Gemini 3.1 Pro vs Ministral 3 8B

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

Gemini 3.1 Pro is clearly ahead on the aggregate, 84 to 32. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Gemini 3.1 Pro's sharpest advantage is in multimodal & grounded, where it averages 95 against 32.4. The single biggest benchmark swing on the page is MMLU, 99 to 28.

Gemini 3.1 Pro is also the more expensive model on tokens at $1.25 input / $5.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Ministral 3 8B. That is roughly Infinityx on output cost alone. Gemini 3.1 Pro gives you the larger context window at 1M, compared with 128K for Ministral 3 8B.

Quick Verdict

Pick Gemini 3.1 Pro if you want the stronger benchmark profile. Ministral 3 8B only becomes the better choice if you want the cheaper token bill.

Agentic

Gemini 3.1 Pro

Gemini 3.1 Pro

76.1

Ministral 3 8B

28.9

77
Terminal-Bench 2.0
26
86
BrowseComp
36
68
OSWorld-Verified
27

Coding

Gemini 3.1 Pro

Gemini 3.1 Pro

71.9

Ministral 3 8B

14.2

91
HumanEval
23
75
SWE-bench Verified
16
71
LiveCodeBench
15
72
SWE-bench Pro
13

Multimodal & Grounded

Gemini 3.1 Pro

Gemini 3.1 Pro

95

Ministral 3 8B

32.4

95
MMMU-Pro
27
95
OfficeQA Pro
39

Reasoning

Gemini 3.1 Pro

Gemini 3.1 Pro

92.7

Ministral 3 8B

36.1

95
SimpleQA
28
93
MuSR
26
92
BBH
63
93
LongBench v2
38
90
MRCRv2
41

Knowledge

Gemini 3.1 Pro

Gemini 3.1 Pro

79.4

Ministral 3 8B

28

99
MMLU
28
97
GPQA
27
95
SuperGPQA
25
93
OpenBookQA
23
92
MMLU-Pro
52
40
HLE
3
88
FrontierScience
32

Instruction Following

Gemini 3.1 Pro

Gemini 3.1 Pro

95

Ministral 3 8B

69

95
IFEval
69

Multilingual

Gemini 3.1 Pro

Gemini 3.1 Pro

94.1

Ministral 3 8B

61.7

96
MGSM
63
93
MMLU-ProX
61

Mathematics

Gemini 3.1 Pro

Gemini 3.1 Pro

96.8

Ministral 3 8B

43.3

99
AIME 2023
30
99
AIME 2024
32
98
AIME 2025
33
95
HMMT Feb 2023
26
97
HMMT Feb 2024
28
96
HMMT Feb 2025
27
96
BRUMO 2025
29
97
MATH-500
60

Frequently Asked Questions

Which is better, Gemini 3.1 Pro or Ministral 3 8B?

Gemini 3.1 Pro is ahead overall, 84 to 32. The biggest single separator in this matchup is MMLU, where the scores are 99 and 28.

Which is better for knowledge tasks, Gemini 3.1 Pro or Ministral 3 8B?

Gemini 3.1 Pro has the edge for knowledge tasks in this comparison, averaging 79.4 versus 28. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, Gemini 3.1 Pro or Ministral 3 8B?

Gemini 3.1 Pro has the edge for coding in this comparison, averaging 71.9 versus 14.2. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for math, Gemini 3.1 Pro or Ministral 3 8B?

Gemini 3.1 Pro has the edge for math in this comparison, averaging 96.8 versus 43.3. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, Gemini 3.1 Pro or Ministral 3 8B?

Gemini 3.1 Pro has the edge for reasoning in this comparison, averaging 92.7 versus 36.1. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Gemini 3.1 Pro or Ministral 3 8B?

Gemini 3.1 Pro has the edge for agentic tasks in this comparison, averaging 76.1 versus 28.9. 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, Gemini 3.1 Pro or Ministral 3 8B?

Gemini 3.1 Pro has the edge for multimodal and grounded tasks in this comparison, averaging 95 versus 32.4. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, Gemini 3.1 Pro or Ministral 3 8B?

Gemini 3.1 Pro has the edge for instruction following in this comparison, averaging 95 versus 69. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, Gemini 3.1 Pro or Ministral 3 8B?

Gemini 3.1 Pro has the edge for multilingual tasks in this comparison, averaging 94.1 versus 61.7. Inside this category, MGSM is the benchmark that creates the most daylight between them.

Last updated: March 12, 2026

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