Why is this comparison indexable?

It has 6 verifiable comparison points, and both models have pricing or benchmark data.

Are missing metrics invented?

No. Metrics without LMSpeed data are omitted from this report.

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LMSpeed

Back to models

Data points: 164

Model compare

DeepSeek V4 Flash vs Qwen3.6 Plus

The readout for DeepSeek V4 Flash and Qwen3.6 Plus, before the detailed comparison sheet.

Model A

DeepSeek V4 Flash

DeepSeek

Contender

vs

Model B

Qwen3.6 Plus

Qwen

Leading

Key Takeaways

Weighted outcome: Qwen3.6 Plus. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.

Decision read

Qwen3.6 Plus

Qwen3.6 Plus has the higher weighted result; Model A / B score 20 to 80.

Evidence depth

164 data points

Includes 37 benchmark rows, 5 audit samples, and 10 provider examples.

Selection signal

Start with Qwen3.6 Plus

The charts below split 52 high-signal samples across speed, scores, and audit health.

Change comparison

Switch either side of this report to compare another model with the same LMSpeed data pipeline.

Model AModel B

Comparison sheet

This report only uses LMSpeed data for DeepSeek V4 Flash and Qwen3.6 Plus: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.

Model compare	DeepSeek V4 Flash	Qwen3.6 Plus
Overall leader	Contender	Leading
Weighted overall score	20.0 pts	80.0 pts
Benchmark category leads	0 categories	6 categories
Operational advantages	Cheapest input price, Average speed, First-token latency, Free providers, Provider coverage	No data
Context window	1.0M tokens	1M tokens
Max output	65.5K tokens	65.5K tokens
Modalities	Input Text Output Text	Input TextImage

The overall result weights benchmark capability categories at 80% and price, API speed/latency, and availability at 20%. Recent test volume does not affect the winner, and missing benchmark categories are excluded.

Model metadata

Model compare	DeepSeek V4 Flash	Qwen3.6 Plus
Developer	DeepSeek	Qwen
Released	Apr 2026	Apr 2026
Parameters	No data	No data
Tokenizer	DeepSeek	Qwen3
Knowledge cutoff	No data	No data
OpenRouter ID	deepseek/deepseek-v4-flash	qwen/qwen3.6-plus
References	No data	No data

When to choose each model

This report only uses LMSpeed data for DeepSeek V4 Flash and Qwen3.6 Plus: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.

DeepSeek V4 Flash

DeepSeek V4 Flash has these operational advantages: Cheapest input price, Average speed, First-token latency, Free providers, Provider coverage.

Qwen3.6 Plus

Qwen3.6 Plus leads these benchmark categories: Agents, Coding, Reasoning, Knowledge, Math.

Benchmark score comparison

Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.

Category performance

Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.

Model A coverage: 6 / 8
Model B coverage: 8 / 8
Shared: 6 shared categories

Avg. score

DeepSeek V4 Flash

47.6

Avg. score

Qwen3.6 Plus

53.5

Agents

Qwen3.6 Plus leads by 1.5

DeepSeek V4 Flash49.4

Qwen3.6 Plus50.9

Coding

Qwen3.6 Plus leads by 8.0

DeepSeek V4 Flash46.2

Qwen3.6 Plus54.2

Reasoning

Qwen3.6 Plus leads by 5.6

DeepSeek V4 Flash52.6

Qwen3.6 Plus58.2

Knowledge

Qwen3.6 Plus leads by 5.9

DeepSeek V4 Flash46.1

Qwen3.6 Plus52

Math

Qwen3.6 Plus leads by 15.8

DeepSeek V4 Flash36.8

Qwen3.6 Plus52.6

Multilingual

Qwen3.6 Plus

DeepSeek V4 Flash-

Qwen3.6 Plus52.4

Multimodal

Qwen3.6 Plus

DeepSeek V4 Flash-

Qwen3.6 Plus52

Instruction following

Qwen3.6 Plus leads by 1.7

DeepSeek V4 Flash54.3

Qwen3.6 Plus56

Professional benchmark details

Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.

