DeepSeek V3.2 vs GPT-OSS 20B

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

Quick Verdict

DeepSeek V3.2 wins overall with a score of 66 vs 22 (44 point difference).DeepSeek V3.2 wins 4 out of 4 categories.

Knowledge

DeepSeek V3.2

DeepSeek V3.2

81.8

GPT-OSS 20B

28.8

84
MMLU
31
83
GPQA
30
81
SuperGPQA
28
79
OpenBookQA
26

Coding

DeepSeek V3.2

DeepSeek V3.2

76

GPT-OSS 20B

23

76
HumanEval
23

Mathematics

DeepSeek V3.2

DeepSeek V3.2

83

GPT-OSS 20B

30

84
AIME 2023
31
86
AIME 2024
33
85
AIME 2025
32
80
HMMT Feb 2023
27
82
HMMT Feb 2024
29
81
HMMT Feb 2025
28
83
BRUMO 2025
30

Reasoning

DeepSeek V3.2

DeepSeek V3.2

80

GPT-OSS 20B

28

81
SimpleQA
29
79
MuSR
27

Frequently Asked Questions

Which is better, DeepSeek V3.2 or GPT-OSS 20B?

DeepSeek V3.2 scores higher overall with 66 vs 22, a difference of 44 points across all benchmarks.

Which is better for knowledge tasks, DeepSeek V3.2 or GPT-OSS 20B?

DeepSeek V3.2 leads in knowledge tasks with an average score of 81.8 vs 28.8.

Which is better for coding, DeepSeek V3.2 or GPT-OSS 20B?

DeepSeek V3.2 leads in coding with an average score of 76 vs 23.

Which is better for math, DeepSeek V3.2 or GPT-OSS 20B?

DeepSeek V3.2 leads in math with an average score of 83 vs 30.

Which is better for reasoning, DeepSeek V3.2 or GPT-OSS 20B?

DeepSeek V3.2 leads in reasoning with an average score of 80 vs 28.