Claude Haiku 4.5 vs Gemini 2.5 Pro

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

Quick Verdict

Gemini 2.5 Pro wins overall with a score of 65 vs 57 (8 point difference).Gemini 2.5 Pro wins 4 out of 4 categories.

Knowledge

Gemini 2.5 Pro

Claude Haiku 4.5

65.8

Gemini 2.5 Pro

81.5

68
MMLU
83
67
GPQA
83
65
SuperGPQA
81
63
OpenBookQA
79

Coding

Gemini 2.5 Pro

Claude Haiku 4.5

60

Gemini 2.5 Pro

75

60
HumanEval
75

Mathematics

Gemini 2.5 Pro

Claude Haiku 4.5

67

Gemini 2.5 Pro

83

68
AIME 2023
84
70
AIME 2024
86
69
AIME 2025
85
64
HMMT Feb 2023
80
66
HMMT Feb 2024
82
65
HMMT Feb 2025
81
67
BRUMO 2025
83

Reasoning

Gemini 2.5 Pro

Claude Haiku 4.5

64

Gemini 2.5 Pro

80

65
SimpleQA
81
63
MuSR
79

Frequently Asked Questions

Which is better, Claude Haiku 4.5 or Gemini 2.5 Pro?

Gemini 2.5 Pro scores higher overall with 65 vs 57, a difference of 8 points across all benchmarks.

Which is better for knowledge tasks, Claude Haiku 4.5 or Gemini 2.5 Pro?

Gemini 2.5 Pro leads in knowledge tasks with an average score of 81.5 vs 65.8.

Which is better for coding, Claude Haiku 4.5 or Gemini 2.5 Pro?

Gemini 2.5 Pro leads in coding with an average score of 75 vs 60.

Which is better for math, Claude Haiku 4.5 or Gemini 2.5 Pro?

Gemini 2.5 Pro leads in math with an average score of 83 vs 67.

Which is better for reasoning, Claude Haiku 4.5 or Gemini 2.5 Pro?

Gemini 2.5 Pro leads in reasoning with an average score of 80 vs 64.