Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
o3-pro is clearly ahead on the aggregate, 71 to 30. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
o3-pro's sharpest advantage is in mathematics, where it averages 89 against 37. The single biggest benchmark swing on the page is HumanEval, 80 to 14.
o3-pro is the reasoning model in the pair, while LFM2.5-1.2B-Instruct 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. o3-pro gives you the larger context window at 200K, compared with 32K for LFM2.5-1.2B-Instruct.
Pick o3-pro if you want the stronger benchmark profile. LFM2.5-1.2B-Instruct only becomes the better choice if you would rather avoid the extra latency and token burn of a reasoning model.
o3-pro
70.4
LFM2.5-1.2B-Instruct
25.7
o3-pro
49.2
LFM2.5-1.2B-Instruct
7.2
o3-pro
74.1
LFM2.5-1.2B-Instruct
32.4
o3-pro
83.6
LFM2.5-1.2B-Instruct
32.1
o3-pro
67.1
LFM2.5-1.2B-Instruct
26
o3-pro
82
LFM2.5-1.2B-Instruct
80
o3-pro
81.1
LFM2.5-1.2B-Instruct
60.7
o3-pro
89
LFM2.5-1.2B-Instruct
37
o3-pro is ahead overall, 71 to 30. The biggest single separator in this matchup is HumanEval, where the scores are 80 and 14.
o3-pro has the edge for knowledge tasks in this comparison, averaging 67.1 versus 26. Inside this category, GPQA is the benchmark that creates the most daylight between them.
o3-pro has the edge for coding in this comparison, averaging 49.2 versus 7.2. Inside this category, HumanEval is the benchmark that creates the most daylight between them.
o3-pro has the edge for math in this comparison, averaging 89 versus 37. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.
o3-pro has the edge for reasoning in this comparison, averaging 83.6 versus 32.1. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.
o3-pro has the edge for agentic tasks in this comparison, averaging 70.4 versus 25.7. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
o3-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.
o3-pro has the edge for instruction following in this comparison, averaging 82 versus 80. Inside this category, IFEval is the benchmark that creates the most daylight between them.
o3-pro has the edge for multilingual tasks in this comparison, averaging 81.1 versus 60.7. Inside this category, MGSM is the benchmark that creates the most daylight between them.
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