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DeepSeek V4.1 Flash vs Qwen3.7 Plus

DeepSeek V4.1 Flash leads Qwen3.7 Plus on coding, 62.5 to 33.2 on the Vibe Coding Index, and DeepSeek V4.1 Flash costs 1.6x less per output token ($0.78 vs $1.28 per million). Updated October 21, 2026; 65 benchmarks have a result for both.

Replace DeepSeek V4.1 Flash Replace Qwen3.7 Plus
DeepSeek V4.1 FlashDeepSeek
Coding
62.5
Overall
62.4
Output $/M
$0.78
55
Qwen3.7 PlusQwen
Coding
33.2
Overall
54.0
Output $/M
$1.28
10
vs boards won of 65 shared

DeepSeek V4.1 Flash or Qwen3.7 Plus: which to pick

Pick DeepSeek V4.1 Flash for coding: it scores 62.5 on the Vibe Coding Index against 33.2 for Qwen3.7 Plus.

Pick Qwen3.7 Plus for work measured by AA Intelligence Index or LMArena Text: legal and government, where it leads.

Model ADeepSeek V4.1 FlashDeepSeek62.5/1005 independent benchmarksNo cost per solved taskModel BQwen3.7 PlusQwen33.2/1002 independent benchmarksNo cost per solved task
Shared results
65
DeepSeek V4.1 Flash only
36
Qwen3.7 Plus only
10
Like-for-like categories
8 of 9

Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.

Which one for your work

Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.

At a glance

Coding index
DeepSeek V4.1 Flash 62.5 from 5 benchmarks, Qwen3.7 Plus 33.2 from 2 benchmarks.
Widest category
Coding, 21.8 points apart on average over 8 shared benchmarks.
Widest single gap
FrontierCode: DeepSeek V4.1 Flash 43.9% against Qwen3.7 Plus 10.2%, 51.8 points apart on a 0 to 100 scale.
Output price
DeepSeek V4.1 Flash $0.78 against Qwen3.7 Plus $1.28 per million output tokens, 1.6x apart.
Context window
DeepSeek V4.1 Flash takes 1.05M tokens, Qwen3.7 Plus 1M.

Benchmark by benchmark

First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.