Group

Aggregatereported

BenchLM overall score

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

72.0

Rank #29/127 · confidence 2 · eval date 2026-04-24

+8.0

Qwen3.6 Plus

64.0

Rank #43/127 · confidence 4 · eval date 2026-04-02

Pricingverified

Output price

SourceDeepSeek V4 Flash (Reasoning, High Effort)

DeepSeek V4 Flash

winner

$0.280/M

Rank #6/163 · confidence 4

+$2.72/M

Qwen3.6 Plus

$3.00/M

Rank #86/163 · confidence 4

Pricingverified

Blended price

SourceDeepSeek V4 Flash (Reasoning, High Effort)

DeepSeek V4 Flash

winner

$0.175/M

Rank #12/163 · confidence 4

+$0.950/M

Qwen3.6 Plus

$1.13/M

Rank #82/163 · confidence 4

Pricingverified

Input price

SourceDeepSeek V4 Flash (Reasoning, High Effort)

DeepSeek V4 Flash

winner

$0.140/M

Rank #18/163 · confidence 4

+$0.360/M

Qwen3.6 Plus

$0.500/M

Rank #70/163 · confidence 4

Reasoningreported

MMLU-Pro

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

86.2%

Rank #15/125 · confidence 2 · eval date 2026-04-24

+2.3%

Qwen3.6 Plus

winner

88.5%

Rank #5/125 · confidence 4 · eval date 2026-04-02

Reasoningreported

AA-LCR

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

63.0

Rank #53/89 · confidence 2 · eval date 2026-04-24

+6.7

Qwen3.6 Plus

winner

69.7

Rank #19/89 · confidence 4 · eval date 2026-04-02

Reasoningreported

CritPt

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

7.1

Rank #29/73 · confidence 2 · eval date 2026-04-24

+4.2

Qwen3.6 Plus

2.9

Rank #42/73 · confidence 4 · eval date 2026-04-02

Reasoningverified

GPQA

SourceDeepSeek V4 Flash (Reasoning, High Effort)

DeepSeek V4 Flash

86.7%

Rank #35/187 · confidence 4

+1.5%

Qwen3.6 Plus

winner

88.2%

Rank #29/187 · confidence 4

Reasoningverified

HLE

SourceDeepSeek V4 Flash (Reasoning, High Effort)

DeepSeek V4 Flash

winner

27.8%

Rank #35/186 · confidence 4

+2.1%

Qwen3.6 Plus

25.7%

Rank #41/186 · confidence 4

Codingreported

SWE Multilingual

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

73.3

Rank #11/17 · confidence 2 · eval date 2026-04-24

+0.5

Qwen3.6 Plus

winner

73.8

Rank #10/17 · confidence 4 · eval date 2026-04-02

Codingreported

SWE-bench Verified

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

79.0

Rank #14/43 · confidence 2 · eval date 2026-04-24

+0.2

Qwen3.6 Plus

78.8

Rank #15/43 · confidence 4 · eval date 2026-04-02

Codingreported

BenchLM Coding score

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

79.9

Rank #18/100 · confidence 2 · eval date 2026-04-24

+7.2

Qwen3.6 Plus

72.7

Rank #36/100 · confidence 4 · eval date 2026-04-02

Codingreported

SWE-bench Pro

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

52.6

Rank #31/37 · confidence 2 · eval date 2026-04-24

+4.0

Qwen3.6 Plus

winner

56.6

Rank #21/37 · confidence 4 · eval date 2026-04-02

Codingreported

Terminal-Bench Hard

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

35.6

Rank #38/85 · confidence 2 · eval date 2026-04-24

+8.3

Qwen3.6 Plus

winner

43.9

Rank #21/85 · confidence 4 · eval date 2026-04-02

Codingreported

AA Coding Index

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

56.2

Rank #22/58 · confidence 2 · eval date 2026-04-24

+1.6

Qwen3.6 Plus

54.5

Rank #27/58 · confidence 4 · eval date 2026-04-02

Codingreported

AA-SciCode

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

44.9

Rank #41/96 · confidence 2 · eval date 2026-04-24

+4.2

Qwen3.6 Plus

40.7

Rank #53/96 · confidence 4 · eval date 2026-04-02

Codingverified

SciCode

SourceDeepSeek V4 Flash (Reasoning, High Effort)

