Claude Sonnet 4.6 vs Ministral 3 3B (Reasoning)

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

Claude Sonnet 4.6 is clearly ahead on the aggregate, 78 to 31. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Claude Sonnet 4.6's sharpest advantage is in multimodal & grounded, where it averages 91.9 against 30.4. The single biggest benchmark swing on the page is HumanEval, 93 to 16.

Claude Sonnet 4.6 is also the more expensive model on tokens at $3.00 input / $15.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Ministral 3 3B (Reasoning). That is roughly Infinityx on output cost alone. Ministral 3 3B (Reasoning) is the reasoning model in the pair, while Claude Sonnet 4.6 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 Sonnet 4.6 gives you the larger context window at 200K, compared with 128K for Ministral 3 3B (Reasoning).

Quick Verdict

Pick Claude Sonnet 4.6 if you want the stronger benchmark profile. Ministral 3 3B (Reasoning) only becomes the better choice if you want the cheaper token bill or you want the stronger reasoning-first profile.

Agentic

Claude Sonnet 4.6

Claude Sonnet 4.6

71.1

Ministral 3 3B (Reasoning)

34

70
Terminal-Bench 2.0
33
77
BrowseComp
37
68
OSWorld-Verified
33

Coding

Claude Sonnet 4.6

Claude Sonnet 4.6

60

Ministral 3 3B (Reasoning)

7.2

93
HumanEval
16
69
SWE-bench Verified
9
54
LiveCodeBench
8
64
SWE-bench Pro
6

Multimodal & Grounded

Claude Sonnet 4.6

Claude Sonnet 4.6

91.9

Ministral 3 3B (Reasoning)

30.4

95
MMMU-Pro
25
88
OfficeQA Pro
37

Reasoning

Claude Sonnet 4.6

Claude Sonnet 4.6

87.6

Ministral 3 3B (Reasoning)

35.3

95
SimpleQA
26
93
MuSR
26
88
BBH
63
83
LongBench v2
37
79
MRCRv2
40

Knowledge

Claude Sonnet 4.6

Claude Sonnet 4.6

71.8

Ministral 3 3B (Reasoning)

25.2

99
MMLU
25
97
GPQA
24
95
SuperGPQA
22
93
OpenBookQA
20
83
MMLU-Pro
49
21
HLE
1
85
FrontierScience
29

Instruction Following

Claude Sonnet 4.6

Claude Sonnet 4.6

91

Ministral 3 3B (Reasoning)

68

91
IFEval
68

Multilingual

Claude Sonnet 4.6

Claude Sonnet 4.6

89.7

Ministral 3 3B (Reasoning)

59.7

91
MGSM
61
89
MMLU-ProX
59

Mathematics

Claude Sonnet 4.6

Claude Sonnet 4.6

94.1

Ministral 3 3B (Reasoning)

40.9

99
AIME 2023
27
99
AIME 2024
29
98
AIME 2025
28
95
HMMT Feb 2023
23
97
HMMT Feb 2024
25
96
HMMT Feb 2025
24
96
BRUMO 2025
26
91
MATH-500
59

Frequently Asked Questions

Which is better, Claude Sonnet 4.6 or Ministral 3 3B (Reasoning)?

Claude Sonnet 4.6 is ahead overall, 78 to 31. The biggest single separator in this matchup is HumanEval, where the scores are 93 and 16.

Which is better for knowledge tasks, Claude Sonnet 4.6 or Ministral 3 3B (Reasoning)?

Claude Sonnet 4.6 has the edge for knowledge tasks in this comparison, averaging 71.8 versus 25.2. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, Claude Sonnet 4.6 or Ministral 3 3B (Reasoning)?

Claude Sonnet 4.6 has the edge for coding in this comparison, averaging 60 versus 7.2. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for math, Claude Sonnet 4.6 or Ministral 3 3B (Reasoning)?

Claude Sonnet 4.6 has the edge for math in this comparison, averaging 94.1 versus 40.9. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, Claude Sonnet 4.6 or Ministral 3 3B (Reasoning)?

Claude Sonnet 4.6 has the edge for reasoning in this comparison, averaging 87.6 versus 35.3. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Claude Sonnet 4.6 or Ministral 3 3B (Reasoning)?

Claude Sonnet 4.6 has the edge for agentic tasks in this comparison, averaging 71.1 versus 34. Inside this category, BrowseComp is the benchmark that creates the most daylight between them.

Which is better for multimodal and grounded tasks, Claude Sonnet 4.6 or Ministral 3 3B (Reasoning)?

Claude Sonnet 4.6 has the edge for multimodal and grounded tasks in this comparison, averaging 91.9 versus 30.4. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, Claude Sonnet 4.6 or Ministral 3 3B (Reasoning)?

Claude Sonnet 4.6 has the edge for instruction following in this comparison, averaging 91 versus 68. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, Claude Sonnet 4.6 or Ministral 3 3B (Reasoning)?

Claude Sonnet 4.6 has the edge for multilingual tasks in this comparison, averaging 89.7 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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