benchlm.ai

GPT-OSS 20B vs Nemotron-4 15B

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

Quick Verdict

Nemotron-4 15B wins overall with a score of 45 vs 22 (23 point difference).Nemotron-4 15B wins 4 out of 4 categories.

GPT-OSS 20B

CreatorOpenAI
TypeOpen Weight
Context128K
Score22

Nemotron-4 15B

CreatorNVIDIA
TypeOpen Weight
Context32K
Score45

Knowledge

Nemotron-4 15B

GPT-OSS 20B

28.8

Nemotron-4 15B

51.8

31
MMLU
54
30
GPQA
53
28
SuperGPQA
51
26
OpenBookQA
49

Coding

Nemotron-4 15B

GPT-OSS 20B

23

Nemotron-4 15B

46

23
HumanEval
46

Mathematics

Nemotron-4 15B

GPT-OSS 20B

30

Nemotron-4 15B

53

31
AIME 2023
54
33
AIME 2024
56
32
AIME 2025
55
27
HMMT Feb 2023
50
29
HMMT Feb 2024
52
28
HMMT Feb 2025
51
30
BRUMO 2025
53

Reasoning

Nemotron-4 15B

GPT-OSS 20B

28

Nemotron-4 15B

51

29
SimpleQA
52
27
MuSR
50

Frequently Asked Questions

Which is better, GPT-OSS 20B or Nemotron-4 15B?

Nemotron-4 15B scores higher overall with 45 vs 22, a difference of 23 points across all benchmarks.

Which is better for knowledge tasks, GPT-OSS 20B or Nemotron-4 15B?

Nemotron-4 15B leads in knowledge tasks with an average score of 51.8 vs 28.8.

Which is better for coding, GPT-OSS 20B or Nemotron-4 15B?

Nemotron-4 15B leads in coding with an average score of 46 vs 23.

Which is better for math, GPT-OSS 20B or Nemotron-4 15B?

Nemotron-4 15B leads in math with an average score of 53 vs 30.

Which is better for reasoning, GPT-OSS 20B or Nemotron-4 15B?

Nemotron-4 15B leads in reasoning with an average score of 51 vs 28.

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