Boards won, where both have a result
CategoryDeepSeek V4.1 FlashBarsQwen3.7 PlusTies
Coding80
Intelligence11
Agentic work40
Reasoning80
Math40
Knowledge31
Web design80
General198
All shared boards5510
CodingLike-for-likeSix of these boards feed the Vibe Coding Index80
Coding benchmarks for DeepSeek V4.1 Flash and Qwen3.7 Plus
BenchmarkDeepSeek V4.1 FlashQwen3.7 PlusLeader
LiveBench coding90.2%Not measuredOnly DeepSeek V4.1 Flash measured
LMArena WebDev1618Not measuredOnly DeepSeek V4.1 Flash measured
AA Coding IndexNot measured55.9Only Qwen3.7 Plus measured
Terminal-Bench 4 (Vals AI)19.7%Not measuredOnly DeepSeek V4.1 Flash measured
Vibe Code Bench (Vals AI)84.7%46.4%DeepSeek V4.1 Flash
Code migration (Vals AI)45.6%12.9%DeepSeek V4.1 Flash
ProgramBench (Vals AI)0.5%Not measuredOnly DeepSeek V4.1 Flash measured
IOI (Vals AI)40.3%Not measuredOnly DeepSeek V4.1 Flash measured
Terminal-Bench 2.1 (Vals AI)74.5%52.8%DeepSeek V4.1 Flash
SWE-bench Multimodal (Vals AI)46.5%Not measuredOnly DeepSeek V4.1 Flash measured
Vibe Code Bench 1-100 (Vals AI)16.4%Not measuredOnly DeepSeek V4.1 Flash measured
SkillsBench (Vals AI)69.8%54.3%DeepSeek V4.1 Flash
CyberBench (Vals AI)73.7%Not measuredOnly DeepSeek V4.1 Flash measured
SciCode51.9%46.1%DeepSeek V4.1 Flash
Terminal-Bench Hard (Artificial Analysis run)Not measured47.0%Only Qwen3.7 Plus measured
FrontierCode43.9%10.2%DeepSeek V4.1 Flash
ALE-Bench1092.3Not measuredOnly DeepSeek V4.1 Flash measured
LMArena Text: coding15021473DeepSeek V4.1 Flash
LMArena Text: software and IT14961473DeepSeek V4.1 Flash
LMArena WebDev: React1628Not measuredOnly DeepSeek V4.1 Flash measured
LMArena WebDev: HTML1612Not measuredOnly DeepSeek V4.1 Flash measured
LMArena WebDev: from an image1606Not measuredOnly DeepSeek V4.1 Flash measured
Neither model has a result on the other 17 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index11
Intelligence benchmarks for DeepSeek V4.1 Flash and Qwen3.7 Plus
BenchmarkDeepSeek V4.1 FlashQwen3.7 PlusLeader
AA Intelligence Index24.725.2Qwen3.7 Plus
Epoch Capabilities Index155.9147.0DeepSeek V4.1 Flash
Agentic workLike-for-likePublic boards, shown as published, kept out of the index40
Agentic work benchmarks for DeepSeek V4.1 Flash and Qwen3.7 Plus
BenchmarkDeepSeek V4.1 FlashQwen3.7 PlusLeader
AA Agentic IndexNot measured17.5Only Qwen3.7 Plus measured
LiveBench research86.8%Not measuredOnly DeepSeek V4.1 Flash measured
LiveBench browser84.0%Not measuredOnly DeepSeek V4.1 Flash measured
LiveBench long agentic40.1%Not measuredOnly DeepSeek V4.1 Flash measured
SREBench (Vals AI)0.8%Not measuredOnly DeepSeek V4.1 Flash measured
Finance Agent (Vals AI)53.5%38.2%DeepSeek V4.1 Flash
Tax Agent Bench (Vals AI)26.6%10.5%DeepSeek V4.1 Flash
Legal Research Bench (Vals AI)41.4%16.4%DeepSeek V4.1 Flash
Excel Modeling Benchmark (Vals AI)57.2%49.3%DeepSeek V4.1 Flash
BioMysteryBench (Vals AI)67.8%Not measuredOnly DeepSeek V4.1 Flash measured
Terminal-Bench-Science (Vals AI)0.0%Not measuredOnly DeepSeek V4.1 Flash measured
Vals Science Index29.6%Not measuredOnly DeepSeek V4.1 Flash measured
τ²-Bench TelecomNot measured93.0%Only Qwen3.7 Plus measured
APEX-Agents39.5%Not measuredOnly DeepSeek V4.1 Flash measured
OSWorld 2.0Not measured2.8%Only Qwen3.7 Plus measured
Neither model has a result on the other 26 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index80
Reasoning benchmarks for DeepSeek V4.1 Flash and Qwen3.7 Plus
BenchmarkDeepSeek V4.1 FlashQwen3.7 PlusLeader
LiveBench reasoning86.7%Not measuredOnly DeepSeek V4.1 Flash measured
MysteryMechanism (Vals AI)21.2%Not measuredOnly DeepSeek V4.1 Flash measured
GPQA Diamond (Artificial Analysis run)Not measured90.0%Only Qwen3.7 Plus measured
Humanity's Last Exam (Artificial Analysis run)39.2%35.6%DeepSeek V4.1 Flash
GPQA Diamond (Epoch AI run)89.8%87.9%DeepSeek V4.1 Flash
ARC-AGI94.5%Not measuredOnly DeepSeek V4.1 Flash measured
ARC-AGI-272.9%Not measuredOnly DeepSeek V4.1 Flash measured
Chess puzzles48.0%Not measuredOnly DeepSeek V4.1 Flash measured
Mystery game puzzles43.0%17.0%DeepSeek V4.1 Flash
LMArena Text: hard prompts14831460DeepSeek V4.1 Flash
LMArena Text: expert15011466DeepSeek V4.1 Flash
LMArena Text: hard prompts in English14881460DeepSeek V4.1 Flash
