o3 Benchmark Scores & Performance

Benchmark analysis of o3 by OpenAI across 14 tests.

Creator

OpenAI

Source Type

Proprietary

Reasoning

Reasoning

Context Window

200K

Overall Score

67#27 of 88

Knowledge Benchmarks

MMLU
86
GPQA
87
SuperGPQA
85
OpenBookQA
83

Coding Benchmarks

HumanEval
78

Mathematics Benchmarks

AIME 2023
88
AIME 2024
90
AIME 2025
89
HMMT Feb 2023
84
HMMT Feb 2024
86
HMMT Feb 2025
85
BRUMO 2025
87

Reasoning Benchmarks

SimpleQA
84
MuSR
82

Frequently Asked Questions

How does o3 perform overall in AI benchmarks?

o3 ranks #27 out of 88 models with an overall score of 67. It is created by OpenAI and features a 200K context window.

Is o3 good for knowledge and understanding?

o3 ranks #23 out of 88 models in knowledge and understanding benchmarks with an average score of 85.3. There are stronger options in this category.

Is o3 good for coding and programming?

o3 ranks #28 out of 88 models in coding and programming benchmarks with an average score of 78. There are stronger options in this category.

Is o3 good for mathematics?

o3 ranks #24 out of 88 models in mathematics benchmarks with an average score of 87. There are stronger options in this category.

Is o3 good for reasoning and logic?

o3 ranks #24 out of 88 models in reasoning and logic benchmarks with an average score of 83. There are stronger options in this category.

What is the context window size of o3?

o3 has a context window of 200K tokens, which determines how much text it can process in a single interaction.