GPT-OSS 120B vs Mistral 8x7B v0.2

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

Quick Verdict

GPT-OSS 120B wins overall with a score of 42 vs 20 (22 point difference).GPT-OSS 120B wins 4 out of 4 categories.

Knowledge

GPT-OSS 120B

GPT-OSS 120B

48.8

Mistral 8x7B v0.2

26.8

51
MMLU
29
50
GPQA
28
48
SuperGPQA
26
46
OpenBookQA
24

Coding

GPT-OSS 120B

GPT-OSS 120B

43

Mistral 8x7B v0.2

21

43
HumanEval
21

Mathematics

GPT-OSS 120B

GPT-OSS 120B

50

Mistral 8x7B v0.2

28

51
AIME 2023
29
53
AIME 2024
31
52
AIME 2025
30
47
HMMT Feb 2023
25
49
HMMT Feb 2024
27
48
HMMT Feb 2025
26
50
BRUMO 2025
28

Reasoning

GPT-OSS 120B

GPT-OSS 120B

48

Mistral 8x7B v0.2

26

49
SimpleQA
27
47
MuSR
25

Frequently Asked Questions

Which is better, GPT-OSS 120B or Mistral 8x7B v0.2?

GPT-OSS 120B scores higher overall with 42 vs 20, a difference of 22 points across all benchmarks.

Which is better for knowledge tasks, GPT-OSS 120B or Mistral 8x7B v0.2?

GPT-OSS 120B leads in knowledge tasks with an average score of 48.8 vs 26.8.

Which is better for coding, GPT-OSS 120B or Mistral 8x7B v0.2?

GPT-OSS 120B leads in coding with an average score of 43 vs 21.

Which is better for math, GPT-OSS 120B or Mistral 8x7B v0.2?

GPT-OSS 120B leads in math with an average score of 50 vs 28.

Which is better for reasoning, GPT-OSS 120B or Mistral 8x7B v0.2?

GPT-OSS 120B leads in reasoning with an average score of 48 vs 26.