LFM2.5-350M vs Mistral Small 4 (Reasoning)

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

Agentic
Coding
Multimodal & Grounded
Reasoning
Knowledge
Instruction Following
Multilingual
Mathematics

LFM2.5-350M· Mistral Small 4 (Reasoning)

Quick Verdict

Pick Mistral Small 4 (Reasoning) if you want the stronger benchmark profile. LFM2.5-350M only becomes the better choice if you would rather avoid the extra latency and token burn of a reasoning model.

Mistral Small 4 (Reasoning) is clearly ahead on the aggregate, 64 to 39. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Mistral Small 4 (Reasoning)'s sharpest advantage is in knowledge, where it averages 75.6 against 23.8. The single biggest benchmark swing on the page is MMLU-Pro, 20.0% to 78%.

Mistral Small 4 (Reasoning) is the reasoning model in the pair, while LFM2.5-350M 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. Mistral Small 4 (Reasoning) gives you the larger context window at 256K, compared with 32K for LFM2.5-350M.

Operational tradeoffs

PriceFree*Free*
SpeedN/AN/A
TTFTN/AN/A
Context32K256K

Decision framing

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.

BenchmarkLFM2.5-350MMistral Small 4 (Reasoning)
Agentic
Coming soon
Coding
LiveCodeBench63.6%
Multimodal & Grounded
MMMU-Pro60%
Reasoning
Coming soon
KnowledgeMistral Small 4 (Reasoning) wins
GPQA30.6%71.2%
MMLU-Pro20.0%78%
Instruction Following
IFEval77.0%
Multilingual
Coming soon
Mathematics
AIME 202583.8%
Frequently Asked Questions (2)

Which is better, LFM2.5-350M or Mistral Small 4 (Reasoning)?

Mistral Small 4 (Reasoning) is ahead overall, 64 to 39. The biggest single separator in this matchup is MMLU-Pro, where the scores are 20.0% and 78%.

Which is better for knowledge tasks, LFM2.5-350M or Mistral Small 4 (Reasoning)?

Mistral Small 4 (Reasoning) has the edge for knowledge tasks in this comparison, averaging 75.6 versus 23.8. Inside this category, MMLU-Pro is the benchmark that creates the most daylight between them.

Last updated: March 31, 2026

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