Claude 3 Haiku vs Ministral 3 3B (Reasoning)

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

Claude 3 Haiku is clearly ahead on the aggregate, 49 to 31. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Claude 3 Haiku's sharpest advantage is in multimodal & grounded, where it averages 68.7 against 30.4. The single biggest benchmark swing on the page is MMMU-Pro, 70 to 25.

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

Quick Verdict

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

Agentic

Claude 3 Haiku

Claude 3 Haiku

44

Ministral 3 3B (Reasoning)

34

40
Terminal-Bench 2.0
33
53
BrowseComp
37
42
OSWorld-Verified
33

Coding

Claude 3 Haiku

Claude 3 Haiku

19.3

Ministral 3 3B (Reasoning)

7.2

48
HumanEval
16
17
SWE-bench Verified
9
20
LiveCodeBench
8
19
SWE-bench Pro
6

Multimodal & Grounded

Claude 3 Haiku

Claude 3 Haiku

68.7

Ministral 3 3B (Reasoning)

30.4

70
MMMU-Pro
25
67
OfficeQA Pro
37

Reasoning

Claude 3 Haiku

Claude 3 Haiku

59.6

Ministral 3 3B (Reasoning)

35.3

54
SimpleQA
26
52
MuSR
26
74
BBH
63
63
LongBench v2
37
63
MRCRv2
40

Knowledge

Claude 3 Haiku

Claude 3 Haiku

42.8

Ministral 3 3B (Reasoning)

25.2

56
MMLU
25
56
GPQA
24
54
SuperGPQA
22
52
OpenBookQA
20
63
MMLU-Pro
49
2
HLE
1
50
FrontierScience
29

Instruction Following

Claude 3 Haiku

Claude 3 Haiku

76

Ministral 3 3B (Reasoning)

68

76
IFEval
68

Multilingual

Claude 3 Haiku

Claude 3 Haiku

71.1

Ministral 3 3B (Reasoning)

59.7

73
MGSM
61
70
MMLU-ProX
59

Mathematics

Claude 3 Haiku

Claude 3 Haiku

62.2

Ministral 3 3B (Reasoning)

40.9

56
AIME 2023
27
58
AIME 2024
29
57
AIME 2025
28
52
HMMT Feb 2023
23
54
HMMT Feb 2024
25
53
HMMT Feb 2025
24
55
BRUMO 2025
26
71
MATH-500
59

Frequently Asked Questions

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

Claude 3 Haiku is ahead overall, 49 to 31. The biggest single separator in this matchup is MMMU-Pro, where the scores are 70 and 25.

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

Claude 3 Haiku has the edge for knowledge tasks in this comparison, averaging 42.8 versus 25.2. Inside this category, GPQA is the benchmark that creates the most daylight between them.

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

Claude 3 Haiku has the edge for coding in this comparison, averaging 19.3 versus 7.2. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

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

Claude 3 Haiku has the edge for math in this comparison, averaging 62.2 versus 40.9. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

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

Claude 3 Haiku has the edge for reasoning in this comparison, averaging 59.6 versus 35.3. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.

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

Claude 3 Haiku has the edge for agentic tasks in this comparison, averaging 44 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 3 Haiku or Ministral 3 3B (Reasoning)?

Claude 3 Haiku has the edge for multimodal and grounded tasks in this comparison, averaging 68.7 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 3 Haiku or Ministral 3 3B (Reasoning)?

Claude 3 Haiku has the edge for instruction following in this comparison, averaging 76 versus 68. Inside this category, IFEval is the benchmark that creates the most daylight between them.

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

Claude 3 Haiku has the edge for multilingual tasks in this comparison, averaging 71.1 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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