Grok 3 [Beta] vs LFM2.5-1.2B-Instruct

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

Grok 3 [Beta] is clearly ahead on the aggregate, 38 to 30. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Grok 3 [Beta]'s sharpest advantage is in reasoning, where it averages 47.4 against 32.1. The single biggest benchmark swing on the page is HumanEval, 34 to 14. LFM2.5-1.2B-Instruct does hit back in instruction following, so the answer changes if that is the part of the workload you care about most.

Grok 3 [Beta] gives you the larger context window at 128K, compared with 32K for LFM2.5-1.2B-Instruct.

Quick Verdict

Pick Grok 3 [Beta] if you want the stronger benchmark profile. LFM2.5-1.2B-Instruct only becomes the better choice if instruction following is the priority.

Agentic

Grok 3 [Beta]

Grok 3 [Beta]

35.7

LFM2.5-1.2B-Instruct

25.7

32
Terminal-Bench 2.0
22
41
BrowseComp
31
36
OSWorld-Verified
26

Coding

Grok 3 [Beta]

Grok 3 [Beta]

16.3

LFM2.5-1.2B-Instruct

7.2

34
HumanEval
14
19
SWE-bench Verified
9
11
LiveCodeBench
8
21
SWE-bench Pro
6

Multimodal & Grounded

Grok 3 [Beta]

Grok 3 [Beta]

43.2

LFM2.5-1.2B-Instruct

32.4

40
MMMU-Pro
27
47
OfficeQA Pro
39

Reasoning

Grok 3 [Beta]

Grok 3 [Beta]

47.4

LFM2.5-1.2B-Instruct

32.1

40
SimpleQA
24
38
MuSR
22
62
BBH
59
53
LongBench v2
34
52
MRCRv2
37

Knowledge

Grok 3 [Beta]

Grok 3 [Beta]

34

LFM2.5-1.2B-Instruct

26

42
MMLU
26
41
GPQA
25
39
SuperGPQA
23
37
OpenBookQA
21
53
MMLU-Pro
50
3
HLE
1
40
FrontierScience
30

Instruction Following

LFM2.5-1.2B-Instruct

Grok 3 [Beta]

67

LFM2.5-1.2B-Instruct

80

67
IFEval
80

Multilingual

LFM2.5-1.2B-Instruct

Grok 3 [Beta]

58.7

LFM2.5-1.2B-Instruct

60.7

60
MGSM
62
58
MMLU-ProX
60

Mathematics

Grok 3 [Beta]

Grok 3 [Beta]

49.1

LFM2.5-1.2B-Instruct

37

42
AIME 2023
24
44
AIME 2024
26
43
AIME 2025
25
38
HMMT Feb 2023
20
40
HMMT Feb 2024
22
39
HMMT Feb 2025
21
41
BRUMO 2025
23
59
MATH-500
54

Frequently Asked Questions

Which is better, Grok 3 [Beta] or LFM2.5-1.2B-Instruct?

Grok 3 [Beta] is ahead overall, 38 to 30. The biggest single separator in this matchup is HumanEval, where the scores are 34 and 14.

Which is better for knowledge tasks, Grok 3 [Beta] or LFM2.5-1.2B-Instruct?

Grok 3 [Beta] has the edge for knowledge tasks in this comparison, averaging 34 versus 26. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, Grok 3 [Beta] or LFM2.5-1.2B-Instruct?

Grok 3 [Beta] has the edge for coding in this comparison, averaging 16.3 versus 7.2. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for math, Grok 3 [Beta] or LFM2.5-1.2B-Instruct?

Grok 3 [Beta] has the edge for math in this comparison, averaging 49.1 versus 37. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, Grok 3 [Beta] or LFM2.5-1.2B-Instruct?

Grok 3 [Beta] has the edge for reasoning in this comparison, averaging 47.4 versus 32.1. Inside this category, LongBench v2 is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Grok 3 [Beta] or LFM2.5-1.2B-Instruct?

Grok 3 [Beta] has the edge for agentic tasks in this comparison, averaging 35.7 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, Grok 3 [Beta] or LFM2.5-1.2B-Instruct?

Grok 3 [Beta] has the edge for multimodal and grounded tasks in this comparison, averaging 43.2 versus 32.4. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, Grok 3 [Beta] or LFM2.5-1.2B-Instruct?

LFM2.5-1.2B-Instruct has the edge for instruction following in this comparison, averaging 80 versus 67. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, Grok 3 [Beta] or LFM2.5-1.2B-Instruct?

LFM2.5-1.2B-Instruct has the edge for multilingual tasks in this comparison, averaging 60.7 versus 58.7. Inside this category, MGSM is the benchmark that creates the most daylight between them.

Last updated: March 12, 2026

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