Noometry

Model comparison

DeepSeek V4 Flash vs Qwen3.8 Flash

DeepSeek V4 Flash has enough public results to be ranked (#35); Qwen3.8 Flash does not yet, so treat this comparison as directional.

Last verified . 0 shared benchmarks.

DeepSeek V4 Flash DeepSeek

53.6

Rank #35 Confirmed

Qwen3.8 Flash Alibaba (Qwen)

35.5

Unranked Sparse

Summary

  • Qwen3.8 Flash is cheaper at $0.15 / $0.47 per million input/output tokens, against $0.15 / $0.60 for DeepSeek V4 Flash.
  • DeepSeek V4 Flash has downloadable open weights; the other is API-only.

Side by side

DeepSeek V4 FlashQwen3.8 Flash
ProviderDeepSeekAlibaba (Qwen)
Noometry Index53.635.5
Released2026-04-242026-08-26
WeightsOpenProprietary
Context window1M1M
Max output393K131K
Input $ / M tokens$0.15$0.15
Output $ / M tokens$0.60$0.47
Results tracked411

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Category by category

Coding Not comparable

DeepSeek V4 Flash: 47.9 (#59), Qwen3.8 Flash: —

BenchmarkDeepSeek V4 FlashQwen3.8 Flash
FrontierCode18.8%—
LMArena WebDev1582—
SciCode49.9%—
WeirdML63%—
LMArena Coding1457—
ALE-Bench1,306—

Agentic & Tool Use Not comparable

DeepSeek V4 Flash: —, Qwen3.8 Flash: 31.3

BenchmarkDeepSeek V4 FlashQwen3.8 Flash
GDP.pdf—16.6%

Reasoning Not comparable

DeepSeek V4 Flash: 53.7 (#30), Qwen3.8 Flash: —

BenchmarkDeepSeek V4 FlashQwen3.8 Flash
ARC-AGI-261.4%—
SimpleBench61.1%—
Kagi LLM Benchmark52.2%—
NYT Connections (extended)89.6%—
ARC-AGI-189%—
CritPt16.6%—
Chess Puzzles33%—
LMArena Hard Prompts1444—
Mystery Game Puzzles34%—
DTBench90.9%—
LMCA41.7%—
Epoch Capabilities Index154.49—

Math Not comparable

DeepSeek V4 Flash: 60.3 (#37), Qwen3.8 Flash: —

BenchmarkDeepSeek V4 FlashQwen3.8 Flash
FrontierMath (Tiers 1-3)57.5%—
FrontierMath Tier 424.4%—
MathArena Final-Answer Competitions76.5%—
OTIS Mock AIME 2024-202594.4%—
ProofBench56%—
LMArena Math1427—

Knowledge Not comparable

DeepSeek V4 Flash: 55.4 (#48), Qwen3.8 Flash: —

BenchmarkDeepSeek V4 FlashQwen3.8 Flash
GPQA Diamond91%—
SimpleQA Verified33.6%—
LMArena Expert1441—

Multilingual Not comparable

DeepSeek V4 Flash: 53.0 (#72), Qwen3.8 Flash: —

BenchmarkDeepSeek V4 FlashQwen3.8 Flash
LMArena Non-English1420—
LMArena Chinese1468—
LMArena French1439—
LMArena German1418—
LMArena Japanese1406—
LMArena Korean1384—
LMArena Russian1428—
LMArena Spanish1436—

Instruction Following Not comparable

DeepSeek V4 Flash: 74.9 (#81), Qwen3.8 Flash: —

BenchmarkDeepSeek V4 FlashQwen3.8 Flash
LMArena Instruction Following1421—

Long Context Not comparable

DeepSeek V4 Flash: 43.8 (#85), Qwen3.8 Flash: —

BenchmarkDeepSeek V4 FlashQwen3.8 Flash
LMArena Longer Query1434—

Writing & Preference Not comparable

DeepSeek V4 Flash: 63.8 (#61), Qwen3.8 Flash: —

BenchmarkDeepSeek V4 FlashQwen3.8 Flash
LMArena Text1432—
LMArena Creative Writing1403—
EQ-Bench Creative Writing1559—
LMArena Multi-Turn1449—

Frequently asked questions

Is DeepSeek V4 Flash better than Qwen3.8 Flash?

DeepSeek V4 Flash has enough public results to be ranked (#35); Qwen3.8 Flash does not yet, so treat this comparison as directional.

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

Qwen3.8 Flash is cheaper. It lists at $0.15 per million input tokens and $0.47 per million output tokens; DeepSeek V4 Flash lists at $0.15 and $0.60.

Which has the bigger context window?

Both accept 1M tokens.

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

0 benchmarks have published results for both models. DeepSeek V4 Flash has 41 scored results on Noometry and Qwen3.8 Flash has 1.

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