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© 2026 CompareLLM. Public benchmark data aggregated from Arena Elo, LiveBench, SWE-bench & OpenRouter.

Every score has a dated snapshot.

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  3. DeepSeek V4 Flash Latest vs Qwen 2.5 Plus

Pairwise benchmark snapshot · Aug 17, 2026noindex (thin pair)

DeepSeek V4 Flash Latest vs Qwen 2.5 Plus benchmark

In this head-to-head showdown, DeepSeek V4 Flash Latest is more budget-friendly at $0.1206/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.

Executive Comparison Verdict

Bottom Line: Both DeepSeek V4 Flash Latest and Qwen 2.5 Plus present distinct architectural strengths. Compare the verified benchmark matrix below to choose the model tailored to your specific application requirements.
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~deepseek
DeepSeek V4 Flash Latest

Auto-discovered from OpenRouter (~deepseek/deepseek-v4-flash-latest). Preview until a second source matches.

$0.12060000000000001/1M out
Alibaba
Qwen 2.5 Plus

Alibaba balanced flagship API model with high-throughput general reasoning.

Elo 1,445$1/1M out
Top Rival Showdowns for DeepSeek V4 Flash Latest
All Matchups
Compare vs:vs Claude Opus 4.5vs GPT-5vs Gemini 3 Provs Grok 4.6vs DeepSeek V4 Pro
Preference Leader

No shared data

Single model data

Throughput Leader

No shared data

No latency data

Value per Dollar Leader

DeepSeek V4 Flash Latest

$0.12060000000000001 / 1M output

Capability Percentiles

Relative percentile scores computed across all active models in the benchmark catalog.

Capability Matchup Radar

Multi-Dimensional Capability Radar

Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.

Tap any node to inspect
Percentile 0–100
Dimensional AdvantageQwen 2.5 Plus 4/6
Head-to-Head Comparison

Overall Matchup Breakdown

Category wins across reasoning intelligence, generation speed, and token cost.

DeepSeek V4 Flash Latest (3)vsQwen 2.5 Plus (7)
DeepSeek V4 Flash Latest: 3W (30%)Overall: Qwen 2.5 PlusQwen 2.5 Plus: 7W (70%)
← DeepSeek V4 Flash LatestQwen 2.5 Plus →
Qwen 2.5 Plus (5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo
—vs1,445
Coding Elo
—vs1,460
SWE-bench
—vs59.2%
LiveBench
—vs63.5%
GPQA Diamond
—vs75.8%
DeepSeek V4 Flash Latest: 0WQwen 2.5 Plus: 5W
Qwen 2.5 Plus (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed
—vs110 tok/s
Time to first token
—vs180 ms
DeepSeek V4 Flash Latest: 0WQwen 2.5 Plus: 2W
DeepSeek V4 Flash Latest (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price
$0.1206/1Mvs$1/1M
Input price
$0.0603/1Mvs$0.25/1M
Context window
1.3Mvs128k
DeepSeek V4 Flash Latest: 3WQwen 2.5 Plus: 0W

Side-by-Side Benchmark Matrix

Preference Elo
DeepSeek V4 Flash Latest—
Qwen 2.5 Plus1,445
lmarena · Aug 17, 2026
Coding Elo
DeepSeek V4 Flash Latest—
Qwen 2.5 Plus1,460
lmarena · Aug 17, 2026
LiveBench
DeepSeek V4 Flash Latest—
Qwen 2.5 Plus63.5%
livebench · Aug 17, 2026
SWE-bench
DeepSeek V4 Flash Latest—
Qwen 2.5 Plus59.2%
swebench · Aug 17, 2026
GPQA Diamond
DeepSeek V4 Flash Latest—
Qwen 2.5 Plus75.8%
seed-bootstrap · Aug 1, 2026
Time to first token
DeepSeek V4 Flash Latest—
Qwen 2.5 Plus180 ms
seed-bootstrap · Aug 1, 2026
Output speed
DeepSeek V4 Flash Latest—
Qwen 2.5 Plus110 tok/s
seed-bootstrap · Aug 1, 2026
Input priceDeepSeek V4 Flash Latest (+$0.1897/1M)
DeepSeek V4 Flash Latest$0.0603/1M
openrouter · Aug 17, 2026
Qwen 2.5 Plus$0.25/1M
seed-bootstrap · Aug 1, 2026
Output priceDeepSeek V4 Flash Latest (+$0.8794/1M)
DeepSeek V4 Flash Latest$0.1206/1M
openrouter · Aug 17, 2026
Qwen 2.5 Plus$1/1M
seed-bootstrap · Aug 1, 2026
Context windowDeepSeek V4 Flash Latest (+1.2M)
DeepSeek V4 Flash Latest1.3M
openrouter · Aug 17, 2026
Qwen 2.5 Plus128k
seed-bootstrap · Aug 1, 2026
BenchmarkDeepSeek V4 Flash LatestQwen 2.5 PlusAdvantage Delta
Preference Elo—
1,445
lmarena · Aug 17, 2026
—
Coding Elo—
1,460
lmarena · Aug 17, 2026
—
LiveBench—
63.5%
livebench · Aug 17, 2026
—
SWE-bench—
59.2%
swebench · Aug 17, 2026
—
GPQA Diamond—
75.8%
seed-bootstrap · Aug 1, 2026
—
Time to first token—
180 ms
seed-bootstrap · Aug 1, 2026
—
Output speed—
110 tok/s
seed-bootstrap · Aug 1, 2026
—
Input price
$0.0603/1M
openrouter · Aug 17, 2026
$0.25/1M
seed-bootstrap · Aug 1, 2026
DeepSeek V4 Flash Latest (+$0.1897/1M)
Output price
$0.1206/1M
openrouter · Aug 17, 2026
$1/1M
seed-bootstrap · Aug 1, 2026
DeepSeek V4 Flash Latest (+$0.8794/1M)
Context window
1.3M
openrouter · Aug 17, 2026
128k
seed-bootstrap · Aug 1, 2026
DeepSeek V4 Flash Latest (+1.2M)
Interactive Simulator (USD)

