GPT-OSS 120B vs Mistral 7B v0.3

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

Quick Verdict

GPT-OSS 120B wins overall with a score of 42 vs 21 (21 point difference).GPT-OSS 120B wins 4 out of 4 categories.

Knowledge

GPT-OSS 120B

GPT-OSS 120B

48.8

Mistral 7B v0.3

27.8

51
MMLU
30
50
GPQA
29
48
SuperGPQA
27
46
OpenBookQA
25

Coding

GPT-OSS 120B

GPT-OSS 120B

43

Mistral 7B v0.3

22

43
HumanEval
22

Mathematics

GPT-OSS 120B

GPT-OSS 120B

50

Mistral 7B v0.3

29

51
AIME 2023
30
53
AIME 2024
32
52
AIME 2025
31
47
HMMT Feb 2023
26
49
HMMT Feb 2024
28
48
HMMT Feb 2025
27
50
BRUMO 2025
29

Reasoning

GPT-OSS 120B

GPT-OSS 120B

48

Mistral 7B v0.3

27

49
SimpleQA
28
47
MuSR
26

Frequently Asked Questions

Which is better, GPT-OSS 120B or Mistral 7B v0.3?

GPT-OSS 120B scores higher overall with 42 vs 21, a difference of 21 points across all benchmarks.

Which is better for knowledge tasks, GPT-OSS 120B or Mistral 7B v0.3?

GPT-OSS 120B leads in knowledge tasks with an average score of 48.8 vs 27.8.

Which is better for coding, GPT-OSS 120B or Mistral 7B v0.3?

GPT-OSS 120B leads in coding with an average score of 43 vs 22.

Which is better for math, GPT-OSS 120B or Mistral 7B v0.3?

GPT-OSS 120B leads in math with an average score of 50 vs 29.

Which is better for reasoning, GPT-OSS 120B or Mistral 7B v0.3?

GPT-OSS 120B leads in reasoning with an average score of 48 vs 27.