Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
Gemini 3.1 Flash-Lite is clearly ahead on the aggregate, 53 to 30. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Gemini 3.1 Flash-Lite's sharpest advantage is in multimodal & grounded, where it averages 73.1 against 32.4. The single biggest benchmark swing on the page is MMMU-Pro, 74 to 27. 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.
Gemini 3.1 Flash-Lite is also the more expensive model on tokens at $0.10 input / $0.40 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for LFM2.5-1.2B-Instruct. That is roughly Infinityx on output cost alone. Gemini 3.1 Flash-Lite gives you the larger context window at 1M, compared with 32K for LFM2.5-1.2B-Instruct.
Pick Gemini 3.1 Flash-Lite if you want the stronger benchmark profile. LFM2.5-1.2B-Instruct only becomes the better choice if instruction following is the priority or you want the cheaper token bill.
Gemini 3.1 Flash-Lite
49.2
LFM2.5-1.2B-Instruct
25.7
Gemini 3.1 Flash-Lite
24.7
LFM2.5-1.2B-Instruct
7.2
Gemini 3.1 Flash-Lite
73.1
LFM2.5-1.2B-Instruct
32.4
Gemini 3.1 Flash-Lite
65.8
LFM2.5-1.2B-Instruct
32.1
Gemini 3.1 Flash-Lite
45.3
LFM2.5-1.2B-Instruct
26
Gemini 3.1 Flash-Lite
79
LFM2.5-1.2B-Instruct
80
Gemini 3.1 Flash-Lite
69.8
LFM2.5-1.2B-Instruct
60.7
Gemini 3.1 Flash-Lite
66.1
LFM2.5-1.2B-Instruct
37
Gemini 3.1 Flash-Lite is ahead overall, 53 to 30. The biggest single separator in this matchup is MMMU-Pro, where the scores are 74 and 27.
Gemini 3.1 Flash-Lite has the edge for knowledge tasks in this comparison, averaging 45.3 versus 26. Inside this category, MMLU is the benchmark that creates the most daylight between them.
Gemini 3.1 Flash-Lite has the edge for coding in this comparison, averaging 24.7 versus 7.2. Inside this category, HumanEval is the benchmark that creates the most daylight between them.
Gemini 3.1 Flash-Lite has the edge for math in this comparison, averaging 66.1 versus 37. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.
Gemini 3.1 Flash-Lite has the edge for reasoning in this comparison, averaging 65.8 versus 32.1. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.
Gemini 3.1 Flash-Lite has the edge for agentic tasks in this comparison, averaging 49.2 versus 25.7. Inside this category, BrowseComp is the benchmark that creates the most daylight between them.
Gemini 3.1 Flash-Lite has the edge for multimodal and grounded tasks in this comparison, averaging 73.1 versus 32.4. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
LFM2.5-1.2B-Instruct has the edge for instruction following in this comparison, averaging 80 versus 79. Inside this category, IFEval is the benchmark that creates the most daylight between them.
Gemini 3.1 Flash-Lite has the edge for multilingual tasks in this comparison, averaging 69.8 versus 60.7. Inside this category, MGSM is the benchmark that creates the most daylight between them.
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