Compare · ModelsLive · 2 picked · head to head
o3 vs o3 Mini
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
o3 wins on 13/14 benchmarks
o3 wins 13 of 14 shared benchmarks. Leads in coding · reasoning · knowledge.
Category leads
coding·o3reasoning·o3knowledge·o3math·o3
Hype vs Reality
Attention vs performance
o3
#67 by perf·no signal
o3 Mini
#149 by perf·no signal
Best value
o3 Mini
1.3x better value than o3
o3
11.0 pts/$
$5.00/M
o3 Mini
14.0 pts/$
$2.75/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
14 benchmarks · 2 models
o3o3 Mini
Aider polyglot
o3 leads by +20.9
Aider Polyglot · measures how well AI models can edit code across multiple programming languages using the Aider coding assistant framework.
o3
81.3
o3 Mini
60.4
ARC-AGI
o3 leads by +26.3
ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization.
o3
60.8
o3 Mini
34.5
ARC-AGI-2
o3 leads by +3.5
ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data.
o3
6.5
o3 Mini
3.0
CadEval
o3 leads by +20.0
CadEval · evaluates the ability to generate and reason about Computer-Aided Design code, testing spatial reasoning and engineering knowledge.
o3
74.0
o3 Mini
54.0
Fiction.LiveBench
o3 leads by +38.9
Fiction.LiveBench · a continuously updated benchmark using recently published fiction to test reading comprehension and reasoning, preventing data contamination.
o3
88.9
o3 Mini
50.0
FrontierMath-2025-02-28-Private
o3 leads by +6.3
FrontierMath (Feb 2025) · original research-level math problems created by mathematicians, testing capabilities at the boundary of current AI mathematical reasoning.
o3
18.7
o3 Mini
12.4
FrontierMath-Tier-4-2025-07-01-Private
o3 Mini leads by +2.1
FrontierMath Tier 4 (Jul 2025) · the most challenging tier of frontier mathematics, containing problems that push the absolute limits of AI mathematical reasoning.
o3
2.1
o3 Mini
4.2
GPQA diamond
o3 leads by +6.4
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
o3
75.8
o3 Mini
69.4
GSO-Bench
o3 leads by +7.5
GSO-Bench · evaluates AI models on real-world open-source software engineering tasks, testing the ability to understand and resolve actual GitHub issues.
o3
8.8
o3 Mini
1.3
Lech Mazur Writing
o3 leads by +22.2
Lech Mazur Writing · evaluates creative writing ability, assessing prose quality, narrative coherence, and stylistic sophistication.
o3
83.9
o3 Mini
61.7
MATH level 5
o3 leads by +1.3
MATH Level 5 · the hardest tier of the MATH benchmark, featuring competition-level problems from AMC, AIME, and Olympiad-style mathematics.
o3
97.8
o3 Mini
96.5
OTIS Mock AIME 2024-2025
o3 leads by +7.0
OTIS Mock AIME 2024–2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
o3
83.9
o3 Mini
76.9
SimpleBench
o3 leads by +36.4
SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking.
o3
43.7
o3 Mini
7.4
WeirdML
o3 leads by +8.7
WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns.
o3
52.4
o3 Mini
43.7
Full benchmark table
| Benchmark | o3 | o3 Mini |
|---|---|---|
Aider polyglot Aider Polyglot · measures how well AI models can edit code across multiple programming languages using the Aider coding assistant framework. | 81.3 | 60.4 |
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 60.8 | 34.5 |
ARC-AGI-2 ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data. | 6.5 | 3.0 |
CadEval CadEval · evaluates the ability to generate and reason about Computer-Aided Design code, testing spatial reasoning and engineering knowledge. | 74.0 | 54.0 |
Fiction.LiveBench Fiction.LiveBench · a continuously updated benchmark using recently published fiction to test reading comprehension and reasoning, preventing data contamination. | 88.9 | 50.0 |
FrontierMath-2025-02-28-Private FrontierMath (Feb 2025) · original research-level math problems created by mathematicians, testing capabilities at the boundary of current AI mathematical reasoning. | 18.7 | 12.4 |
FrontierMath-Tier-4-2025-07-01-Private FrontierMath Tier 4 (Jul 2025) · the most challenging tier of frontier mathematics, containing problems that push the absolute limits of AI mathematical reasoning. | 2.1 | 4.2 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 75.8 | 69.4 |
GSO-Bench GSO-Bench · evaluates AI models on real-world open-source software engineering tasks, testing the ability to understand and resolve actual GitHub issues. | 8.8 | 1.3 |
Lech Mazur Writing Lech Mazur Writing · evaluates creative writing ability, assessing prose quality, narrative coherence, and stylistic sophistication. | 83.9 | 61.7 |
MATH level 5 MATH Level 5 · the hardest tier of the MATH benchmark, featuring competition-level problems from AMC, AIME, and Olympiad-style mathematics. | 97.8 | 96.5 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024–2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 83.9 | 76.9 |
SimpleBench SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking. | 43.7 | 7.4 |
WeirdML WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns. | 52.4 | 43.7 |
Pricing · per 1M tokens · projected $/mo at 10M tokens