DeepSeek V4 Flash

winner

42.0%

Rank #51/184 · confidence 4

+1.3%

Qwen3.6 Plus

40.7%

Rank #60/184 · confidence 4

Mathreported

HMMT Feb 2026

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

94.8

Rank #3/14 · confidence 2 · eval date 2026-04-24

+7.0

Qwen3.6 Plus

87.8

Rank #8/14 · confidence 4 · eval date 2026-04-02

Mathreported

BenchLM Math score

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

81.3

Rank #7/59 · confidence 2 · eval date 2026-04-24

+18.4

Qwen3.6 Plus

62.9

Rank #23/59 · confidence 4 · eval date 2026-04-02

Knowledgereported

AA-Omniscience Hallucination Rate

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

95.8

Rank #1/90 · confidence 2 · eval date 2026-04-24

+63.8

Qwen3.6 Plus

32.0

Rank #81/90 · confidence 4 · eval date 2026-04-02

Knowledgereported

Artificial Analysis Intelligence Index

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

40.3

Rank #26/99 · confidence 2 · eval date 2026-04-24

+0.7

Qwen3.6 Plus

39.6

Rank #32/99 · confidence 4 · eval date 2026-04-02

Knowledgereported

AA-GPQA Diamond

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

89.4

Rank #27/96 · confidence 2 · eval date 2026-04-24

+1.2

Qwen3.6 Plus

88.2

Rank #32/96 · confidence 4 · eval date 2026-04-02

Knowledgereported

AA-HLE

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

32.1

Rank #27/96 · confidence 2 · eval date 2026-04-24

+6.4

Qwen3.6 Plus

25.7

Rank #42/96 · confidence 4 · eval date 2026-04-02

Knowledgereported

AA-Omniscience Accuracy

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

37.2

Rank #33/90 · confidence 2 · eval date 2026-04-24

+11.0

Qwen3.6 Plus

26.2

Rank #52/90 · confidence 4 · eval date 2026-04-02

Knowledgereported

BenchLM Knowledge score

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

65.4

Rank #41/92 · confidence 2 · eval date 2026-04-24

+2.2

Qwen3.6 Plus

winner

67.6

Rank #38/92 · confidence 4 · eval date 2026-04-02

Multimodalreported

Design Arena Website

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

1242.0

Rank #32/65 · confidence 2 · eval date 2026-04-24

+12.0

Qwen3.6 Plus

winner

1254.0

Rank #30/65 · confidence 4 · eval date 2026-04-02

Instruction followingreported

AA-IFBench

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

79.2

Rank #5/86 · confidence 2 · eval date 2026-04-24

+4.0

Qwen3.6 Plus

75.2

Rank #23/86 · confidence 4 · eval date 2026-04-02

Agentsreported

Tau2-Telecom

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

95.0

Rank #19/84 · confidence 2 · eval date 2026-04-24

+2.7

Qwen3.6 Plus

winner

97.7

Rank #7/84 · confidence 4 · eval date 2026-04-02

Agentsreported

Toolathlon

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

47.8

Rank #12/21 · confidence 2 · eval date 2026-04-24

+8.0

Qwen3.6 Plus

39.8

Rank #16/21 · confidence 4 · eval date 2026-04-02

Agentsreported

MCP Atlas

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

69.0

Rank #13/22 · confidence 2 · eval date 2026-04-24

+20.8

Qwen3.6 Plus

48.2

Rank #18/22 · confidence 4 · eval date 2026-04-02

Agentsreported

AA Agentic Index

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

31.1

Rank #15/54 · confidence 2 · eval date 2026-04-24

+3.5

Qwen3.6 Plus

27.6

Rank #25/54 · confidence 4 · eval date 2026-04-02

Agentsreported

Claw-Eval

SourceDeepSeek V4 Flash

DeepSeek V4 Flash

57.8

Rank #17/28 · confidence 2 · eval date 2026-04-24

+1.0

Qwen3.6 Plus

winner

58.8

Rank #16/28 · confidence 4 · eval date 2026-04-02

Agentsreported

Gert Labs

SourceDeepSeek V4 Flash

DeepSeek V4 Flash

winner

54.4

Rank #18/50 · confidence 2 · eval date 2026-04-24

+3.8

Qwen3.6 Plus

50.6

Rank #22/50 · confidence 4 · eval date 2026-04-02

Agentsreported

GDPval-AA

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

1189.0

Rank #22/54 · confidence 2 · eval date 2026-04-24

+54.0

Qwen3.6 Plus

1135.0

Rank #28/54 · confidence 4 · eval date 2026-04-02

Agentsreported

GDPval-AA

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

34.4

Rank #22/50 · confidence 2 · eval date 2026-04-24

+2.6

Qwen3.6 Plus

31.8

Rank #28/50 · confidence 4 · eval date 2026-04-02

Agentsreported

Terminal-Bench 2.0

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

56.9

Rank #31/45 · confidence 2 · eval date 2026-04-24

+4.7

Qwen3.6 Plus

winner

61.6

Rank #24/45 · confidence 4 · eval date 2026-04-02

Agentsreported

BenchLM Agentic score

SourceDeepSeek V4 Flash (Max)

