Noometry

Model comparison

DeepSeek V4.1 Flash vs Qwen3.8 27B

DeepSeek V4.1 Flash is the stronger model overall, scoring 52.8 to 46.0 on the Noometry Index.

Last verified . 29 shared benchmarks.

DeepSeek V4.1 Flash DeepSeek

52.8

Rank #38 Confirmed

Qwen3.8 27B Alibaba (Qwen)

46.0

Rank #68 Confirmed

Summary

  • They share 29 benchmarks with published results for both. DeepSeek V4.1 Flash scores higher in 7 categories and Qwen3.8 27B in 3 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where DeepSeek V4.1 Flash leads 66.7 to 37.1.
  • The biggest single-benchmark swing is ProofBench: 54% for DeepSeek V4.1 Flash and 16% for Qwen3.8 27B.
  • DeepSeek V4.1 Flash is cheaper at $0.15 / $0.60 per million input/output tokens, against $0.99 / $1.49 for Qwen3.8 27B.
  • DeepSeek V4.1 Flash accepts more context: 1M tokens versus 262K.

Side by side

DeepSeek V4.1 FlashQwen3.8 27B
ProviderDeepSeekAlibaba (Qwen)
Noometry Index52.846.0
Released2026-09-092026-08-14
WeightsOpenOpen
Context window1M262K
Max output393K33K
Input $ / M tokens$0.15$0.99
Output $ / M tokens$0.60$1.49
Results tracked3731

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Category by category

Coding DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 52.9 (#32), Qwen3.8 27B: 50.5 (#44)

BenchmarkDeepSeek V4.1 FlashQwen3.8 27B
LMArena WebDev16191593
SciCode51.9%46.6%
LMArena Coding15061482
ALE-Bench1,092—

Agentic & Tool Use Qwen3.8 27B leads

DeepSeek V4.1 Flash: 31.2 (#69), Qwen3.8 27B: 32.9 (#57)

BenchmarkDeepSeek V4.1 FlashQwen3.8 27B
APEX-Agents39.5%47.5%
GDP.pdf19.8%—

Reasoning DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 50.2 (#36), Qwen3.8 27B: 41.0 (#54)

BenchmarkDeepSeek V4.1 FlashQwen3.8 27B
NYT Connections (extended)89.6%54.5%
CritPt14.3%5.4%
LMArena Hard Prompts14831460
DTBench89.9%88%
LMCA47%41.4%
Surface Evolver Bench46.3%45%
Epoch Capabilities Index154.9149.38
ARC-AGI-2—42.4%
ARC-AGI-1—87.5%
Mystery Game Puzzles43%—

Math DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 66.7 (#25), Qwen3.8 27B: 37.1 (#161)

BenchmarkDeepSeek V4.1 FlashQwen3.8 27B
ProofBench54%16%
LMArena Math14771456
FrontierMath (Tiers 1-3)67.4%—
FrontierMath Tier 426.8%—
OTIS Mock AIME 2024-202598.3%—

Knowledge DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 57.9 (#38), Qwen3.8 27B: 41.6 (#109)

BenchmarkDeepSeek V4.1 FlashQwen3.8 27B
LMArena Expert15061482
GPQA Diamond89.8%—

Multimodal Qwen3.8 27B leads

DeepSeek V4.1 Flash: 39.1 (#61), Qwen3.8 27B: 41.3 (#37)

BenchmarkDeepSeek V4.1 FlashQwen3.8 27B
LMArena Vision12771271
Furniture Assembly34.2%—

Multilingual DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 55.0 (#35), Qwen3.8 27B: 53.7 (#60)

BenchmarkDeepSeek V4.1 FlashQwen3.8 27B
LMArena Non-English14481430
LMArena Chinese14971504
LMArena French14521465
LMArena German14841438
LMArena Japanese14121384
LMArena Korean14521393
LMArena Russian14711415
LMArena Spanish14591448

Instruction Following DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 77.3 (#26), Qwen3.8 27B: 75.8 (#53)

BenchmarkDeepSeek V4.1 FlashQwen3.8 27B
LMArena Instruction Following14741439

Long Context Too close to call

DeepSeek V4.1 Flash: 45.2 (#47), Qwen3.8 27B: 44.3 (#70)

BenchmarkDeepSeek V4.1 FlashQwen3.8 27B
LMArena Longer Query14751450

Writing & Preference Too close to call

DeepSeek V4.1 Flash: 65.4 (#48), Qwen3.8 27B: 65.8 (#43)

BenchmarkDeepSeek V4.1 FlashQwen3.8 27B
LMArena Text14621441
LMArena Creative Writing14351384
EQ-Bench Creative Writing15401671
LMArena Multi-Turn14571441

Frequently asked questions

Is DeepSeek V4.1 Flash better than Qwen3.8 27B?

DeepSeek V4.1 Flash is the stronger model overall, scoring 52.8 to 46.0 on the Noometry Index.

Which is cheaper, DeepSeek V4.1 Flash or Qwen3.8 27B?

DeepSeek V4.1 Flash is cheaper. It lists at $0.15 per million input tokens and $0.60 per million output tokens; Qwen3.8 27B lists at $0.99 and $1.49.

Is DeepSeek V4.1 Flash or Qwen3.8 27B better for coding?

DeepSeek V4.1 Flash scores higher on coding benchmarks: 52.9 versus 50.5 in the Noometry coding category.

Which has the bigger context window?

DeepSeek V4.1 Flash does, with 1M tokens against 262K.

How many benchmarks do DeepSeek V4.1 Flash and Qwen3.8 27B share?

29 benchmarks have published results for both models. DeepSeek V4.1 Flash has 37 scored results on Noometry and Qwen3.8 27B has 31.

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