Gemini 1.5 Pro vs LFM2.5-1.2B-Thinking

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

Gemini 1.5 Pro is clearly ahead on the aggregate, 52 to 33. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Gemini 1.5 Pro's sharpest advantage is in multimodal & grounded, where it averages 74.1 against 32.4. The single biggest benchmark swing on the page is MMMU-Pro, 75 to 27.

LFM2.5-1.2B-Thinking is the reasoning model in the pair, while Gemini 1.5 Pro 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. Gemini 1.5 Pro gives you the larger context window at 2M, compared with 32K for LFM2.5-1.2B-Thinking.

Quick Verdict

Pick Gemini 1.5 Pro 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

Gemini 1.5 Pro

Gemini 1.5 Pro

49.8

LFM2.5-1.2B-Thinking

34.1

45
Terminal-Bench 2.0
34
64
BrowseComp
37
45
OSWorld-Verified
32

Coding

Gemini 1.5 Pro

Gemini 1.5 Pro

18.5

LFM2.5-1.2B-Thinking

8.2

56
HumanEval
17
5
SWE-bench Verified
10
22
LiveCodeBench
9
18
SWE-bench Pro
7

Multimodal & Grounded

Gemini 1.5 Pro

Gemini 1.5 Pro

74.1

LFM2.5-1.2B-Thinking

32.4

75
MMMU-Pro
27
73
OfficeQA Pro
39

Reasoning

Gemini 1.5 Pro

Gemini 1.5 Pro

66.9

LFM2.5-1.2B-Thinking

38.4

62
SimpleQA
29
60
MuSR
31
74
BBH
67
70
LongBench v2
39
73
MRCRv2
42

Knowledge

Gemini 1.5 Pro

Gemini 1.5 Pro

44.2

LFM2.5-1.2B-Thinking

27

64
MMLU
27
64
GPQA
26
62
SuperGPQA
24
60
OpenBookQA
22
57
MMLU-Pro
51
1
HLE
2
54
FrontierScience
31

Instruction Following

Gemini 1.5 Pro

Gemini 1.5 Pro

77

LFM2.5-1.2B-Thinking

72

77
IFEval
72

Multilingual

Gemini 1.5 Pro

Gemini 1.5 Pro

69.5

LFM2.5-1.2B-Thinking

60.7

76
MGSM
62
66
MMLU-ProX
60

Mathematics

Gemini 1.5 Pro

Gemini 1.5 Pro

67.5

LFM2.5-1.2B-Thinking

42.3

64
AIME 2023
28
66
AIME 2024
30
65
AIME 2025
29
60
HMMT Feb 2023
24
62
HMMT Feb 2024
26
61
HMMT Feb 2025
25
63
BRUMO 2025
27
73
MATH-500
61

Frequently Asked Questions

Which is better, Gemini 1.5 Pro or LFM2.5-1.2B-Thinking?

Gemini 1.5 Pro is ahead overall, 52 to 33. The biggest single separator in this matchup is MMMU-Pro, where the scores are 75 and 27.

Which is better for knowledge tasks, Gemini 1.5 Pro or LFM2.5-1.2B-Thinking?

Gemini 1.5 Pro has the edge for knowledge tasks in this comparison, averaging 44.2 versus 27. Inside this category, GPQA is the benchmark that creates the most daylight between them.

Which is better for coding, Gemini 1.5 Pro or LFM2.5-1.2B-Thinking?

Gemini 1.5 Pro has the edge for coding in this comparison, averaging 18.5 versus 8.2. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for math, Gemini 1.5 Pro or LFM2.5-1.2B-Thinking?

Gemini 1.5 Pro has the edge for math in this comparison, averaging 67.5 versus 42.3. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, Gemini 1.5 Pro or LFM2.5-1.2B-Thinking?

Gemini 1.5 Pro has the edge for reasoning in this comparison, averaging 66.9 versus 38.4. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Gemini 1.5 Pro or LFM2.5-1.2B-Thinking?

Gemini 1.5 Pro has the edge for agentic tasks in this comparison, averaging 49.8 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, Gemini 1.5 Pro or LFM2.5-1.2B-Thinking?

Gemini 1.5 Pro has the edge for multimodal and grounded tasks in this comparison, averaging 74.1 versus 32.4. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, Gemini 1.5 Pro or LFM2.5-1.2B-Thinking?

Gemini 1.5 Pro has the edge for instruction following in this comparison, averaging 77 versus 72. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, Gemini 1.5 Pro or LFM2.5-1.2B-Thinking?

Gemini 1.5 Pro has the edge for multilingual tasks in this comparison, averaging 69.5 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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