GPT-OSS 120B vs Mistral 8x7B

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

Quick Verdict

Mistral 8x7B wins overall with a score of 52 vs 42 (10 point difference).Mistral 8x7B wins 4 out of 4 categories.

Knowledge

Mistral 8x7B

GPT-OSS 120B

48.8

Mistral 8x7B

62.8

51
MMLU
65
50
GPQA
64
48
SuperGPQA
62
46
OpenBookQA
60

Coding

Mistral 8x7B

GPT-OSS 120B

43

Mistral 8x7B

55

43
HumanEval
55

Mathematics

Mistral 8x7B

GPT-OSS 120B

50

Mistral 8x7B

64

51
AIME 2023
65
53
AIME 2024
67
52
AIME 2025
66
47
HMMT Feb 2023
61
49
HMMT Feb 2024
63
48
HMMT Feb 2025
62
50
BRUMO 2025
64

Reasoning

Mistral 8x7B

GPT-OSS 120B

48

Mistral 8x7B

62

49
SimpleQA
63
47
MuSR
61

Frequently Asked Questions

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

Mistral 8x7B scores higher overall with 52 vs 42, a difference of 10 points across all benchmarks.

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

Mistral 8x7B leads in knowledge tasks with an average score of 62.8 vs 48.8.

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

Mistral 8x7B leads in coding with an average score of 55 vs 43.

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

Mistral 8x7B leads in math with an average score of 64 vs 50.

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

Mistral 8x7B leads in reasoning with an average score of 62 vs 48.