Llama 3 70B vs o3

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

Quick Verdict

o3 wins overall with a score of 67 vs 48 (19 point difference).o3 wins 4 out of 4 categories.

Knowledge

o3

Llama 3 70B

56.5

o3

85.3

58
MMLU
86
58
GPQA
87
56
SuperGPQA
85
54
OpenBookQA
83

Coding

o3

Llama 3 70B

50

o3

78

50
HumanEval
78

Mathematics

o3

Llama 3 70B

57

o3

87

58
AIME 2023
88
60
AIME 2024
90
59
AIME 2025
89
54
HMMT Feb 2023
84
56
HMMT Feb 2024
86
55
HMMT Feb 2025
85
57
BRUMO 2025
87

Reasoning

o3

Llama 3 70B

55

o3

83

56
SimpleQA
84
54
MuSR
82

Frequently Asked Questions

Which is better, Llama 3 70B or o3?

o3 scores higher overall with 67 vs 48, a difference of 19 points across all benchmarks.

Which is better for knowledge tasks, Llama 3 70B or o3?

o3 leads in knowledge tasks with an average score of 85.3 vs 56.5.

Which is better for coding, Llama 3 70B or o3?

o3 leads in coding with an average score of 78 vs 50.

Which is better for math, Llama 3 70B or o3?

o3 leads in math with an average score of 87 vs 57.

Which is better for reasoning, Llama 3 70B or o3?

o3 leads in reasoning with an average score of 83 vs 55.