GPT-4 Turbo vs LFM2.5-1.2B-Thinking

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

GPT-4 Turbo 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.

GPT-4 Turbo's sharpest advantage is in multimodal & grounded, where it averages 55.3 against 32.4. The single biggest benchmark swing on the page is HumanEval, 52 to 17.

LFM2.5-1.2B-Thinking is the reasoning model in the pair, while GPT-4 Turbo 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. GPT-4 Turbo gives you the larger context window at 128K, compared with 32K for LFM2.5-1.2B-Thinking.

Quick Verdict

Pick GPT-4 Turbo 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

GPT-4 Turbo

GPT-4 Turbo

44.7

LFM2.5-1.2B-Thinking

34.1

42
Terminal-Bench 2.0
34
54
BrowseComp
37
41
OSWorld-Verified
32

Coding

GPT-4 Turbo

GPT-4 Turbo

17.2

LFM2.5-1.2B-Thinking

8.2

52
HumanEval
17
5
SWE-bench Verified
10
23
LiveCodeBench
9
14
SWE-bench Pro
7

Multimodal & Grounded

GPT-4 Turbo

GPT-4 Turbo

55.3

LFM2.5-1.2B-Thinking

32.4

53
MMMU-Pro
27
58
OfficeQA Pro
39

Reasoning

GPT-4 Turbo

GPT-4 Turbo

61

LFM2.5-1.2B-Thinking

38.4

58
SimpleQA
29
56
MuSR
31
75
BBH
67
62
LongBench v2
39
62
MRCRv2
42

Knowledge

GPT-4 Turbo

GPT-4 Turbo

41.1

LFM2.5-1.2B-Thinking

27

60
MMLU
27
60
GPQA
26
58
SuperGPQA
24
56
OpenBookQA
22
51
MMLU-Pro
51
1
HLE
2
52
FrontierScience
31

Instruction Following

GPT-4 Turbo

GPT-4 Turbo

80

LFM2.5-1.2B-Thinking

72

80
IFEval
72

Multilingual

GPT-4 Turbo

GPT-4 Turbo

68.5

LFM2.5-1.2B-Thinking

60.7

75
MGSM
62
65
MMLU-ProX
60

Mathematics

GPT-4 Turbo

GPT-4 Turbo

64.4

LFM2.5-1.2B-Thinking

42.3

60
AIME 2023
28
62
AIME 2024
30
61
AIME 2025
29
56
HMMT Feb 2023
24
58
HMMT Feb 2024
26
57
HMMT Feb 2025
25
59
BRUMO 2025
27
71
MATH-500
61

Frequently Asked Questions

Which is better, GPT-4 Turbo or LFM2.5-1.2B-Thinking?

GPT-4 Turbo is ahead overall, 47 to 33. The biggest single separator in this matchup is HumanEval, where the scores are 52 and 17.

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

GPT-4 Turbo has the edge for knowledge tasks in this comparison, averaging 41.1 versus 27. Inside this category, GPQA is the benchmark that creates the most daylight between them.

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

GPT-4 Turbo has the edge for coding in this comparison, averaging 17.2 versus 8.2. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

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

GPT-4 Turbo has the edge for math in this comparison, averaging 64.4 versus 42.3. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

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

GPT-4 Turbo has the edge for reasoning in this comparison, averaging 61 versus 38.4. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.

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

GPT-4 Turbo has the edge for agentic tasks in this comparison, averaging 44.7 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, GPT-4 Turbo or LFM2.5-1.2B-Thinking?

GPT-4 Turbo has the edge for multimodal and grounded tasks in this comparison, averaging 55.3 versus 32.4. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

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

GPT-4 Turbo has the edge for instruction following in this comparison, averaging 80 versus 72. Inside this category, IFEval is the benchmark that creates the most daylight between them.

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

GPT-4 Turbo has the edge for multilingual tasks in this comparison, averaging 68.5 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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