?

Claude Sonnet 4.6 scores higher overall with 80 vs 57, a difference of 23 points across all benchmarks.

Which is better for knowledge tasks, Claude Haiku 4.5 or Claude Sonnet 4.6?

Claude Sonnet 4.6 leads in knowledge tasks with an average score of 96 vs 65.8.

Which is better for coding, Claude Haiku 4.5 or Claude Sonnet 4.6?

Claude Sonnet 4.6 leads in coding with an average score of 93 vs 60.

Which is better for math, Claude Haiku 4.5 or Claude Sonnet 4.6?

Claude Sonnet 4.6 leads in math with an average score of 97.1 vs 67.

Which is better for reasoning, Claude Haiku 4.5 or Claude Sonnet 4.6?

Claude Sonnet 4.6 leads in reasoning with an average score of 94 vs 64.

Related Comparisons

Claude Haiku 4.5 vs GPT-5.4Claude Haiku 4.5 vs Gemini 3.1 ProClaude Haiku 4.5 vs Claude Opus 4.6Claude Haiku 4.5 vs GPT-5.3 CodexClaude Haiku 4.5 vs Grok 4.1Claude Haiku 4.5 vs GPT-5.2