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Qwen3.5-Flash

  • Qwen
  • Released February 25, 2026
  • No public weights listed
  • 1M context

Qwen3.5-Flash costs $0.065 per million input tokens and $0.26 per million output tokens, and it scores 6.2 on the Vibe Coding Index from 1 benchmark, as of October 20, 2026.

Its output price ranks 54 of 349 priced models, counting from the cheapest.

  • Coding index 6.2 Thin, 1 benchmark
  • Cost per solved task $0.40 One SWE-bench Verified task, solved
  • Output, per million tokens $0.26 54 of 349 from the cheapest
  • Input, per million tokens $0.065 OpenRouter list price
  • Context window 1M Tokens per request

About and specs

The Qwen3.5 native vision-language Flash models are built on a hybrid architecture that integrates a linear attention mechanism with a sparse mixture-of-experts model, achieving higher inference efficiency. Compared to the...

API model id qwen/qwen3.5-flash-02-23
  • Tool callingListed
  • Structured outputsListed
  • JSON modeListed
  • Reasoning modeListed
  • Web searchNot listed
Takes in
Text, Images, Video
Gives back
Text
Context window
1M tokens
Max output
66K tokens
Knowledge cutoff
Not published
Cached input $/Mtok
No cache price listed
Cache write $/Mtok
No cache write price listed
Reasoning $/Mtok
Not priced apart
Web search, per request
No search price listed
Tokenizer
Qwen3
Requests moderated
No
Withdrawn on
No date announced
Parameters
Not published
Downloads, all time
No public weights
Training compute
No estimate published
Output speed
Not measured
Time to first token
Not measured
Speed on OpenRouter
91 tokens/s via Alibaba, 30-minute median
First token on OpenRouter
0.6 s via Alibaba, 30-minute median

Benchmarks: 55 of 190 measured

The tick on a coding bar is the median of every model measured on it. Outside coding, the place is this model's rank on that board. A board that never ran the model says so.

Where it stands

Full leaderboard
Not ranked overall: Artificial Analysis has not scored it

Measured in 4 of 6 categories. A place counts only the models measured on that board.

Coding index

6.2
  • Aider polyglot Not measured
  • SWE-bench Verified Not measured
  • LiveBench coding Not measured
  • LMArena WebDev Elo, scaled from 1200 to 1900 1244 Elo 6 of 100

The index averages only the coding benchmarks that have a result; the others are skipped, never filled in. How it is weighted

Other public boards

All rankings

Best placings

  1. AIME#17 of 54
  2. MortgageTax (Vals AI)#22 of 68
  3. LegalBench (Vals AI)#32 of 95
  4. CorpFin (Vals AI)#38 of 86

Lowest placings

  1. LMArena WebDev: React#91 of 92
  2. LMArena WebDev: HTML#93 of 100
  3. FrontierMath, tiers 1 to 3#73 of 79

Coding7 of 34 boards

1 more coding boards

Not measured on SWE-bench Lite, SWE-bench (full test set), SWE-bench Multimodal, SWE-bench Multilingual, AA Coding Index, Terminal-Bench 4 (Vals AI), Vibe Code Bench (Vals AI), Code migration (Vals AI), ProgramBench (Vals AI), IOI (Vals AI), Terminal-Bench 2.1 (Vals AI), SWE-bench Multimodal (Vals AI), Vibe Code Bench 1-100 (Vals AI), SkillsBench (Vals AI), CyberBench (Vals AI), LiveCodeBench (Artificial Analysis run), SciCode, Terminal-Bench Hard (Artificial Analysis run), Terminal-Bench, DeepSWE, FrontierCode, FrontierSWE, GSO-Bench, WeirdML, MirrorCode, Cybench, LMArena WebDev: from an image

