LFM2.5-350M vs Phi-4

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· Phi-4

Quick Verdict

Pick Phi-4 if you want the stronger benchmark profile. LFM2.5-350M only becomes the better choice if you need the larger 32K context window.

Phi-4 finishes one point ahead overall, 40 to 39. That is enough to call, but not enough to treat as a blowout. This matchup comes down to a few meaningful edges rather than one model dominating the board.

Phi-4's sharpest advantage is in knowledge, where it averages 53.6 against 23.8. The single biggest benchmark swing on the page is GPQA, 30.6% to 56.1%.

LFM2.5-350M gives you the larger context window at 32K, compared with 16K for Phi-4.

Operational tradeoffs

PriceFree*Free*
SpeedN/A35 t/s
TTFTN/A2.02s
Context32K16K

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.

BenchmarkLFM2.5-350MPhi-4
Agentic
Terminal-Bench 2.044%
BrowseComp35%
OSWorld-Verified34%
Coding
HumanEval82.6%
SWE-bench Pro55%
Multimodal & Grounded
MMMU-Pro54%
OfficeQA Pro38%
Reasoning
LongBench v230%
MRCRv233%
KnowledgePhi-4 wins
GPQA30.6%56.1%
MMLU-Pro20.0%
MMLU84.8%
FrontierScience52%
Instruction Following
IFEval77.0%
Multilingual
MGSM80.6%
MMLU-ProX60%
Mathematics
MATH-50094.6%
Frequently Asked Questions (2)

Which is better, LFM2.5-350M or Phi-4?

Phi-4 is ahead overall, 40 to 39. The biggest single separator in this matchup is GPQA, where the scores are 30.6% and 56.1%.

Which is better for knowledge tasks, LFM2.5-350M or Phi-4?

Phi-4 has the edge for knowledge tasks in this comparison, averaging 53.6 versus 23.8. Inside this category, GPQA is the benchmark that creates the most daylight between them.

Last updated: March 31, 2026

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