LMArena Vision: diagrams12971292DeepSeek V4.1 Flash
LMArena Vision: homework13071295DeepSeek V4.1 Flash
Neither model has a result on the other 8 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index40
Math benchmarks for DeepSeek V4.1 Flash and Qwen3.7 Plus
BenchmarkDeepSeek V4.1 FlashQwen3.7 PlusLeader
OTIS Mock AIME98.3%93.3%DeepSeek V4.1 Flash
FrontierMath, tiers 1 to 367.4%34.4%DeepSeek V4.1 Flash
FrontierMath, tier 426.8%Not measuredOnly DeepSeek V4.1 Flash measured
ProofBench54.0%Not measuredOnly DeepSeek V4.1 Flash measured
LMArena Text: math14781467DeepSeek V4.1 Flash
LMArena Text: mathematical work14851470DeepSeek V4.1 Flash
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index31
Knowledge benchmarks for DeepSeek V4.1 Flash and Qwen3.7 Plus
BenchmarkDeepSeek V4.1 FlashQwen3.7 PlusLeader
LegalBench (Vals AI)83.3%Not measuredOnly DeepSeek V4.1 Flash measured
MortgageTax (Vals AI)Not measured66.2%Only Qwen3.7 Plus measured
MedCode (Vals AI)41.2%Not measuredOnly DeepSeek V4.1 Flash measured
SimpleQA Verified42.9%Not measuredOnly DeepSeek V4.1 Flash measured
LMArena Text: science14691464DeepSeek V4.1 Flash
LMArena Text: medicine and healthcare14841464DeepSeek V4.1 Flash
LMArena Text: legal and government14431451Qwen3.7 Plus
LMArena Text: business and finance14611435DeepSeek V4.1 Flash
Neither model has a result on the other 10 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index80
Web design benchmarks for DeepSeek V4.1 Flash and Qwen3.7 Plus
BenchmarkDeepSeek V4.1 FlashQwen3.7 PlusLeader
Design Arena: websites13091269DeepSeek V4.1 Flash
Design Arena: UI components13151261DeepSeek V4.1 Flash
Design Arena: game dev13301262DeepSeek V4.1 Flash
Design Arena: data viz12901276DeepSeek V4.1 Flash
Design Arena: 3D13561239DeepSeek V4.1 Flash
Design Arena: all code categories13201269DeepSeek V4.1 Flash
Design Arena: SVG12441208DeepSeek V4.1 Flash
Design Arena: ASCII art12651143DeepSeek V4.1 Flash
LiveBench design79.2%Not measuredOnly DeepSeek V4.1 Flash measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index198
General benchmarks for DeepSeek V4.1 Flash and Qwen3.7 Plus
BenchmarkDeepSeek V4.1 FlashQwen3.7 PlusLeader
LiveBench data analysis79.3%Not measuredOnly DeepSeek V4.1 Flash measured
Public Benefits Bench (Vals AI)64.3%Not measuredOnly DeepSeek V4.1 Flash measured
SAGE (Vals AI)47.9%39.3%DeepSeek V4.1 Flash
MedScribe (Vals AI)85.5%Not measuredOnly DeepSeek V4.1 Flash measured
Vals Multimodal IndexNot measured53.9%Only Qwen3.7 Plus measured
IFBenchNot measured78.0%Only Qwen3.7 Plus measured
Long context reasoning (AA-LCR)84.0%73.0%DeepSeek V4.1 Flash
DTBench89.9%84.0%DeepSeek V4.1 Flash
LMCA47.0%37.6%DeepSeek V4.1 Flash
Surface Evolver Bench46.3%Not measuredOnly DeepSeek V4.1 Flash measured
Furniture assembly34.2%Not measuredOnly DeepSeek V4.1 Flash measured
LMArena Text14641454DeepSeek V4.1 Flash
LMArena Text: instruction following14731439DeepSeek V4.1 Flash
LMArena Text: creative writing14371438Qwen3.7 Plus
LMArena Vision12781278Qwen3.7 Plus
LMArena Text: English14731458DeepSeek V4.1 Flash
LMArena Text: non-English14491445DeepSeek V4.1 Flash
LMArena Text: Chinese15011509Qwen3.7 Plus
LMArena Text: German14701471Qwen3.7 Plus
LMArena Text: Japanese14321412DeepSeek V4.1 Flash
LMArena Text: Korean14361413DeepSeek V4.1 Flash
LMArena Text: French14651472Qwen3.7 Plus
LMArena Text: Spanish14591457DeepSeek V4.1 Flash
LMArena Text: Russian14671457DeepSeek V4.1 Flash
LMArena Text: Polish14571449DeepSeek V4.1 Flash
LMArena Text: multi-turn14611459DeepSeek V4.1 Flash
LMArena Text: longer queries14731454DeepSeek V4.1 Flash
LMArena Text: writing and language14501437DeepSeek V4.1 Flash
LMArena Text: entertainment and media14451422DeepSeek V4.1 Flash
LMArena Vision: English12881280DeepSeek V4.1 Flash
LMArena Vision: Chinese13271332Qwen3.7 Plus
LMArena Vision: reading text12821288Qwen3.7 Plus
LMArena Vision: humor12601261Qwen3.7 Plus
LMArena Vision: creative writing12751258DeepSeek V4.1 Flash
LMArena DocumentNot measured1444Only Qwen3.7 Plus measured
Neither model has a result on the other 11 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for DeepSeek V4.1 Flash and Qwen3.7 Plus
BenchmarkDeepSeek V4.1 FlashQwen3.7 PlusLeader
Neither model has a result on 5 boards here