Intelligence1 of 2 boards

Not measured on AA Intelligence Index

Agentic work0 of 39 boards

Not measured on AA Agentic Index, Design Arena: agents building web apps, Design Arena: agents building full-stack apps, Design Arena: agents building mobile apps, Design Arena: agents building Android apps, Design Arena: agents building Godot games, Design Arena: agents building games, Design Arena: HTML slides, Design Arena: PowerPoint slides, Design Arena: spreadsheets, LiveBench research, LiveBench browser, LiveBench long agentic, SREBench (Vals AI), Finance Agent (Vals AI), Tax Agent Bench (Vals AI), Legal Research Bench (Vals AI), Harvey's Legal Agent Benchmark (Vals AI), Excel Modeling Benchmark (Vals AI), BioMysteryBench (Vals AI), Terminal-Bench-Science (Vals AI), Vals Science Index, Time Horizon Index (Vals AI), CUA-bench (Vals AI), Robo-bench (Vals AI), τ²-Bench Telecom, APEX-Agents, METR time horizons, Remote Labor Index, GDPval, OSWorld 2.0, BALROG, DeepResearch Bench, PostTrainBench, TheAgentCompany, OSWorld, SpireClimb, Vending-Bench 2, LMArena Search

Reasoning8 of 21 boards

2 more reasoning boards

Not measured on LiveBench reasoning, MysteryMechanism (Vals AI), GPQA Diamond (Artificial Analysis run), Humanity's Last Exam (Artificial Analysis run), ARC-AGI, ARC-AGI-2, Humanity's Last Exam, SimpleBench, EBR-bench, VPCT, BIG-Bench Hard, LMArena Vision: diagrams, LMArena Vision: homework

Math5 of 13 boards

Not measured on MATH 500 (Vals AI), MGSM (Vals AI), AA Math Index, AIME 2025 (Artificial Analysis run), FrontierMath, tier 4, ProofBench, MATH level 5, GSM8K

Knowledge12 of 17 boards

6 more knowledge boards

Not measured on MedQA (Vals AI), MMLU Pro (Artificial Analysis run), MMLU, GeoBench, AI2 Reasoning Challenge

Web design0 of 9 boards

Not measured on Design Arena: websites, Design Arena: UI components, Design Arena: game dev, Design Arena: data viz, Design Arena: 3D, Design Arena: all code categories, Design Arena: SVG, Design Arena: ASCII art, LiveBench design

General21 of 46 boards

15 more general boards

Not measured on Vals Index, LiveBench data analysis, Public Benefits Bench (Vals AI), Vals Multimodal Index, IFBench, Long context reasoning (AA-LCR), Fiction.LiveBench, Creative writing (Lech Mazur), CL-bench, Surface Evolver Bench, Furniture assembly, ExploitBench, HellaSwag, WinoGrande, PIQA, CL-bench Life, LMArena Vision, LMArena Vision: English, LMArena Vision: Chinese, LMArena Vision: reading text, LMArena Vision: humor, LMArena Vision: captioning, LMArena Vision: recognizing things, LMArena Vision: creative writing, LMArena Document

Image generation0 of 5 boards

Not measured on Design Arena: images, Design Arena: graphic design, Design Arena: logos, LMArena Text to Image, LMArena Image Edit

Public boards shown as published (Vals AI, Artificial Analysis, Design Arena) and kept out of the coding index. Each links to its source on the benchmark page.

