DeepSeek LLM 2.0 vs GPT-OSS 120B

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

Quick Verdict

DeepSeek LLM 2.0 wins overall with a score of 63 vs 42 (21 point difference).DeepSeek LLM 2.0 wins 4 out of 4 categories.

Knowledge

DeepSeek LLM 2.0

DeepSeek LLM 2.0

76.8

GPT-OSS 120B

48.8

79
MMLU
51
78
GPQA
50
76
SuperGPQA
48
74
OpenBookQA
46

Coding

DeepSeek LLM 2.0

DeepSeek LLM 2.0

73

GPT-OSS 120B

43

73
HumanEval
43

Mathematics

DeepSeek LLM 2.0

DeepSeek LLM 2.0

79

GPT-OSS 120B

50

80
AIME 2023
51
82
AIME 2024
53
81
AIME 2025
52
76
HMMT Feb 2023
47
78
HMMT Feb 2024
49
77
HMMT Feb 2025
48
79
BRUMO 2025
50

Reasoning

DeepSeek LLM 2.0

DeepSeek LLM 2.0

76

GPT-OSS 120B

48

77
SimpleQA
49
75
MuSR
47

Frequently Asked Questions

Which is better, DeepSeek LLM 2.0 or GPT-OSS 120B?

DeepSeek LLM 2.0 scores higher overall with 63 vs 42, a difference of 21 points across all benchmarks.

Which is better for knowledge tasks, DeepSeek LLM 2.0 or GPT-OSS 120B?

DeepSeek LLM 2.0 leads in knowledge tasks with an average score of 76.8 vs 48.8.

Which is better for coding, DeepSeek LLM 2.0 or GPT-OSS 120B?

DeepSeek LLM 2.0 leads in coding with an average score of 73 vs 43.

Which is better for math, DeepSeek LLM 2.0 or GPT-OSS 120B?

DeepSeek LLM 2.0 leads in math with an average score of 79 vs 50.

Which is better for reasoning, DeepSeek LLM 2.0 or GPT-OSS 120B?

DeepSeek LLM 2.0 leads in reasoning with an average score of 76 vs 48.