GPT-OSS 120B vs MiniMax M2.5

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

Quick Verdict

MiniMax M2.5 wins overall with a score of 59 vs 42 (17 point difference).MiniMax M2.5 wins 4 out of 4 categories.

Knowledge

MiniMax M2.5

GPT-OSS 120B

48.8

MiniMax M2.5

70.8

51
MMLU
73
50
GPQA
72
48
SuperGPQA
70
46
OpenBookQA
68

Coding

MiniMax M2.5

GPT-OSS 120B

43

MiniMax M2.5

65

43
HumanEval
65

Mathematics

MiniMax M2.5

GPT-OSS 120B

50

MiniMax M2.5

72

51
AIME 2023
73
53
AIME 2024
75
52
AIME 2025
74
47
HMMT Feb 2023
69
49
HMMT Feb 2024
71
48
HMMT Feb 2025
70
50
BRUMO 2025
72

Reasoning

MiniMax M2.5

GPT-OSS 120B

48

MiniMax M2.5

69

49
SimpleQA
70
47
MuSR
68

Frequently Asked Questions

Which is better, GPT-OSS 120B or MiniMax M2.5?

MiniMax M2.5 scores higher overall with 59 vs 42, a difference of 17 points across all benchmarks.

Which is better for knowledge tasks, GPT-OSS 120B or MiniMax M2.5?

MiniMax M2.5 leads in knowledge tasks with an average score of 70.8 vs 48.8.

Which is better for coding, GPT-OSS 120B or MiniMax M2.5?

MiniMax M2.5 leads in coding with an average score of 65 vs 43.

Which is better for math, GPT-OSS 120B or MiniMax M2.5?

MiniMax M2.5 leads in math with an average score of 72 vs 50.

Which is better for reasoning, GPT-OSS 120B or MiniMax M2.5?

MiniMax M2.5 leads in reasoning with an average score of 69 vs 48.