All 190 benchmarks as a table
Benchmark results for Qwen3.5-Flash
BenchmarkResultIndex weight
Aider polyglotCoding Not measured 35%
SWE-bench VerifiedCoding Not measured 30%
SWE-bench LiteCoding Not measured Not in index
SWE-bench (full test set)Coding Not measured Not in index
SWE-bench MultimodalCoding Not measured Not in index
SWE-bench MultilingualCoding Not measured Not in index
LiveBench codingCoding Not measured 20%
LMArena WebDevCoding 1244 15%
Vals IndexGeneral Not measured Not in index
GPQA DiamondReasoning 82.8% Not in index
AIMEMath 92.5% Not in index
MMLU ProKnowledge 84.1% Not in index
AA Intelligence IndexIntelligence Not measured Not in index
AA Coding IndexCoding Not measured Not in index
AA Agentic IndexAgentic work Not measured Not in index
Design Arena: websitesWeb design Not measured Not in index
Design Arena: UI componentsWeb design Not measured Not in index
Design Arena: game devWeb design Not measured Not in index
Design Arena: data vizWeb design Not measured Not in index
Design Arena: 3DWeb design Not measured Not in index
Design Arena: all code categoriesWeb design Not measured Not in index
Design Arena: SVGWeb design Not measured Not in index
Design Arena: ASCII artWeb design Not measured Not in index
Design Arena: agents building web appsAgentic work Not measured Not in index
Design Arena: agents building full-stack appsAgentic work Not measured Not in index
Design Arena: agents building mobile appsAgentic work Not measured Not in index
Design Arena: agents building Android appsAgentic work Not measured Not in index
Design Arena: agents building Godot gamesAgentic work Not measured Not in index
Design Arena: agents building gamesAgentic work Not measured Not in index
Design Arena: HTML slidesAgentic work Not measured Not in index
Design Arena: PowerPoint slidesAgentic work Not measured Not in index
Design Arena: spreadsheetsAgentic work Not measured Not in index
Design Arena: imagesImage generation Not measured Not in index
Design Arena: graphic designImage generation Not measured Not in index
Design Arena: logosImage generation Not measured Not in index
LiveBench reasoningReasoning Not measured Not in index
LiveBench data analysisGeneral Not measured Not in index
LiveBench researchAgentic work Not measured Not in index
LiveBench browserAgentic work Not measured Not in index
LiveBench long agenticAgentic work Not measured Not in index
LiveBench designWeb design Not measured Not in index
LiveCodeBench (Vals AI)Coding 83.3% Not in index
SWE-bench Verified (Vals AI)Coding 64.4% Not in index
Terminal-Bench 4 (Vals AI)Coding Not measured Not in index
Vibe Code Bench (Vals AI)Coding Not measured Not in index
Code migration (Vals AI)Coding Not measured Not in index
ProgramBench (Vals AI)Coding Not measured Not in index
SREBench (Vals AI)Agentic work Not measured Not in index
IOI (Vals AI)Coding Not measured Not in index
Terminal-Bench 2.1 (Vals AI)Coding Not measured Not in index
SWE-bench Multimodal (Vals AI)Coding Not measured Not in index
Vibe Code Bench 1-100 (Vals AI)Coding Not measured Not in index
SkillsBench (Vals AI)Coding Not measured Not in index
CyberBench (Vals AI)Coding Not measured Not in index
Finance Agent (Vals AI)Agentic work Not measured Not in index
Tax Agent Bench (Vals AI)Agentic work Not measured Not in index
Legal Research Bench (Vals AI)Agentic work Not measured Not in index
Harvey's Legal Agent Benchmark (Vals AI)Agentic work Not measured Not in index
