GPT-OSS 120B vs Mistral Large 2

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

Quick Verdict

Mistral Large 2 wins overall with a score of 57 vs 42 (15 point difference).Mistral Large 2 wins 4 out of 4 categories.

Knowledge

Mistral Large 2

GPT-OSS 120B

48.8

Mistral Large 2

66.5

51
MMLU
68
50
GPQA
68
48
SuperGPQA
66
46
OpenBookQA
64

Coding

Mistral Large 2

GPT-OSS 120B

43

Mistral Large 2

60

43
HumanEval
60

Mathematics

Mistral Large 2

GPT-OSS 120B

50

Mistral Large 2

67

51
AIME 2023
68
53
AIME 2024
70
52
AIME 2025
69
47
HMMT Feb 2023
64
49
HMMT Feb 2024
66
48
HMMT Feb 2025
65
50
BRUMO 2025
67

Reasoning

Mistral Large 2

GPT-OSS 120B

48

Mistral Large 2

65

49
SimpleQA
66
47
MuSR
64

Frequently Asked Questions

Which is better, GPT-OSS 120B or Mistral Large 2?

Mistral Large 2 scores higher overall with 57 vs 42, a difference of 15 points across all benchmarks.

Which is better for knowledge tasks, GPT-OSS 120B or Mistral Large 2?

Mistral Large 2 leads in knowledge tasks with an average score of 66.5 vs 48.8.

Which is better for coding, GPT-OSS 120B or Mistral Large 2?

Mistral Large 2 leads in coding with an average score of 60 vs 43.

Which is better for math, GPT-OSS 120B or Mistral Large 2?

Mistral Large 2 leads in math with an average score of 67 vs 50.

Which is better for reasoning, GPT-OSS 120B or Mistral Large 2?

Mistral Large 2 leads in reasoning with an average score of 65 vs 48.