GPT-4 Turbo vs LFM2.5-350M

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

Agentic
Coding
Multimodal & Grounded
Reasoning
Knowledge
Instruction Following
Multilingual
Mathematics

GPT-4 Turbo· LFM2.5-350M

Quick Verdict

Pick GPT-4 Turbo 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.

GPT-4 Turbo is clearly ahead on the aggregate, 45 to 39. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

GPT-4 Turbo's sharpest advantage is in knowledge, where it averages 54.9 against 23.8. The single biggest benchmark swing on the page is MMLU-Pro, 51% to 20.0%.

GPT-4 Turbo gives you the larger context window at 128K, compared with 32K for LFM2.5-350M.

Operational tradeoffs

PricePricing unavailableFree*
Speed30 t/sN/A
TTFT2.84sN/A
Context128K32K

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.

BenchmarkGPT-4 TurboLFM2.5-350M
Agentic
Terminal-Bench 2.042%
BrowseComp54%
OSWorld-Verified41%
Coding
HumanEval52%
SWE-bench Verified5%
LiveCodeBench23%
SWE-bench Pro14%
Multimodal & Grounded
MMMU-Pro53%
OfficeQA Pro58%
Reasoning
MuSR56%
BBH75%
LongBench v262%
MRCRv262%
KnowledgeGPT-4 Turbo wins
MMLU60%
GPQA60%30.6%
SuperGPQA58%
MMLU-Pro51%20.0%
FrontierScience52%
SimpleQA58%
Instruction FollowingGPT-4 Turbo wins
IFEval80%77.0%
Multilingual
MMLU-ProX65%
Mathematics
AIME 202360%
AIME 202462%
AIME 202561%
HMMT Feb 202356%
HMMT Feb 202458%
HMMT Feb 202557%
BRUMO 202559%
MATH-50071%
Frequently Asked Questions (3)

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

GPT-4 Turbo is ahead overall, 45 to 39. The biggest single separator in this matchup is MMLU-Pro, where the scores are 51% and 20.0%.

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

GPT-4 Turbo has the edge for knowledge tasks in this comparison, averaging 54.9 versus 23.8. Inside this category, MMLU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, GPT-4 Turbo or LFM2.5-350M?

GPT-4 Turbo has the edge for instruction following in this comparison, averaging 80 versus 77. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Last updated: March 31, 2026

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