GLM-4.5 vs LFM2.5-1.2B-Thinking

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

GLM-4.5 has the cleaner overall profile here, landing at 36 versus 33. It is a real lead, but still close enough that category-level strengths matter more than the headline number.

GLM-4.5's sharpest advantage is in multimodal & grounded, where it averages 41 against 32.4. The single biggest benchmark swing on the page is HumanEval, 29 to 17. LFM2.5-1.2B-Thinking does hit back in instruction following, so the answer changes if that is the part of the workload you care about most.

LFM2.5-1.2B-Thinking is the reasoning model in the pair, while GLM-4.5 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. GLM-4.5 gives you the larger context window at 128K, compared with 32K for LFM2.5-1.2B-Thinking.

Quick Verdict

Pick GLM-4.5 if you want the stronger benchmark profile. LFM2.5-1.2B-Thinking only becomes the better choice if instruction following is the priority or you want the stronger reasoning-first profile.

Agentic

LFM2.5-1.2B-Thinking

GLM-4.5

31.3

LFM2.5-1.2B-Thinking

34.1

28
Terminal-Bench 2.0
34
37
BrowseComp
37
31
OSWorld-Verified
32

Coding

GLM-4.5

GLM-4.5

14.4

LFM2.5-1.2B-Thinking

8.2

29
HumanEval
17
18
SWE-bench Verified
10
13
LiveCodeBench
9
15
SWE-bench Pro
7

Multimodal & Grounded

GLM-4.5

GLM-4.5

41

LFM2.5-1.2B-Thinking

32.4

36
MMMU-Pro
27
47
OfficeQA Pro
39

Reasoning

GLM-4.5

GLM-4.5

43.8

LFM2.5-1.2B-Thinking

38.4

35
SimpleQA
29
33
MuSR
31
61
BBH
67
48
LongBench v2
39
52
MRCRv2
42

Knowledge

GLM-4.5

GLM-4.5

32

LFM2.5-1.2B-Thinking

27

37
MMLU
27
36
GPQA
26
34
SuperGPQA
24
32
OpenBookQA
22
51
MMLU-Pro
51
3
HLE
2
40
FrontierScience
31

Instruction Following

LFM2.5-1.2B-Thinking

GLM-4.5

68

LFM2.5-1.2B-Thinking

72

68
IFEval
72

Multilingual

LFM2.5-1.2B-Thinking

GLM-4.5

58.1

LFM2.5-1.2B-Thinking

60.7

60
MGSM
62
57
MMLU-ProX
60

Mathematics

GLM-4.5

GLM-4.5

45.5

LFM2.5-1.2B-Thinking

42.3

37
AIME 2023
28
39
AIME 2024
30
38
AIME 2025
29
33
HMMT Feb 2023
24
35
HMMT Feb 2024
26
34
HMMT Feb 2025
25
36
BRUMO 2025
27
57
MATH-500
61

Frequently Asked Questions

Which is better, GLM-4.5 or LFM2.5-1.2B-Thinking?

GLM-4.5 is ahead overall, 36 to 33. The biggest single separator in this matchup is HumanEval, where the scores are 29 and 17.

Which is better for knowledge tasks, GLM-4.5 or LFM2.5-1.2B-Thinking?

GLM-4.5 has the edge for knowledge tasks in this comparison, averaging 32 versus 27. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, GLM-4.5 or LFM2.5-1.2B-Thinking?

GLM-4.5 has the edge for coding in this comparison, averaging 14.4 versus 8.2. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for math, GLM-4.5 or LFM2.5-1.2B-Thinking?

GLM-4.5 has the edge for math in this comparison, averaging 45.5 versus 42.3. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, GLM-4.5 or LFM2.5-1.2B-Thinking?

GLM-4.5 has the edge for reasoning in this comparison, averaging 43.8 versus 38.4. Inside this category, MRCRv2 is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, GLM-4.5 or LFM2.5-1.2B-Thinking?

LFM2.5-1.2B-Thinking has the edge for agentic tasks in this comparison, averaging 34.1 versus 31.3. 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, GLM-4.5 or LFM2.5-1.2B-Thinking?

GLM-4.5 has the edge for multimodal and grounded tasks in this comparison, averaging 41 versus 32.4. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, GLM-4.5 or LFM2.5-1.2B-Thinking?

LFM2.5-1.2B-Thinking has the edge for instruction following in this comparison, averaging 72 versus 68. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, GLM-4.5 or LFM2.5-1.2B-Thinking?

LFM2.5-1.2B-Thinking has the edge for multilingual tasks in this comparison, averaging 60.7 versus 58.1. Inside this category, MMLU-ProX is the benchmark that creates the most daylight between them.

Last updated: March 12, 2026

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