Excel Modeling Benchmark (Vals AI)Agentic work Not measured Not in index
BioMysteryBench (Vals AI)Agentic work Not measured Not in index
Terminal-Bench-Science (Vals AI)Agentic work Not measured Not in index
Vals Science IndexAgentic work Not measured Not in index
Time Horizon Index (Vals AI)Agentic work Not measured Not in index
CUA-bench (Vals AI)Agentic work Not measured Not in index
Robo-bench (Vals AI)Agentic work Not measured Not in index
Public Benefits Bench (Vals AI)General Not measured Not in index
MysteryMechanism (Vals AI)Reasoning Not measured Not in index
MMMU Pro (Vals AI)Reasoning 81.9% Not in index
MATH 500 (Vals AI)Math Not measured Not in index
MGSM (Vals AI)Math Not measured Not in index
SAGE (Vals AI)General 42.5% Not in index
LegalBench (Vals AI)Knowledge 84.3% Not in index
CaseLaw (Vals AI)Knowledge 56.0% Not in index
CorpFin (Vals AI)Knowledge 63.6% Not in index
TaxEval (Vals AI)Knowledge 72.2% Not in index
MortgageTax (Vals AI)Knowledge 67.4% Not in index
MedQA (Vals AI)Knowledge Not measured Not in index
MedCode (Vals AI)Knowledge 33.0% Not in index
MedScribe (Vals AI)General 70.6% Not in index
Vals Multimodal IndexGeneral Not measured Not in index
AA Math IndexMath Not measured Not in index
GPQA Diamond (Artificial Analysis run)Reasoning Not measured Not in index
Humanity's Last Exam (Artificial Analysis run)Reasoning Not measured Not in index
MMLU Pro (Artificial Analysis run)Knowledge Not measured Not in index
LiveCodeBench (Artificial Analysis run)Coding Not measured Not in index
SciCodeCoding Not measured Not in index
Terminal-Bench Hard (Artificial Analysis run)Coding Not measured Not in index
IFBenchGeneral Not measured Not in index
Long context reasoning (AA-LCR)General Not measured Not in index
τ²-Bench TelecomAgentic work Not measured Not in index
AIME 2025 (Artificial Analysis run)Math Not measured Not in index
Terminal-BenchCoding Not measured Not in index
DeepSWECoding Not measured Not in index
FrontierCodeCoding Not measured Not in index
FrontierSWECoding Not measured Not in index
GSO-BenchCoding Not measured Not in index
WeirdMLCoding Not measured Not in index
MirrorCodeCoding Not measured Not in index
APEX-AgentsAgentic work Not measured Not in index
METR time horizonsAgentic work Not measured Not in index
Remote Labor IndexAgentic work Not measured Not in index
GDPvalAgentic work Not measured Not in index
OSWorld 2.0Agentic work Not measured Not in index
BALROGAgentic work Not measured Not in index
DeepResearch BenchAgentic work Not measured Not in index
PostTrainBenchAgentic work Not measured Not in index
GPQA Diamond (Epoch AI run)Reasoning 82.3% Not in index
ARC-AGIReasoning Not measured Not in index
ARC-AGI-2Reasoning Not measured Not in index
Humanity's Last ExamReasoning Not measured Not in index
SimpleBenchReasoning Not measured Not in index
Chess puzzlesReasoning 14.0% Not in index
Mystery game puzzlesReasoning 20.0% Not in index
EBR-benchReasoning Not measured Not in index
OTIS Mock AIMEMath 84.4% Not in index
FrontierMath, tiers 1 to 3Math 18.2% Not in index
FrontierMath, tier 4Math Not measured Not in index
ProofBenchMath Not measured Not in index
MATH level 5Math Not measured Not in index
GSM8KMath Not measured Not in index
SimpleQA VerifiedKnowledge 20.3% Not in index
MMLUKnowledge Not measured Not in index
GeoBenchKnowledge Not measured Not in index
DTBenchGeneral 82.9% Not in index
