Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
Claude 4 Sonnet
62
Winner · 2/8 categoriesLFM2.5-350M
~39
0/8 categoriesClaude 4 Sonnet· LFM2.5-350M
Pick Claude 4 Sonnet if you want the stronger benchmark profile. LFM2.5-350M only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.
Claude 4 Sonnet is clearly ahead on the aggregate, 62 to 39. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude 4 Sonnet's sharpest advantage is in knowledge, where it averages 57.8 against 23.8. The single biggest benchmark swing on the page is MMLU-Pro, 75% to 20.0%.
Claude 4 Sonnet gives you the larger context window at 200K, compared with 32K for LFM2.5-350M.
BenchLM keeps the benchmark table and the operator tradeoffs on the same page so a better score does not hide a materially slower, pricier, or smaller-context model.
Runtime metrics show N/A when BenchLM does not have a sourced snapshot for that exact model. The scoring rules and freshness policy are documented on the methodology page.
| Benchmark | Claude 4 Sonnet | LFM2.5-350M |
|---|---|---|
| Agentic | ||
| Terminal-Bench 2.0 | 56% | — |
| BrowseComp | 62% | — |
| OSWorld-Verified | 57% | — |
| Coding | ||
| HumanEval | 65% | — |
| SWE-bench Verified | 72.7% | — |
| LiveCodeBench | 36% | — |
| SWE-bench Pro | 48% | — |
| Multimodal & Grounded | ||
| MMMU-Pro | 81% | — |
| OfficeQA Pro | 78% | — |
| Reasoning | ||
| MuSR | 69% | — |
| BBH | 82% | — |
| LongBench v2 | 71% | — |
| MRCRv2 | 72% | — |
| KnowledgeClaude 4 Sonnet wins | ||
| MMLU | 86.5% | — |
| GPQA | 73% | 30.6% |
| SuperGPQA | 71% | — |
| MMLU-Pro | 75% | 20.0% |
| HLE | 12% | — |
| FrontierScience | 67% | — |
| SimpleQA | 71% | — |
| Instruction FollowingClaude 4 Sonnet wins | ||
| IFEval | 83% | 77.0% |
| Multilingual | ||
| MGSM | 84% | — |
| MMLU-ProX | 81% | — |
| Mathematics | ||
| AIME 2023 | 73% | — |
| AIME 2024 | 75% | — |
| AIME 2025 | 74% | — |
| HMMT Feb 2023 | 69% | — |
| HMMT Feb 2024 | 71% | — |
| HMMT Feb 2025 | 70% | — |
| BRUMO 2025 | 72% | — |
| MATH-500 | 81% | — |
Claude 4 Sonnet is ahead overall, 62 to 39. The biggest single separator in this matchup is MMLU-Pro, where the scores are 75% and 20.0%.
Claude 4 Sonnet has the edge for knowledge tasks in this comparison, averaging 57.8 versus 23.8. Inside this category, MMLU-Pro is the benchmark that creates the most daylight between them.
Claude 4 Sonnet has the edge for instruction following in this comparison, averaging 83 versus 77. Inside this category, IFEval is the benchmark that creates the most daylight between them.
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