Claude 3.5 Sonnet vs Ministral 3 8B (Reasoning)

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

Claude 3.5 Sonnet is clearly ahead on the aggregate, 60 to 36. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Claude 3.5 Sonnet's sharpest advantage is in multimodal & grounded, where it averages 74.8 against 33.4. The single biggest benchmark swing on the page is MMMU-Pro, 77 to 28.

Ministral 3 8B (Reasoning) is the reasoning model in the pair, while Claude 3.5 Sonnet 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. Claude 3.5 Sonnet gives you the larger context window at 200K, compared with 128K for Ministral 3 8B (Reasoning).

Quick Verdict

Pick Claude 3.5 Sonnet if you want the stronger benchmark profile. Ministral 3 8B (Reasoning) only becomes the better choice if you want the stronger reasoning-first profile.

Agentic

Claude 3.5 Sonnet

Claude 3.5 Sonnet

55

Ministral 3 8B (Reasoning)

38.5

54
Terminal-Bench 2.0
39
62
BrowseComp
41
51
OSWorld-Verified
36

Coding

Claude 3.5 Sonnet

Claude 3.5 Sonnet

37.8

Ministral 3 8B (Reasoning)

15.2

57
HumanEval
24
36
SWE-bench Verified
17
39
LiveCodeBench
16
37
SWE-bench Pro
14

Multimodal & Grounded

Claude 3.5 Sonnet

Claude 3.5 Sonnet

74.8

Ministral 3 8B (Reasoning)

33.4

77
MMMU-Pro
28
72
OfficeQA Pro
40

Reasoning

Claude 3.5 Sonnet

Claude 3.5 Sonnet

67.7

Ministral 3 8B (Reasoning)

42.1

63
SimpleQA
32
61
MuSR
33
83
BBH
70
70
LongBench v2
44
70
MRCRv2
47

Knowledge

Claude 3.5 Sonnet

Claude 3.5 Sonnet

50.8

Ministral 3 8B (Reasoning)

30

65
MMLU
30
65
GPQA
29
63
SuperGPQA
27
61
OpenBookQA
25
74
MMLU-Pro
54
5
HLE
5
59
FrontierScience
34

Instruction Following

Claude 3.5 Sonnet

Claude 3.5 Sonnet

83

Ministral 3 8B (Reasoning)

70

83
IFEval
70

Multilingual

Claude 3.5 Sonnet

Claude 3.5 Sonnet

80.5

Ministral 3 8B (Reasoning)

61.7

85
MGSM
63
78
MMLU-ProX
61

Mathematics

Claude 3.5 Sonnet

Claude 3.5 Sonnet

71.2

Ministral 3 8B (Reasoning)

47.8

65
AIME 2023
33
67
AIME 2024
35
66
AIME 2025
34
61
HMMT Feb 2023
29
63
HMMT Feb 2024
31
62
HMMT Feb 2025
30
64
BRUMO 2025
32
80
MATH-500
67

Frequently Asked Questions

Which is better, Claude 3.5 Sonnet or Ministral 3 8B (Reasoning)?

Claude 3.5 Sonnet is ahead overall, 60 to 36. The biggest single separator in this matchup is MMMU-Pro, where the scores are 77 and 28.

Which is better for knowledge tasks, Claude 3.5 Sonnet or Ministral 3 8B (Reasoning)?

Claude 3.5 Sonnet has the edge for knowledge tasks in this comparison, averaging 50.8 versus 30. Inside this category, GPQA is the benchmark that creates the most daylight between them.

Which is better for coding, Claude 3.5 Sonnet or Ministral 3 8B (Reasoning)?

Claude 3.5 Sonnet has the edge for coding in this comparison, averaging 37.8 versus 15.2. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for math, Claude 3.5 Sonnet or Ministral 3 8B (Reasoning)?

Claude 3.5 Sonnet has the edge for math in this comparison, averaging 71.2 versus 47.8. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, Claude 3.5 Sonnet or Ministral 3 8B (Reasoning)?

Claude 3.5 Sonnet has the edge for reasoning in this comparison, averaging 67.7 versus 42.1. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Claude 3.5 Sonnet or Ministral 3 8B (Reasoning)?

Claude 3.5 Sonnet has the edge for agentic tasks in this comparison, averaging 55 versus 38.5. Inside this category, BrowseComp is the benchmark that creates the most daylight between them.

Which is better for multimodal and grounded tasks, Claude 3.5 Sonnet or Ministral 3 8B (Reasoning)?

Claude 3.5 Sonnet has the edge for multimodal and grounded tasks in this comparison, averaging 74.8 versus 33.4. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, Claude 3.5 Sonnet or Ministral 3 8B (Reasoning)?

Claude 3.5 Sonnet has the edge for instruction following in this comparison, averaging 83 versus 70. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, Claude 3.5 Sonnet or Ministral 3 8B (Reasoning)?

Claude 3.5 Sonnet has the edge for multilingual tasks in this comparison, averaging 80.5 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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