Noometry

Model comparison

DeepSeek V4.1 Flash vs Qwen Plus

DeepSeek V4.1 Flash is the stronger model overall, scoring 52.8 to 37.1 on the Noometry Index.

Last verified . 17 shared benchmarks.

DeepSeek V4.1 Flash DeepSeek

52.8

Rank #38 Confirmed

Qwen Plus Alibaba (Qwen)

37.1

Rank #210 Confirmed

Summary

  • They share 17 benchmarks with published results for both. DeepSeek V4.1 Flash scores higher in 8 categories and Qwen Plus in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where DeepSeek V4.1 Flash leads 66.7 to 23.3.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 98.3% for DeepSeek V4.1 Flash and 17.8% for Qwen Plus.
  • DeepSeek V4.1 Flash is cheaper at $0.15 / $0.60 per million input/output tokens, against $0.40 / $1.20 for Qwen Plus.
  • DeepSeek V4.1 Flash has downloadable open weights; the other is API-only.

Side by side

DeepSeek V4.1 FlashQwen Plus
ProviderDeepSeekAlibaba (Qwen)
Noometry Index52.837.1
Released2026-09-092024-01-25
WeightsOpenProprietary
Context window1M1M
Max output393K33K
Input $ / M tokens$0.15$0.40
Output $ / M tokens$0.60$1.20
Results tracked3720

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Category by category

Coding DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 52.9 (#32), Qwen Plus: 38.9 (#167)

BenchmarkDeepSeek V4.1 FlashQwen Plus
LMArena Coding15061328
LMArena WebDev1619—
SciCode51.9%—
ALE-Bench1,092—

Agentic & Tool Use Not comparable

DeepSeek V4.1 Flash: 31.2 (#69), Qwen Plus: —

BenchmarkDeepSeek V4.1 FlashQwen Plus
APEX-Agents39.5%—
GDP.pdf19.8%—

Reasoning DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 50.2 (#36), Qwen Plus: 28.4 (#107)

BenchmarkDeepSeek V4.1 FlashQwen Plus
LMArena Hard Prompts14831317
DTBench89.9%81.1%
LMCA47%24%
Kagi LLM Benchmark—63.3%
NYT Connections (extended)89.6%—
CritPt14.3%—
Mystery Game Puzzles43%—
Surface Evolver Bench46.3%—
Epoch Capabilities Index154.9—

Math DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 66.7 (#25), Qwen Plus: 23.3 (#271)

BenchmarkDeepSeek V4.1 FlashQwen Plus
OTIS Mock AIME 2024-202598.3%17.8%
LMArena Math14771326
FrontierMath (Tiers 1-3)67.4%—
FrontierMath Tier 426.8%—
ProofBench54%—
MATH Level 5—65.3%
FrontierMath (Feb 2025 set)—1.7%

Knowledge DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 57.9 (#38), Qwen Plus: 27.4 (#251)

BenchmarkDeepSeek V4.1 FlashQwen Plus
GPQA Diamond89.8%48.1%
LMArena Expert15061328

Multimodal Not comparable

DeepSeek V4.1 Flash: 39.1 (#61), Qwen Plus: —

BenchmarkDeepSeek V4.1 FlashQwen Plus
LMArena Vision1277—
Furniture Assembly34.2%—

Multilingual DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 55.0 (#35), Qwen Plus: 45.1 (#175)

BenchmarkDeepSeek V4.1 FlashQwen Plus
LMArena Non-English14481310
LMArena Chinese14971347
LMArena Japanese14121251
LMArena Russian14711323
LMArena French1452—
LMArena German1484—
LMArena Korean1452—
LMArena Spanish1459—

Instruction Following DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 77.3 (#26), Qwen Plus: 68.8 (#181)

BenchmarkDeepSeek V4.1 FlashQwen Plus
LMArena Instruction Following14741303

Long Context DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 45.2 (#47), Qwen Plus: 40.3 (#158)

BenchmarkDeepSeek V4.1 FlashQwen Plus
LMArena Longer Query14751324

Writing & Preference DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 65.4 (#48), Qwen Plus: 52.2 (#176)

BenchmarkDeepSeek V4.1 FlashQwen Plus
LMArena Text14621326
LMArena Creative Writing14351293
LMArena Multi-Turn14571336
EQ-Bench Creative Writing1540—

Frequently asked questions

Is DeepSeek V4.1 Flash better than Qwen Plus?

DeepSeek V4.1 Flash is the stronger model overall, scoring 52.8 to 37.1 on the Noometry Index.

Which is cheaper, DeepSeek V4.1 Flash or Qwen Plus?

DeepSeek V4.1 Flash is cheaper. It lists at $0.15 per million input tokens and $0.60 per million output tokens; Qwen Plus lists at $0.40 and $1.20.

Is DeepSeek V4.1 Flash or Qwen Plus better for coding?

DeepSeek V4.1 Flash scores higher on coding benchmarks: 52.9 versus 38.9 in the Noometry coding category.

Which has the bigger context window?

Both accept 1M tokens.

How many benchmarks do DeepSeek V4.1 Flash and Qwen Plus share?

17 benchmarks have published results for both models. DeepSeek V4.1 Flash has 37 scored results on Noometry and Qwen Plus has 20.

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