GPT-OSS 20B vs Llama 4 Maverick

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

Quick Verdict

Llama 4 Maverick wins overall with a score of 37 vs 22 (15 point difference).Llama 4 Maverick wins 4 out of 4 categories.

Knowledge

Llama 4 Maverick

GPT-OSS 20B

28.8

Llama 4 Maverick

43.8

31
MMLU
46
30
GPQA
45
28
SuperGPQA
43
26
OpenBookQA
41

Coding

Llama 4 Maverick

GPT-OSS 20B

23

Llama 4 Maverick

38

23
HumanEval
38

Mathematics

Llama 4 Maverick

GPT-OSS 20B

30

Llama 4 Maverick

45

31
AIME 2023
46
33
AIME 2024
48
32
AIME 2025
47
27
HMMT Feb 2023
42
29
HMMT Feb 2024
44
28
HMMT Feb 2025
43
30
BRUMO 2025
45

Reasoning

Llama 4 Maverick

GPT-OSS 20B

28

Llama 4 Maverick

43

29
SimpleQA
44
27
MuSR
42

Frequently Asked Questions

Which is better, GPT-OSS 20B or Llama 4 Maverick?

Llama 4 Maverick scores higher overall with 37 vs 22, a difference of 15 points across all benchmarks.

Which is better for knowledge tasks, GPT-OSS 20B or Llama 4 Maverick?

Llama 4 Maverick leads in knowledge tasks with an average score of 43.8 vs 28.8.

Which is better for coding, GPT-OSS 20B or Llama 4 Maverick?

Llama 4 Maverick leads in coding with an average score of 38 vs 23.

Which is better for math, GPT-OSS 20B or Llama 4 Maverick?

Llama 4 Maverick leads in math with an average score of 45 vs 30.

Which is better for reasoning, GPT-OSS 20B or Llama 4 Maverick?

Llama 4 Maverick leads in reasoning with an average score of 43 vs 28.