o3 vs Ministral 3 14B (Reasoning)

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

o3 is clearly ahead on the aggregate, 70 to 60. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

o3's sharpest advantage is in coding, where it averages 49.1 against 35. The single biggest benchmark swing on the page is SWE-bench Pro, 58 to 36.

o3 is also the more expensive model on tokens at $10.00 input / $40.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Ministral 3 14B (Reasoning). That is roughly Infinityx on output cost alone. o3 gives you the larger context window at 200K, compared with 128K for Ministral 3 14B (Reasoning).

Quick Verdict

Pick o3 if you want the stronger benchmark profile. Ministral 3 14B (Reasoning) only becomes the better choice if you want the cheaper token bill.

Agentic

o3

o3

69.9

Ministral 3 14B (Reasoning)

58.5

71
Terminal-Bench 2.0
60
75
BrowseComp
61
65
OSWorld-Verified
55

Coding

o3

o3

49.1

Ministral 3 14B (Reasoning)

35

78
HumanEval
62
50
SWE-bench Verified
39
40
LiveCodeBench
33
58
SWE-bench Pro
36

Multimodal & Grounded

o3

o3

72.3

Ministral 3 14B (Reasoning)

71.5

70
MMMU-Pro
71
75
OfficeQA Pro
72

Reasoning

o3

o3

82.6

Ministral 3 14B (Reasoning)

69.2

84
SimpleQA
70
82
MuSR
70
86
BBH
80
82
LongBench v2
66
81
MRCRv2
66

Knowledge

o3

o3

66

Ministral 3 14B (Reasoning)

52.1

86
MMLU
71
87
GPQA
70
85
SuperGPQA
68
83
OpenBookQA
66
75
MMLU-Pro
69
24
HLE
7
77
FrontierScience
62

Instruction Following

o3

o3

85

Ministral 3 14B (Reasoning)

81

85
IFEval
81

Multilingual

o3

o3

81.1

Ministral 3 14B (Reasoning)

77.8

83
MGSM
81
80
MMLU-ProX
76

Mathematics

o3

o3

87.5

Ministral 3 14B (Reasoning)

75.2

88
AIME 2023
73
90
AIME 2024
75
89
AIME 2025
74
84
HMMT Feb 2023
69
86
HMMT Feb 2024
71
85
HMMT Feb 2025
70
87
BRUMO 2025
72
88
MATH-500
79

Frequently Asked Questions

Which is better, o3 or Ministral 3 14B (Reasoning)?

o3 is ahead overall, 70 to 60. The biggest single separator in this matchup is SWE-bench Pro, where the scores are 58 and 36.

Which is better for knowledge tasks, o3 or Ministral 3 14B (Reasoning)?

o3 has the edge for knowledge tasks in this comparison, averaging 66 versus 52.1. Inside this category, GPQA is the benchmark that creates the most daylight between them.

Which is better for coding, o3 or Ministral 3 14B (Reasoning)?

o3 has the edge for coding in this comparison, averaging 49.1 versus 35. Inside this category, SWE-bench Pro is the benchmark that creates the most daylight between them.

Which is better for math, o3 or Ministral 3 14B (Reasoning)?

o3 has the edge for math in this comparison, averaging 87.5 versus 75.2. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, o3 or Ministral 3 14B (Reasoning)?

o3 has the edge for reasoning in this comparison, averaging 82.6 versus 69.2. Inside this category, LongBench v2 is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, o3 or Ministral 3 14B (Reasoning)?

o3 has the edge for agentic tasks in this comparison, averaging 69.9 versus 58.5. Inside this category, BrowseComp is the benchmark that creates the most daylight between them.

Which is better for multimodal and grounded tasks, o3 or Ministral 3 14B (Reasoning)?

o3 has the edge for multimodal and grounded tasks in this comparison, averaging 72.3 versus 71.5. Inside this category, OfficeQA Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, o3 or Ministral 3 14B (Reasoning)?

o3 has the edge for instruction following in this comparison, averaging 85 versus 81. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, o3 or Ministral 3 14B (Reasoning)?

o3 has the edge for multilingual tasks in this comparison, averaging 81.1 versus 77.8. Inside this category, MMLU-ProX is the benchmark that creates the most daylight between them.

Last updated: March 12, 2026

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