DeepSeek V4 Flash

winner

65.8

Rank #36/95 · confidence 2 · eval date 2026-04-24

+6.5

Qwen3.6 Plus

59.3

Rank #42/95 · confidence 4 · eval date 2026-04-02

API audit comparison

Latest completed audits from shared providers, with four safety and integrity score groups plus report links.

Provider	DeepSeek V4 Flash	Qwen3.6 Plus
Winner: DeepSeek V4 Flash	DeepSeek V4 Flash deepseek-v4-flash Audit score 93 1008486100	Qwen3.6 Plus qwen3.6-plus No audit yet
Winner: DeepSeek V4 Flash	DeepSeek V4 Flash deepseek-v4-flash Audit score 92 10068100100	Qwen3.6 Plus qwen3.6-plus No audit yet
Winner: DeepSeek V4 Flash	DeepSeek V4 Flash deepseek-v4-flash Audit score 92 1008484100	Qwen3.6 Plus qwen3.6-plus No audit yet
Winner: DeepSeek V4 Flash	DeepSeek V4 Flash deepseek-v4-flash Audit score 85 846886100	Qwen3.6 Plus qwen3.6-plus No audit yet
Winner: DeepSeek V4 Flash	DeepSeek V4 Flash deepseek-v4-flash Audit score 84 787584100	Qwen3.6 Plus qwen3.6-plus No audit yet

Provider examples

Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.

Provider	DeepSeek V4 Flash	Qwen3.6 Plus
55 tests	DeepSeek V4 Flash speed / latency 56 tok/s / 30229ms input / output No data	Qwen3.6 Plus speed / latency N/A / N/A input / output No data
45 tests	DeepSeek V4 Flash speed / latency 108 tok/s / 3324ms input / output No data	Qwen3.6 Plus speed / latency 48 tok/s / 26045ms input / output No data
35 tests	DeepSeek V4 Flash speed / latency N/A / N/A input / output No data	Qwen3.6 Plus speed / latency 43 tok/s / 26975ms input / output No data
25 tests	DeepSeek V4 Flash speed / latency 73 tok/s / 2520ms input / output No data	Qwen3.6 Plus speed / latency 55 tok/s / 23503ms input / output No data
20 tests	DeepSeek V4 Flash speed / latency 83 tok/s / 5114ms input / output No data	Qwen3.6 Plus speed / latency N/A / N/A input / output No data
	DeepSeek V4 Flash deepseek-v4-flash-free speed / latency No data input / output $0/request	Qwen3.6 Plus qwen3.6-plus speed / latency No data input / output $0.876/M
	DeepSeek V4 Flash deepseek-v4-flash speed / latency No data input / output $0/M/$0/M	Qwen3.6 Plus qwen3.6-plus speed / latency No data input / output $0.034/M
	DeepSeek V4 Flash deepseek-v4-flash speed / latency No data input / output $0.0012/request	Qwen3.6 Plus qwen3.6-plus speed / latency No data input / output $0.110/M
	DeepSeek V4 Flash deepseek-v4-flash speed / latency No data input / output $0.0014/M/$0.0027/M	Qwen3.6 Plus qwen3.6-plus speed / latency No data input / output $0.274/M
	DeepSeek V4 Flash deepseek-ai/DeepSeek-V4-Flash speed / latency No data input / output $0.0027/request	Qwen3.6 Plus qwen3.6-plus speed / latency No data input / output $0.0014/request

FAQ

Weighted outcome: Qwen3.6 Plus. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.

Why is this comparison indexable?: It has 6 verifiable comparison points, and both models have pricing or benchmark data.
Are missing metrics invented?: No. Metrics without LMSpeed data are omitted from this report.

video

Output

Text

Features	Text inputText outputTool callingStructured outputsJSON modeReasoning	Text inputImage inputText outputTool callingStructured outputsJSON modeReasoning