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Model comparison

DeepSeek V4 Flash Base vs LFM2.5-VL-450M

Data verified

Head-to-head evidence from 1 shared benchmark result across 1 category. Overall scores shown here use the public BenchAlign v5 ranking lane.

N/A
No comparison
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1 category wins0 category wins

Evidence parity. DeepSeek V4 Flash Base and LFM2.5-VL-450M share 1 comparable benchmark result. 1 of 8 categories are comparable. 23 results are unique to DeepSeek V4 Flash Base; 6 to LFM2.5-VL-450M.

Updated July 23, 2026
Shared results
1
DeepSeek V4 Flash Base only
23
LFM2.5-VL-450M only
6
Comparable categories
1 / 8

Treat this as a split decision. DeepSeek V4 Flash Base makes more sense if knowledge is the priority or you need the larger 1M context window; LFM2.5-VL-450M is the better fit if its strengths line up with your actual workload.

Confidence note. This is a partial-evidence comparison with 1 shared benchmark result across 1 evidence category; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.

Why this result

DeepSeek V4 Flash Base and LFM2.5-VL-450M finish on the same BenchAlign overall score, so this is less about a single winner and more about where the edge shows up. The BenchAlign headline says tie; the benchmark table is where the real choice happens.

DeepSeek V4 Flash Base gives you the larger context window at 1M, compared with 128K for LFM2.5-VL-450M.

Category breakdown

Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.

Category scores and score margins for DeepSeek V4 Flash Base and LFM2.5-VL-450M
CategoryDeepSeek V4 Flash BaseΔLFM2.5-VL-450M
KnowledgeDeepSeek V4 Flash Base56.4Margin← 35.9LFM2.5-VL-450M20.5
ReasoningDeepSeek V4 Flash Base44.7MarginNo overlapLFM2.5-VL-450MNot measured
Inst. FollowingDeepSeek V4 Flash BaseNot measuredMarginNo overlapLFM2.5-VL-450M61.2

Decisive benchmark drivers

The largest measured benchmark gaps in this matchup, with exact reported values.

More
A · DeepSeek V4 Flash BaseB · LFM2.5-VL-450M

  1. MMLU-Pro

    Knowledge
    Source ↗
    A 68.3%B 19.3%
    Winner: DeepSeek V4 Flash BaseΔ 49
    MMLU-Pro: DeepSeek V4 Flash Base scored 68.3%; LFM2.5-VL-450M scored 19.3%. DeepSeek V4 Flash Base wins this benchmark.

Operational comparison

Runtime and commercial metrics are compared only when both models have a complete sourced value.

MetricDeepSeek V4 Flash BaseLFM2.5-VL-450MComparison
Input / output priceUSD per 1M tokensDeepSeek V4 Flash BaseNot availableLFM2.5-VL-450M$0 input / $0 outputA complete price comparison is not available.
Generation speedtokens per secondDeepSeek V4 Flash BaseNot availableLFM2.5-VL-450MNot availableA complete speed comparison is not available.
First-answer latencyseconds to first tokenDeepSeek V4 Flash BaseNot availableLFM2.5-VL-450MNot availableA complete latency comparison is not available.
Context windowmaximum listed tokensDeepSeek V4 Flash Base1MLFM2.5-VL-450M128KDeepSeek V4 Flash Base lists the larger context window.

Benchmark Deep Dive

Agentic
BenchmarkDeepSeek V4 Flash BaseLFM2.5-VL-450MResult
BFCL v4Source —21.1%Not comparable
Coding
BenchmarkDeepSeek V4 Flash BaseLFM2.5-VL-450MResult
BigCodeBenchSource 56.8%—Not comparable
HumanEvalSource 69.5%—Not comparable
Reasoning
BenchmarkDeepSeek V4 Flash BaseLFM2.5-VL-450MResult
BBHSource 86.9%—Not comparable
DROPSource 88.6%—Not comparable
HellaSwagSource 85.7%—Not comparable
WinoGrandeSource 79.5%—Not comparable
CLUEWSCSource 82.2%—Not comparable
LongBench v2Source 44.7%—Not comparable
KnowledgeDeepSeek V4 Flash Base wins
BenchmarkDeepSeek V4 Flash BaseLFM2.5-VL-450MResult
AGIEvalSource 82.6%—Not comparable
MMLUSource 88.7%—Not comparable
MMLU-ReduxSource 89.4%—Not comparable
MMLU-ProSource 68.3%19.3%DeepSeek V4 Flash Base leads
MMMLUSource 88.8%—Not comparable
C-EvalSource 92.1%—Not comparable
CMMLUSource 90.4%—Not comparable
MultiLoKoSource 42.2%—Not comparable
SimpleQASource 30.1%—Not comparable
SuperGPQASource 46.5%—Not comparable
FACTS ParametricSource 33.9%—Not comparable
TriviaQASource 82.8%—Not comparable
GPQASource —25.7%Not comparable
Math
BenchmarkDeepSeek V4 Flash BaseLFM2.5-VL-450MResult
GSM8KSource 90.8%—Not comparable
MATHSource 57.4%—Not comparable
CMathSource 93.6%—Not comparable
Multilingual
BenchmarkDeepSeek V4 Flash BaseLFM2.5-VL-450MResult
MGSMSource 85.7%—Not comparable
Multimodal
BenchmarkDeepSeek V4 Flash BaseLFM2.5-VL-450MResult
MMMUSource —32.7%Not comparable
RealWorldQASource —58.4%Not comparable
CountBenchSource —73.3%Not comparable
Inst. Following
BenchmarkDeepSeek V4 Flash BaseLFM2.5-VL-450MResult
IFEvalSource —61.2%Not comparable
Frequently Asked Questions (2)

Which is better, DeepSeek V4 Flash Base or LFM2.5-VL-450M?

DeepSeek V4 Flash Base and LFM2.5-VL-450M are tied on the BenchAlign overall score, so the right pick depends on which category matters most for your use case.

Which is better for knowledge tasks, DeepSeek V4 Flash Base or LFM2.5-VL-450M?

DeepSeek V4 Flash Base has the edge for knowledge tasks in this comparison, averaging 56.4 versus 20.5. Inside this category, MMLU-Pro is the benchmark that creates the most daylight between them.

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Last updated: July 23, 2026

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