DeepSeek-R1 vs GPT-OSS 20B

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

Quick Verdict

DeepSeek-R1 wins overall with a score of 35 vs 22 (13 point difference).DeepSeek-R1 wins 4 out of 4 categories.

Knowledge

DeepSeek-R1

DeepSeek-R1

41.8

GPT-OSS 20B

28.8

44
MMLU
31
43
GPQA
30
41
SuperGPQA
28
39
OpenBookQA
26

Coding

DeepSeek-R1

DeepSeek-R1

36

GPT-OSS 20B

23

36
HumanEval
23

Mathematics

DeepSeek-R1

DeepSeek-R1

43

GPT-OSS 20B

30

44
AIME 2023
31
46
AIME 2024
33
45
AIME 2025
32
40
HMMT Feb 2023
27
42
HMMT Feb 2024
29
41
HMMT Feb 2025
28
43
BRUMO 2025
30

Reasoning

DeepSeek-R1

DeepSeek-R1

41

GPT-OSS 20B

28

42
SimpleQA
29
40
MuSR
27

Frequently Asked Questions

Which is better, DeepSeek-R1 or GPT-OSS 20B?

DeepSeek-R1 scores higher overall with 35 vs 22, a difference of 13 points across all benchmarks.

Which is better for knowledge tasks, DeepSeek-R1 or GPT-OSS 20B?

DeepSeek-R1 leads in knowledge tasks with an average score of 41.8 vs 28.8.

Which is better for coding, DeepSeek-R1 or GPT-OSS 20B?

DeepSeek-R1 leads in coding with an average score of 36 vs 23.

Which is better for math, DeepSeek-R1 or GPT-OSS 20B?

DeepSeek-R1 leads in math with an average score of 43 vs 30.

Which is better for reasoning, DeepSeek-R1 or GPT-OSS 20B?

DeepSeek-R1 leads in reasoning with an average score of 41 vs 28.