What each workload costs

Three fixed token mixes at each model's listed price, so per-token rates become a bill.

Chat turn

1K input + 500 output tokens

DeepSeek V4.1 Flash$0.0006Fits in one request
Qwen3.7 Plus$0.0010Fits in one request

DeepSeek V4.1 Flash costs less

Repository review

50K input + 3K output tokens

DeepSeek V4.1 Flash$0.013Fits in one request
Qwen3.7 Plus$0.020Fits in one request

DeepSeek V4.1 Flash costs less

Agent loop

200K input + 10K output tokens

DeepSeek V4.1 Flash$0.050Fits in one request
Qwen3.7 Plus$0.077Fits in one request

DeepSeek V4.1 Flash costs less

Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.

Specification differences

The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.

Specifications of DeepSeek V4.1 Flash and Qwen3.7 Plus
SpecificationDeepSeek V4.1 FlashQwen3.7 Plus
MakerDeepSeekQwen
WeightsOpen weightsNo public weights listed
ReleasedSeptember 10, 2026June 3, 2026
Context window1.05M1M
Input $/Mtok$0.21$0.32
Output $/Mtok$0.78$1.28
Coding index62.533.2
Independent measurements behind it52
Cost per solved taskNot computableNot computable
SourceOpenRouter listingOpenRouter listing

Questions

Is DeepSeek V4.1 Flash better than Qwen3.7 Plus for coding?

Pick DeepSeek V4.1 Flash for coding: it scores 62.5 on the Vibe Coding Index against 33.2 for Qwen3.7 Plus. Pick Qwen3.7 Plus for work measured by AA Intelligence Index or LMArena Text: legal and government, where it leads.

Which is cheaper, DeepSeek V4.1 Flash or Qwen3.7 Plus?

DeepSeek V4.1 Flash costs $0.21 per million input tokens and $0.78 per million output tokens; Qwen3.7 Plus costs $0.32 and $1.28. Cost per solved task is known for neither of them.

Which has the bigger context window, DeepSeek V4.1 Flash or Qwen3.7 Plus?

DeepSeek V4.1 Flash, with 1.05M tokens against 1M.

How many benchmarks is the DeepSeek V4.1 Flash vs Qwen3.7 Plus comparison based on?

65 benchmarks have a result for both models as of October 21, 2026. DeepSeek V4.1 Flash's coding index rests on 5 independent benchmarks and Qwen3.7 Plus's on 2. Where only one model has a result, the page says so instead of naming a winner.

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