Claude 3 Haiku vs o1-pro

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

Claude 3 Haiku is clearly ahead on the aggregate, 51 to 33. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

o1-pro is the reasoning model in the pair, while Claude 3 Haiku is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use.

Quick Verdict

Pick Claude 3 Haiku if you want the stronger benchmark profile. o1-pro only becomes the better choice if knowledge is the priority or you want the stronger reasoning-first profile.

Knowledge

o1-pro

Claude 3 Haiku

47.2

o1-pro

79

56
MMLU
-
56
GPQA
79
54
SuperGPQA
-
52
OpenBookQA
-
63
MMLU-Pro
-
2
HLE
-

Coding

Claude 3 Haiku
48
HumanEval
-
17
SWE-bench Verified
-
20
LiveCodeBench
-

Mathematics

o1-pro

Claude 3 Haiku

57

o1-pro

86

56
AIME 2023
-
58
AIME 2024
86
57
AIME 2025
-
52
HMMT Feb 2023
-
54
HMMT Feb 2024
-
53
HMMT Feb 2025
-
55
BRUMO 2025
-
71
MATH-500
-

Reasoning

Claude 3 Haiku
54
SimpleQA
-
52
MuSR
-
74
BBH
-

Instruction Following

Claude 3 Haiku
76
IFEval
-

Multilingual

Claude 3 Haiku
73
MGSM
-

Frequently Asked Questions

Which is better, Claude 3 Haiku or o1-pro?

Claude 3 Haiku is ahead overall, 51 to 33. The biggest single separator in this matchup is AIME 2024, where the scores are 58 and 86.

Which is better for knowledge tasks, Claude 3 Haiku or o1-pro?

o1-pro has the edge for knowledge tasks in this comparison, averaging 79 versus 47.2. Inside this category, GPQA is the benchmark that creates the most daylight between them.

Which is better for math, Claude 3 Haiku or o1-pro?

o1-pro has the edge for math in this comparison, averaging 86 versus 57. Inside this category, AIME 2024 is the benchmark that creates the most daylight between them.

Last updated: March 9, 2026

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