Noometry

Model comparison

DeepSeek V4 Flash vs Qwen3.8 27B

DeepSeek V4 Flash is the stronger model overall, scoring 53.6 to 46.0 on the Noometry Index.

Last verified . 28 shared benchmarks.

DeepSeek V4 Flash DeepSeek

53.6

Rank #35 Confirmed

Qwen3.8 27B Alibaba (Qwen)

46.0

Rank #68 Confirmed

Summary

  • They share 28 benchmarks with published results for both. DeepSeek V4 Flash scores higher in 3 categories and Qwen3.8 27B in 5 categories; 5 gaps are clear of the uncertainty.
  • The widest gap is in math, where DeepSeek V4 Flash leads 60.3 to 37.1.
  • The biggest single-benchmark swing is ProofBench: 56% for DeepSeek V4 Flash and 16% for Qwen3.8 27B.
  • DeepSeek V4 Flash is cheaper at $0.15 / $0.60 per million input/output tokens, against $0.99 / $1.49 for Qwen3.8 27B.
  • DeepSeek V4 Flash accepts more context: 1M tokens versus 262K.

Side by side

DeepSeek V4 FlashQwen3.8 27B
ProviderDeepSeekAlibaba (Qwen)
Noometry Index53.646.0
Released2026-04-242026-08-14
WeightsOpenOpen
Context window1M262K
Max output393K33K
Input $ / M tokens$0.15$0.99
Output $ / M tokens$0.60$1.49
Results tracked4131

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Category by category

Coding Qwen3.8 27B leads

DeepSeek V4 Flash: 47.9 (#59), Qwen3.8 27B: 50.5 (#44)

BenchmarkDeepSeek V4 FlashQwen3.8 27B
LMArena WebDev15821593
SciCode49.9%46.6%
LMArena Coding14571482
FrontierCode18.8%—
WeirdML63%—
ALE-Bench1,306—

Agentic & Tool Use Not comparable

DeepSeek V4 Flash: —, Qwen3.8 27B: 32.9 (#57)

BenchmarkDeepSeek V4 FlashQwen3.8 27B
APEX-Agents—47.5%

Reasoning DeepSeek V4 Flash leads

DeepSeek V4 Flash: 53.7 (#30), Qwen3.8 27B: 41.0 (#54)

BenchmarkDeepSeek V4 FlashQwen3.8 27B
ARC-AGI-261.4%42.4%
NYT Connections (extended)89.6%54.5%
ARC-AGI-189%87.5%
CritPt16.6%5.4%
LMArena Hard Prompts14441460
DTBench90.9%88%
LMCA41.7%41.4%
Epoch Capabilities Index154.49149.38
SimpleBench61.1%—
Kagi LLM Benchmark52.2%—
Chess Puzzles33%—
Mystery Game Puzzles34%—
Surface Evolver Bench—45%

Math DeepSeek V4 Flash leads

DeepSeek V4 Flash: 60.3 (#37), Qwen3.8 27B: 37.1 (#161)

BenchmarkDeepSeek V4 FlashQwen3.8 27B
ProofBench56%16%
LMArena Math14271456
FrontierMath (Tiers 1-3)57.5%—
FrontierMath Tier 424.4%—
MathArena Final-Answer Competitions76.5%—
OTIS Mock AIME 2024-202594.4%—

Knowledge DeepSeek V4 Flash leads

DeepSeek V4 Flash: 55.4 (#48), Qwen3.8 27B: 41.6 (#109)

BenchmarkDeepSeek V4 FlashQwen3.8 27B
LMArena Expert14411482
GPQA Diamond91%—
SimpleQA Verified33.6%—

Multimodal Not comparable

DeepSeek V4 Flash: —, Qwen3.8 27B: 41.3 (#37)

BenchmarkDeepSeek V4 FlashQwen3.8 27B
LMArena Vision—1271

Multilingual Too close to call

DeepSeek V4 Flash: 53.0 (#72), Qwen3.8 27B: 53.7 (#60)

BenchmarkDeepSeek V4 FlashQwen3.8 27B
LMArena Non-English14201430
LMArena Chinese14681504
LMArena French14391465
LMArena German14181438
LMArena Japanese14061384
LMArena Korean13841393
LMArena Russian14281415
LMArena Spanish14361448

Instruction Following Too close to call

DeepSeek V4 Flash: 74.9 (#81), Qwen3.8 27B: 75.8 (#53)

BenchmarkDeepSeek V4 FlashQwen3.8 27B
LMArena Instruction Following14211439

Long Context Too close to call

DeepSeek V4 Flash: 43.8 (#85), Qwen3.8 27B: 44.3 (#70)

BenchmarkDeepSeek V4 FlashQwen3.8 27B
LMArena Longer Query14341450

Writing & Preference Qwen3.8 27B leads

DeepSeek V4 Flash: 63.8 (#61), Qwen3.8 27B: 65.8 (#43)

BenchmarkDeepSeek V4 FlashQwen3.8 27B
LMArena Text14321441
LMArena Creative Writing14031384
EQ-Bench Creative Writing15591671
LMArena Multi-Turn14491441

Frequently asked questions

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

DeepSeek V4 Flash is the stronger model overall, scoring 53.6 to 46.0 on the Noometry Index.

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

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

Qwen3.8 27B scores higher on coding benchmarks: 50.5 versus 47.9 in the Noometry coding category.

Which has the bigger context window?

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

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

28 benchmarks have published results for both models. DeepSeek V4 Flash has 41 scored results on Noometry and Qwen3.8 27B has 31.

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