Workload Cost & Savings Calculator

Simulate monthly production API costs in USD (US Dollar).

Save up to 83% with DeepSeek V4 Flash Latest
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
DeepSeek V4 Flash Latest$3.92 / mo
In: $2.11Out: $1.81
Qwen 2.5 Plus$23.75 / mo
In: $8.75Out: $15
Estimated Cost Delta

DeepSeek V4 Flash Latest is estimated to save $19.83/month ($238/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    DeepSeek V4 Flash Latest:Pick DeepSeek V4 Flash Latest when you are optimizing output cost.
  • 2
    DeepSeek V4 Flash Latest:Pick DeepSeek V4 Flash Latest for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatDeepSeek V4 Flash Latest

Lower output list price ($0.1206/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGDeepSeek V4 Flash Latest

Larger window (1.3M).

Screenshots / visionQwen 2.5 Plus

Qwen 2.5 Plus is the side marked multimodal in the catalog.

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsinsufficient dataNeed SWE-bench on both sides.
High-volume chatDeepSeek V4 Flash LatestLower output list price ($0.1206/1M).
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGDeepSeek V4 Flash LatestLarger window (1.3M).
Screenshots / visionQwen 2.5 PlusQwen 2.5 Plus is the side marked multimodal in the catalog.
Community Sentiment

Cast Your Matchup Vote

0 total votes

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CompareLLM Matrix

Verified head-to-head card

LIVE
VS
~deepseek

DeepSeek V4 Flash Latest

Elo n/a
LiveBench—
SWE-bench—
Speed—
Output cost$0.1206/1M
Alibaba

Qwen 2.5 Plus

Elo 1,445
LiveBench63.5%
SWE-bench59.2%
Speed110 tok/s
Output cost$1/1M

Frequently Asked Questions

Which is better overall, DeepSeek V4 Flash Latest or Qwen 2.5 Plus?
We do not have preference Elo for both models, so we do not declare an overall winner. Compare the metrics that exist.
Which is better at coding, DeepSeek V4 Flash Latest or Qwen 2.5 Plus?
SWE-bench is missing for at least one model, so we do not rank coding from a single number.
Which is cheaper to run in production?
DeepSeek V4 Flash Latest output tokens are $0.1206/1M versus $1/1M. Input prices and retry rates still move the real bill.
Which is faster, DeepSeek V4 Flash Latest or Qwen 2.5 Plus?
We do not have TTFT for both models.
Which has the larger context window?
DeepSeek V4 Flash Latest accepts 1.3M tokens versus 128k.
Can I self-host either model?
Neither model is marked open-weights here. You are comparing hosted APIs.
Are these scores from CompareLLM’s own evals?
No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?
Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. DeepSeek V4 Flash Latest and Qwen 2.5 Plus Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All DeepSeek V4 Flash Latest matchups →|All Qwen 2.5 Plus matchups →
Qwen 2.5 Plus vs Qwen2.5 Coder 32B Instruct (previous qwen)Qwen 2.5 Plus vs Qwen 2.5 Coder 32B (next qwen)Qwen 3 Max vs Qwen 2.5 PlusQwen QwQ 32B vs Qwen 2.5 PlusClaude Opus 4.5 vs Qwen 2.5 PlusClaude Opus 4.6 vs Qwen 2.5 Plus