Ministral 3 14B (Reasoning) vs GPT-OSS 20B

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

Ministral 3 14B (Reasoning) is clearly ahead on the aggregate, 60 to 35. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Ministral 3 14B (Reasoning)'s sharpest advantage is in multimodal & grounded, where it averages 71.5 against 36. The single biggest benchmark swing on the page is MuSR, 70 to 27.

Ministral 3 14B (Reasoning) is the reasoning model in the pair, while GPT-OSS 20B is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use.

Quick Verdict

Pick Ministral 3 14B (Reasoning) if you want the stronger benchmark profile. GPT-OSS 20B only becomes the better choice if you would rather avoid the extra latency and token burn of a reasoning model.

Agentic

Ministral 3 14B (Reasoning)

Ministral 3 14B (Reasoning)

58.5

GPT-OSS 20B

35.4

60
Terminal-Bench 2.0
35
61
BrowseComp
42
55
OSWorld-Verified
31

Coding

Ministral 3 14B (Reasoning)

Ministral 3 14B (Reasoning)

35

GPT-OSS 20B

14.5

62
HumanEval
23
39
SWE-bench Verified
14
33
LiveCodeBench
11
36
SWE-bench Pro
18

Multimodal & Grounded

Ministral 3 14B (Reasoning)

Ministral 3 14B (Reasoning)

71.5

GPT-OSS 20B

36

71
MMMU-Pro
31
72
OfficeQA Pro
42

Reasoning

Ministral 3 14B (Reasoning)

Ministral 3 14B (Reasoning)

69.2

GPT-OSS 20B

40.4

70
SimpleQA
29
70
MuSR
27
80
BBH
62
66
LongBench v2
48
66
MRCRv2
48

Knowledge

Ministral 3 14B (Reasoning)

Ministral 3 14B (Reasoning)

52.1

GPT-OSS 20B

29

71
MMLU
31
70
GPQA
30
68
SuperGPQA
28
66
OpenBookQA
26
69
MMLU-Pro
53
7
HLE
1
62
FrontierScience
34

Instruction Following

Ministral 3 14B (Reasoning)

Ministral 3 14B (Reasoning)

81

GPT-OSS 20B

67

81
IFEval
67

Multilingual

Ministral 3 14B (Reasoning)

Ministral 3 14B (Reasoning)

77.8

GPT-OSS 20B

59.7

81
MGSM
61
76
MMLU-ProX
59

Mathematics

Ministral 3 14B (Reasoning)

Ministral 3 14B (Reasoning)

75.2

GPT-OSS 20B

43.1

73
AIME 2023
31
75
AIME 2024
33
74
AIME 2025
32
69
HMMT Feb 2023
27
71
HMMT Feb 2024
29
70
HMMT Feb 2025
28
72
BRUMO 2025
30
79
MATH-500
59

Frequently Asked Questions

Which is better, Ministral 3 14B (Reasoning) or GPT-OSS 20B?

Ministral 3 14B (Reasoning) is ahead overall, 60 to 35. The biggest single separator in this matchup is MuSR, where the scores are 70 and 27.

Which is better for knowledge tasks, Ministral 3 14B (Reasoning) or GPT-OSS 20B?

Ministral 3 14B (Reasoning) has the edge for knowledge tasks in this comparison, averaging 52.1 versus 29. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, Ministral 3 14B (Reasoning) or GPT-OSS 20B?

Ministral 3 14B (Reasoning) has the edge for coding in this comparison, averaging 35 versus 14.5. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for math, Ministral 3 14B (Reasoning) or GPT-OSS 20B?

Ministral 3 14B (Reasoning) has the edge for math in this comparison, averaging 75.2 versus 43.1. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, Ministral 3 14B (Reasoning) or GPT-OSS 20B?

Ministral 3 14B (Reasoning) has the edge for reasoning in this comparison, averaging 69.2 versus 40.4. Inside this category, MuSR is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Ministral 3 14B (Reasoning) or GPT-OSS 20B?

Ministral 3 14B (Reasoning) has the edge for agentic tasks in this comparison, averaging 58.5 versus 35.4. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.

Which is better for multimodal and grounded tasks, Ministral 3 14B (Reasoning) or GPT-OSS 20B?

Ministral 3 14B (Reasoning) has the edge for multimodal and grounded tasks in this comparison, averaging 71.5 versus 36. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, Ministral 3 14B (Reasoning) or GPT-OSS 20B?

Ministral 3 14B (Reasoning) has the edge for instruction following in this comparison, averaging 81 versus 67. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, Ministral 3 14B (Reasoning) or GPT-OSS 20B?

Ministral 3 14B (Reasoning) has the edge for multilingual tasks in this comparison, averaging 77.8 versus 59.7. Inside this category, MGSM is the benchmark that creates the most daylight between them.

Last updated: March 12, 2026

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