Gemini 3 Pro vs LFM2.5-1.2B-Thinking

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

Gemini 3 Pro is clearly ahead on the aggregate, 77 to 33. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Gemini 3 Pro's sharpest advantage is in multimodal & grounded, where it averages 93.1 against 32.4. The single biggest benchmark swing on the page is HumanEval, 91 to 17.

LFM2.5-1.2B-Thinking is the reasoning model in the pair, while Gemini 3 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 3 Pro gives you the larger context window at 2M, compared with 32K for LFM2.5-1.2B-Thinking.

Quick Verdict

Pick Gemini 3 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 3 Pro

Gemini 3 Pro

71.1

LFM2.5-1.2B-Thinking

34.1

68
Terminal-Bench 2.0
34
83
BrowseComp
37
66
OSWorld-Verified
32

Coding

Gemini 3 Pro

Gemini 3 Pro

54.1

LFM2.5-1.2B-Thinking

8.2

91
HumanEval
17
59
SWE-bench Verified
10
49
LiveCodeBench
9
58
SWE-bench Pro
7

Multimodal & Grounded

Gemini 3 Pro

Gemini 3 Pro

93.1

LFM2.5-1.2B-Thinking

32.4

94
MMMU-Pro
27
92
OfficeQA Pro
39

Reasoning

Gemini 3 Pro

Gemini 3 Pro

91.2

LFM2.5-1.2B-Thinking

38.4

95
SimpleQA
29
93
MuSR
31
90
BBH
67
90
LongBench v2
39
87
MRCRv2
42

Knowledge

Gemini 3 Pro

Gemini 3 Pro

71.8

LFM2.5-1.2B-Thinking

27

99
MMLU
27
97
GPQA
26
95
SuperGPQA
24
93
OpenBookQA
22
83
MMLU-Pro
51
20
HLE
2
86
FrontierScience
31

Instruction Following

Gemini 3 Pro

Gemini 3 Pro

88

LFM2.5-1.2B-Thinking

72

88
IFEval
72

Multilingual

Gemini 3 Pro

Gemini 3 Pro

86.4

LFM2.5-1.2B-Thinking

60.7

89
MGSM
62
85
MMLU-ProX
60

Mathematics

Gemini 3 Pro

Gemini 3 Pro

94.1

LFM2.5-1.2B-Thinking

42.3

99
AIME 2023
28
99
AIME 2024
30
98
AIME 2025
29
95
HMMT Feb 2023
24
97
HMMT Feb 2024
26
96
HMMT Feb 2025
25
96
BRUMO 2025
27
91
MATH-500
61

Frequently Asked Questions

Which is better, Gemini 3 Pro or LFM2.5-1.2B-Thinking?

Gemini 3 Pro is ahead overall, 77 to 33. The biggest single separator in this matchup is HumanEval, where the scores are 91 and 17.

Which is better for knowledge tasks, Gemini 3 Pro or LFM2.5-1.2B-Thinking?

Gemini 3 Pro has the edge for knowledge tasks in this comparison, averaging 71.8 versus 27. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, Gemini 3 Pro or LFM2.5-1.2B-Thinking?

Gemini 3 Pro has the edge for coding in this comparison, averaging 54.1 versus 8.2. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for math, Gemini 3 Pro or LFM2.5-1.2B-Thinking?

Gemini 3 Pro has the edge for math in this comparison, averaging 94.1 versus 42.3. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, Gemini 3 Pro or LFM2.5-1.2B-Thinking?

Gemini 3 Pro has the edge for reasoning in this comparison, averaging 91.2 versus 38.4. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Gemini 3 Pro or LFM2.5-1.2B-Thinking?

Gemini 3 Pro has the edge for agentic tasks in this comparison, averaging 71.1 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 3 Pro or LFM2.5-1.2B-Thinking?

Gemini 3 Pro has the edge for multimodal and grounded tasks in this comparison, averaging 93.1 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 3 Pro or LFM2.5-1.2B-Thinking?

Gemini 3 Pro has the edge for instruction following in this comparison, averaging 88 versus 72. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, Gemini 3 Pro or LFM2.5-1.2B-Thinking?

Gemini 3 Pro has the edge for multilingual tasks in this comparison, averaging 86.4 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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