Nemotron-4 15B vs LFM2.5-1.2B-Thinking

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

Nemotron-4 15B is clearly ahead on the aggregate, 47 to 33. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Nemotron-4 15B's sharpest advantage is in mathematics, where it averages 61.1 against 42.3. The single biggest benchmark swing on the page is HumanEval, 46 to 17.

LFM2.5-1.2B-Thinking is the reasoning model in the pair, while Nemotron-4 15B 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.

Quick Verdict

Pick Nemotron-4 15B if you want the stronger benchmark profile. LFM2.5-1.2B-Thinking only becomes the better choice if you want the stronger reasoning-first profile.

Agentic

Nemotron-4 15B

Nemotron-4 15B

41.3

LFM2.5-1.2B-Thinking

34.1

37
Terminal-Bench 2.0
34
47
BrowseComp
37
42
OSWorld-Verified
32

Coding

Nemotron-4 15B

Nemotron-4 15B

26.5

LFM2.5-1.2B-Thinking

8.2

46
HumanEval
17
31
SWE-bench Verified
10
22
LiveCodeBench
9
30
SWE-bench Pro
7

Multimodal & Grounded

Nemotron-4 15B

Nemotron-4 15B

49.6

LFM2.5-1.2B-Thinking

32.4

46
MMMU-Pro
27
54
OfficeQA Pro
39

Reasoning

Nemotron-4 15B

Nemotron-4 15B

53.4

LFM2.5-1.2B-Thinking

38.4

52
SimpleQA
29
50
MuSR
31
73
BBH
67
52
LongBench v2
39
51
MRCRv2
42

Knowledge

Nemotron-4 15B

Nemotron-4 15B

42.6

LFM2.5-1.2B-Thinking

27

54
MMLU
27
53
GPQA
26
51
SuperGPQA
24
49
OpenBookQA
22
63
MMLU-Pro
51
5
HLE
2
50
FrontierScience
31

Instruction Following

Nemotron-4 15B

Nemotron-4 15B

79

LFM2.5-1.2B-Thinking

72

79
IFEval
72

Multilingual

Nemotron-4 15B

Nemotron-4 15B

72.4

LFM2.5-1.2B-Thinking

60.7

75
MGSM
62
71
MMLU-ProX
60

Mathematics

Nemotron-4 15B

Nemotron-4 15B

61.1

LFM2.5-1.2B-Thinking

42.3

54
AIME 2023
28
56
AIME 2024
30
55
AIME 2025
29
50
HMMT Feb 2023
24
52
HMMT Feb 2024
26
51
HMMT Feb 2025
25
53
BRUMO 2025
27
71
MATH-500
61

Frequently Asked Questions

Which is better, Nemotron-4 15B or LFM2.5-1.2B-Thinking?

Nemotron-4 15B is ahead overall, 47 to 33. The biggest single separator in this matchup is HumanEval, where the scores are 46 and 17.

Which is better for knowledge tasks, Nemotron-4 15B or LFM2.5-1.2B-Thinking?

Nemotron-4 15B has the edge for knowledge tasks in this comparison, averaging 42.6 versus 27. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, Nemotron-4 15B or LFM2.5-1.2B-Thinking?

Nemotron-4 15B has the edge for coding in this comparison, averaging 26.5 versus 8.2. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for math, Nemotron-4 15B or LFM2.5-1.2B-Thinking?

Nemotron-4 15B has the edge for math in this comparison, averaging 61.1 versus 42.3. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, Nemotron-4 15B or LFM2.5-1.2B-Thinking?

Nemotron-4 15B has the edge for reasoning in this comparison, averaging 53.4 versus 38.4. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Nemotron-4 15B or LFM2.5-1.2B-Thinking?

Nemotron-4 15B has the edge for agentic tasks in this comparison, averaging 41.3 versus 34.1. Inside this category, BrowseComp is the benchmark that creates the most daylight between them.

Which is better for multimodal and grounded tasks, Nemotron-4 15B or LFM2.5-1.2B-Thinking?

Nemotron-4 15B has the edge for multimodal and grounded tasks in this comparison, averaging 49.6 versus 32.4. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, Nemotron-4 15B or LFM2.5-1.2B-Thinking?

Nemotron-4 15B has the edge for instruction following in this comparison, averaging 79 versus 72. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, Nemotron-4 15B or LFM2.5-1.2B-Thinking?

Nemotron-4 15B has the edge for multilingual tasks in this comparison, averaging 72.4 versus 60.7. Inside this category, MGSM is the benchmark that creates the most daylight between them.

Last updated: March 12, 2026

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