LMCAGeneral 29.1% Not in index
Fiction.LiveBenchGeneral Not measured Not in index
Creative writing (Lech Mazur)General Not measured Not in index
CL-benchGeneral Not measured Not in index
Surface Evolver BenchGeneral Not measured Not in index
Furniture assemblyGeneral Not measured Not in index
ExploitBenchGeneral Not measured Not in index
CybenchCoding Not measured Not in index
TheAgentCompanyAgentic work Not measured Not in index
OSWorldAgentic work Not measured Not in index
SpireClimbAgentic work Not measured Not in index
VPCTReasoning Not measured Not in index
BIG-Bench HardReasoning Not measured Not in index
AI2 Reasoning ChallengeKnowledge Not measured Not in index
HellaSwagGeneral Not measured Not in index
WinoGrandeGeneral Not measured Not in index
PIQAGeneral Not measured Not in index
CL-bench LifeGeneral Not measured Not in index
ALE-BenchCoding 265.9 Not in index
Vending-Bench 2Agentic work Not measured Not in index
Epoch Capabilities IndexIntelligence 143.8 Not in index
LMArena TextGeneral 1397 Not in index
LMArena Text: codingCoding 1412 Not in index
LMArena Text: hard promptsReasoning 1403 Not in index
LMArena Text: mathMath 1408 Not in index
LMArena Text: instruction followingGeneral 1375 Not in index
LMArena Text: creative writingGeneral 1343 Not in index
LMArena VisionGeneral Not measured Not in index
LMArena Text: EnglishGeneral 1404 Not in index
LMArena Text: non-EnglishGeneral 1385 Not in index
LMArena Text: ChineseGeneral 1446 Not in index
LMArena Text: GermanGeneral 1391 Not in index
LMArena Text: JapaneseGeneral 1368 Not in index
LMArena Text: KoreanGeneral 1344 Not in index
LMArena Text: FrenchGeneral 1412 Not in index
LMArena Text: SpanishGeneral 1400 Not in index
LMArena Text: RussianGeneral 1380 Not in index
LMArena Text: PolishGeneral 1376 Not in index
LMArena Text: multi-turnGeneral 1392 Not in index
LMArena Text: longer queriesGeneral 1392 Not in index
LMArena Text: expertReasoning 1407 Not in index
LMArena Text: hard prompts in EnglishReasoning 1409 Not in index
LMArena Text: software and ITCoding 1416 Not in index
LMArena Text: mathematical workMath 1413 Not in index
LMArena Text: scienceKnowledge 1416 Not in index
LMArena Text: medicine and healthcareKnowledge 1408 Not in index
LMArena Text: legal and governmentKnowledge 1397 Not in index
LMArena Text: business and financeKnowledge 1395 Not in index
LMArena Text: writing and languageGeneral 1369 Not in index
LMArena Text: entertainment and mediaGeneral 1347 Not in index
LMArena WebDev: ReactCoding 1229 Not in index
LMArena WebDev: HTMLCoding 1291 Not in index
LMArena WebDev: from an imageCoding Not measured Not in index
LMArena Vision: EnglishGeneral Not measured Not in index
LMArena Vision: ChineseGeneral Not measured Not in index
LMArena Vision: reading textGeneral Not measured Not in index
LMArena Vision: diagramsReasoning Not measured Not in index
LMArena Vision: homeworkReasoning Not measured Not in index
LMArena Vision: humorGeneral Not measured Not in index
LMArena Vision: captioningGeneral Not measured Not in index
LMArena Vision: recognizing thingsGeneral Not measured Not in index
LMArena Vision: creative writingGeneral Not measured Not in index
LMArena SearchAgentic work Not measured Not in index
LMArena DocumentGeneral Not measured Not in index
LMArena Text to ImageImage generation Not measured Not in index
LMArena Image EditImage generation Not measured Not in index

