benchlm.ai

GPT-OSS 20B vs Grok 4.1

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

Quick Verdict

Grok 4.1 wins overall with a score of 84 vs 22 (62 point difference).Grok 4.1 wins 4 out of 4 categories.

GPT-OSS 20B

CreatorOpenAI
TypeOpen Weight
Context128K
Score22

Grok 4.1

CreatorxAI
TypeProprietary
Context128K
Score84

Knowledge

Grok 4.1

GPT-OSS 20B

28.8

Grok 4.1

96

31
MMLU
99
30
GPQA
97
28
SuperGPQA
95
26
OpenBookQA
93

Coding

Grok 4.1

GPT-OSS 20B

23

Grok 4.1

91

23
HumanEval
91

Mathematics

Grok 4.1

GPT-OSS 20B

30

Grok 4.1

97.1

31
AIME 2023
99
33
AIME 2024
99
32
AIME 2025
98
27
HMMT Feb 2023
95
29
HMMT Feb 2024
97
28
HMMT Feb 2025
96
30
BRUMO 2025
96

Reasoning

Grok 4.1

GPT-OSS 20B

28

Grok 4.1

94

29
SimpleQA
95
27
MuSR
93

Frequently Asked Questions

Which is better, GPT-OSS 20B or Grok 4.1?

Grok 4.1 scores higher overall with 84 vs 22, a difference of 62 points across all benchmarks.

Which is better for knowledge tasks, GPT-OSS 20B or Grok 4.1?

Grok 4.1 leads in knowledge tasks with an average score of 96 vs 28.8.

Which is better for coding, GPT-OSS 20B or Grok 4.1?

Grok 4.1 leads in coding with an average score of 91 vs 23.

Which is better for math, GPT-OSS 20B or Grok 4.1?

Grok 4.1 leads in math with an average score of 97.1 vs 30.

Which is better for reasoning, GPT-OSS 20B or Grok 4.1?

Grok 4.1 leads in reasoning with an average score of 94 vs 28.

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