DeepSeek V3.2 (Thinking) vs GPT-OSS 120B

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

Quick Verdict

DeepSeek V3.2 (Thinking) wins overall with a score of 69 vs 42 (27 point difference).DeepSeek V3.2 (Thinking) wins 4 out of 4 categories.

Knowledge

DeepSeek V3.2 (Thinking)

DeepSeek V3.2 (Thinking)

84

GPT-OSS 120B

48.8

87
MMLU
51
85
GPQA
50
83
SuperGPQA
48
81
OpenBookQA
46

Coding

DeepSeek V3.2 (Thinking)

DeepSeek V3.2 (Thinking)

79

GPT-OSS 120B

43

79
HumanEval
43

Mathematics

DeepSeek V3.2 (Thinking)

DeepSeek V3.2 (Thinking)

86

GPT-OSS 120B

50

87
AIME 2023
51
89
AIME 2024
53
88
AIME 2025
52
83
HMMT Feb 2023
47
85
HMMT Feb 2024
49
84
HMMT Feb 2025
48
86
BRUMO 2025
50

Reasoning

DeepSeek V3.2 (Thinking)

DeepSeek V3.2 (Thinking)

82

GPT-OSS 120B

48

83
SimpleQA
49
81
MuSR
47

Frequently Asked Questions

Which is better, DeepSeek V3.2 (Thinking) or GPT-OSS 120B?

DeepSeek V3.2 (Thinking) scores higher overall with 69 vs 42, a difference of 27 points across all benchmarks.

Which is better for knowledge tasks, DeepSeek V3.2 (Thinking) or GPT-OSS 120B?

DeepSeek V3.2 (Thinking) leads in knowledge tasks with an average score of 84 vs 48.8.

Which is better for coding, DeepSeek V3.2 (Thinking) or GPT-OSS 120B?

DeepSeek V3.2 (Thinking) leads in coding with an average score of 79 vs 43.

Which is better for math, DeepSeek V3.2 (Thinking) or GPT-OSS 120B?

DeepSeek V3.2 (Thinking) leads in math with an average score of 86 vs 50.

Which is better for reasoning, DeepSeek V3.2 (Thinking) or GPT-OSS 120B?

DeepSeek V3.2 (Thinking) leads in reasoning with an average score of 82 vs 48.