What it costs

A list price says what a token costs. The cost per solved task says what a working answer costs, which is the number that decides.

Output price against the market

Qwen3.5-Flash pricing
$0.0112Dashed line: median $1.80, log scale$600.00
$0.26 per million output tokens is cheaper than 86% of the 344 paid models in the catalog.

Cost per solved task

How it is computed
$0.26one attempt, Vals AI 64.4%tasks solved $0.40per solved task

What the boards say about its runs

Beside a result, many boards publish what the run cost, how long it took, the tokens it spent or the votes behind a rating. Each figure as its board printed it, one board per row.

What each board publishes about the runs behind Qwen: Qwen3.5-Flash's results
BoardResultWhat the run costAlso published
SWE-bench Verified (Vals AI) 64.4% $0.26 per test Duration, as printed 6m 03s
ALE-Bench 265.9 $0.0122 per problem Tokens per problem 32,977
LMArena WebDev 1244 Elo Not published Votes 1,328 · Interval (±) ±19.6
GPQA Diamond 82.8% Not published Latency, as printed 1m 20s
AIME 92.5% Not published Latency, as printed 4m 00s
MMLU Pro 84.1% Not published Latency, as printed 33 s
LiveCodeBench (Vals AI) 83.3% Not published Latency, as printed 3m 29s
MMMU Pro (Vals AI) 81.9% Not published Latency, as printed 46 s
SAGE (Vals AI) 42.5% Not published Latency, as printed 1m 25s
LegalBench (Vals AI) 84.3% Not published Latency, as printed 17 s
CaseLaw (Vals AI) 56.0% Not published Latency, as printed 44 s
CorpFin (Vals AI) 63.6% Not published Latency, as printed 35 s
34 more boards
What each board publishes about the runs behind Qwen: Qwen3.5-Flash's results, continued
TaxEval (Vals AI) 72.2% Not published Latency, as printed 1m 13s
MortgageTax (Vals AI) 67.4% Not published Latency, as printed 37 s
MedCode (Vals AI) 33.0% Not published Latency, as printed 1m 03s
MedScribe (Vals AI) 70.6% Not published Latency, as printed 1m 20s
LMArena Text 1397 Elo Not published Votes 61,802 · Interval (±) ±3.6
LMArena Text: coding 1412 Elo Not published Votes 17,719 · Interval (±) ±5.6
LMArena Text: hard prompts 1403 Elo Not published Votes 40,131 · Interval (±) ±4.4
LMArena Text: math 1408 Elo Not published Votes 3,386 · Interval (±) ±10.5
LMArena Text: instruction following 1375 Elo Not published Votes 20,300 · Interval (±) ±5.3
LMArena Text: creative writing 1343 Elo Not published Votes 9,752 · Interval (±) ±6.9
LMArena Text: English 1404 Elo Not published Votes 26,631 · Interval (±) ±4.9
LMArena Text: non-English 1385 Elo Not published Votes 35,171 · Interval (±) ±4.4
LMArena Text: Chinese 1446 Elo Not published Votes 3,673 · Interval (±) ±10.0
LMArena Text: German 1391 Elo Not published Votes 1,075 · Interval (±) ±18.8
LMArena Text: Japanese 1368 Elo Not published Votes 665 · Interval (±) ±23.9
LMArena Text: Korean 1344 Elo Not published Votes 1,075 · Interval (±) ±19.1
LMArena Text: French 1412 Elo Not published Votes 2,267 · Interval (±) ±14.1
LMArena Text: Spanish 1400 Elo Not published Votes 2,052 · Interval (±) ±14.1
LMArena Text: Russian 1380 Elo Not published Votes 7,223 · Interval (±) ±7.5
LMArena Text: Polish 1376 Elo Not published Votes 1,286 · Interval (±) ±16.4
LMArena Text: multi-turn 1392 Elo Not published Votes 10,982 · Interval (±) ±6.6
LMArena Text: longer queries 1392 Elo Not published Votes 25,685 · Interval (±) ±5.2
LMArena Text: expert 1407 Elo Not published Votes 5,839 · Interval (±) ±8.3
LMArena Text: hard prompts in English 1409 Elo Not published Votes 18,209 · Interval (±) ±5.6
LMArena Text: software and IT 1416 Elo Not published Votes 25,042 · Interval (±) ±5.0
LMArena Text: mathematical work 1413 Elo Not published Votes 3,358 · Interval (±) ±10.8
LMArena Text: science 1416 Elo Not published Votes 9,839 · Interval (±) ±6.7
LMArena Text: medicine and healthcare 1408 Elo Not published Votes 4,388 · Interval (±) ±9.5
LMArena Text: legal and government 1397 Elo Not published Votes 4,813 · Interval (±) ±9.1
LMArena Text: business and finance 1395 Elo Not published Votes 12,205 · Interval (±) ±6.3
LMArena Text: writing and language 1369 Elo Not published Votes 14,664 · Interval (±) ±5.9
LMArena Text: entertainment and media 1347 Elo Not published Votes 12,642 · Interval (±) ±6.3
LMArena WebDev: React 1229 Elo Not published Votes 1,204 · Interval (±) ±20.7
LMArena WebDev: HTML 1291 Elo Not published Votes 124 · Interval (±) ±59.0

On these lists

Compare with models of a similar score

All 135 comparisons for Qwen3.5-Flash