Claude 4.1 Opus vs LFM2.5-1.2B-Instruct

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

Claude 4.1 Opus is clearly ahead on the aggregate, 64 to 30. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Claude 4.1 Opus's sharpest advantage is in multimodal & grounded, where it averages 80.7 against 32.4. The single biggest benchmark swing on the page is MMMU-Pro, 82 to 27.

Claude 4.1 Opus gives you the larger context window at 200K, compared with 32K for LFM2.5-1.2B-Instruct.

Quick Verdict

Pick Claude 4.1 Opus if you want the stronger benchmark profile. LFM2.5-1.2B-Instruct only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.

Agentic

Claude 4.1 Opus

Claude 4.1 Opus

58.7

LFM2.5-1.2B-Instruct

25.7

58
Terminal-Bench 2.0
22
62
BrowseComp
31
57
OSWorld-Verified
26

Coding

Claude 4.1 Opus

Claude 4.1 Opus

44

LFM2.5-1.2B-Instruct

7.2

68
HumanEval
14
48
SWE-bench Verified
9
40
LiveCodeBench
8
47
SWE-bench Pro
6

Multimodal & Grounded

Claude 4.1 Opus

Claude 4.1 Opus

80.7

LFM2.5-1.2B-Instruct

32.4

82
MMMU-Pro
27
79
OfficeQA Pro
39

Reasoning

Claude 4.1 Opus

Claude 4.1 Opus

72.9

LFM2.5-1.2B-Instruct

32.1

74
SimpleQA
24
72
MuSR
22
81
BBH
59
71
LongBench v2
34
71
MRCRv2
37

Knowledge

Claude 4.1 Opus

Claude 4.1 Opus

57.6

LFM2.5-1.2B-Instruct

26

76
MMLU
26
76
GPQA
25
74
SuperGPQA
23
72
OpenBookQA
21
75
MMLU-Pro
50
11
HLE
1
68
FrontierScience
30

Instruction Following

Claude 4.1 Opus

Claude 4.1 Opus

83

LFM2.5-1.2B-Instruct

80

83
IFEval
80

Multilingual

Claude 4.1 Opus

Claude 4.1 Opus

81.8

LFM2.5-1.2B-Instruct

60.7

85
MGSM
62
80
MMLU-ProX
60

Mathematics

Claude 4.1 Opus

Claude 4.1 Opus

77.7

LFM2.5-1.2B-Instruct

37

76
AIME 2023
24
78
AIME 2024
26
77
AIME 2025
25
72
HMMT Feb 2023
20
74
HMMT Feb 2024
22
73
HMMT Feb 2025
21
75
BRUMO 2025
23
81
MATH-500
54

Frequently Asked Questions

Which is better, Claude 4.1 Opus or LFM2.5-1.2B-Instruct?

Claude 4.1 Opus is ahead overall, 64 to 30. The biggest single separator in this matchup is MMMU-Pro, where the scores are 82 and 27.

Which is better for knowledge tasks, Claude 4.1 Opus or LFM2.5-1.2B-Instruct?

Claude 4.1 Opus has the edge for knowledge tasks in this comparison, averaging 57.6 versus 26. Inside this category, GPQA is the benchmark that creates the most daylight between them.

Which is better for coding, Claude 4.1 Opus or LFM2.5-1.2B-Instruct?

Claude 4.1 Opus has the edge for coding in this comparison, averaging 44 versus 7.2. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for math, Claude 4.1 Opus or LFM2.5-1.2B-Instruct?

Claude 4.1 Opus has the edge for math in this comparison, averaging 77.7 versus 37. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, Claude 4.1 Opus or LFM2.5-1.2B-Instruct?

Claude 4.1 Opus has the edge for reasoning in this comparison, averaging 72.9 versus 32.1. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Claude 4.1 Opus or LFM2.5-1.2B-Instruct?

Claude 4.1 Opus has the edge for agentic tasks in this comparison, averaging 58.7 versus 25.7. 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, Claude 4.1 Opus or LFM2.5-1.2B-Instruct?

Claude 4.1 Opus has the edge for multimodal and grounded tasks in this comparison, averaging 80.7 versus 32.4. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, Claude 4.1 Opus or LFM2.5-1.2B-Instruct?

Claude 4.1 Opus has the edge for instruction following in this comparison, averaging 83 versus 80. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, Claude 4.1 Opus or LFM2.5-1.2B-Instruct?

Claude 4.1 Opus has the edge for multilingual tasks in this comparison, averaging 81.8 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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