Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
Claude Opus 4.6 is clearly ahead on the aggregate, 85 to 30. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude Opus 4.6's sharpest advantage is in coding, where it averages 75.1 against 7.2. The single biggest benchmark swing on the page is HumanEval, 91 to 14.
Claude Opus 4.6 is also the more expensive model on tokens at $15.00 input / $75.00 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. Claude Opus 4.6 gives you the larger context window at 1M, compared with 32K for LFM2.5-1.2B-Instruct.
Pick Claude Opus 4.6 if you want the stronger benchmark profile. LFM2.5-1.2B-Instruct only becomes the better choice if you want the cheaper token bill.
Claude Opus 4.6
79.2
LFM2.5-1.2B-Instruct
25.7
Claude Opus 4.6
75.1
LFM2.5-1.2B-Instruct
7.2
Claude Opus 4.6
94.6
LFM2.5-1.2B-Instruct
32.4
Claude Opus 4.6
93.1
LFM2.5-1.2B-Instruct
32.1
Claude Opus 4.6
78.9
LFM2.5-1.2B-Instruct
26
Claude Opus 4.6
95
LFM2.5-1.2B-Instruct
80
Claude Opus 4.6
94.7
LFM2.5-1.2B-Instruct
60.7
Claude Opus 4.6
97.2
LFM2.5-1.2B-Instruct
37
Claude Opus 4.6 is ahead overall, 85 to 30. The biggest single separator in this matchup is HumanEval, where the scores are 91 and 14.
Claude Opus 4.6 has the edge for knowledge tasks in this comparison, averaging 78.9 versus 26. Inside this category, MMLU is the benchmark that creates the most daylight between them.
Claude Opus 4.6 has the edge for coding in this comparison, averaging 75.1 versus 7.2. Inside this category, HumanEval is the benchmark that creates the most daylight between them.
Claude Opus 4.6 has the edge for math in this comparison, averaging 97.2 versus 37. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.
Claude Opus 4.6 has the edge for reasoning in this comparison, averaging 93.1 versus 32.1. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.
Claude Opus 4.6 has the edge for agentic tasks in this comparison, averaging 79.2 versus 25.7. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Claude Opus 4.6 has the edge for multimodal and grounded tasks in this comparison, averaging 94.6 versus 32.4. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
Claude Opus 4.6 has the edge for instruction following in this comparison, averaging 95 versus 80. Inside this category, IFEval is the benchmark that creates the most daylight between them.
Claude Opus 4.6 has the edge for multilingual tasks in this comparison, averaging 94.7 versus 60.7. Inside this category, MGSM is the benchmark that creates the most daylight between them.
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