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Kimi K2.6 vs Qwen3.5-Flash

Kimi K2.6 leads Qwen3.5-Flash on coding, 52.1 to 41.1 on the Vibe Coding Index, and Qwen3.5-Flash costs 15.4x less per output token ($0.26 vs $4.00 per million). Updated October 22, 2026; 54 benchmarks have a result for both.

Replace Kimi K2.6 Replace Qwen3.5-Flash
Kimi K2.6Moonshot AI
Coding
52.1
Overall
60.5
Output $/M
$4.00
52
Qwen3.5-FlashQwen
Coding
41.1
Overall
50.1
Output $/M
$0.26
2
vs boards won of 54 shared

Kimi K2.6 or Qwen3.5-Flash: which to pick

Pick Kimi K2.6 for coding: it scores 52.1 on the Vibe Coding Index against 41.1 for Qwen3.5-Flash.

Pick Qwen3.5-Flash for output tokens 15.4x cheaper ($0.26 vs $4.00 per million) and a larger context window (1M against 262K tokens).

Model AKimi K2.6Moonshot AI52.1/1003 independent benchmarks$0.35 per solved taskModel BQwen3.5-FlashQwen41.1/1002 independent benchmarks$0.40 per solved task
Shared results
54
Kimi K2.6 only
55
Qwen3.5-Flash only
1
Like-for-like categories
6 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
Kimi K2.6 52.1 from 3 benchmarks, Qwen3.5-Flash 41.1 from 2 benchmarks.
Widest category
Coding, 22.9 points apart on average over 8 shared benchmarks.
Widest single gap
LMArena WebDev: React: Kimi K2.6 1505 against Qwen3.5-Flash 1229, 46.0 points apart on a 0 to 100 scale.
Output price
Kimi K2.6 $4.00 against Qwen3.5-Flash $0.26 per million output tokens, 15.4x apart.
Context window
Kimi K2.6 takes 262K tokens, Qwen3.5-Flash 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
CategoryKimi K2.6BarsQwen3.5-FlashTies
Coding80
Intelligence10
Reasoning71
Math40
Knowledge111
General210
All shared boards522
CodingLike-for-likeSix of these boards feed the Vibe Coding Index80
Coding benchmarks for Kimi K2.6 and Qwen3.5-Flash
BenchmarkKimi K2.6Qwen3.5-FlashLeader
LMArena WebDev15091244Kimi K2.6
AA Coding Index61.8Not measuredOnly Kimi K2.6 measured
LiveCodeBench (Vals AI)86.8%83.3%Kimi K2.6
SWE-bench Verified (Vals AI)76.2%64.4%Kimi K2.6
Vibe Code Bench (Vals AI)37.9%Not measuredOnly Kimi K2.6 measured
Code migration (Vals AI)27.8%Not measuredOnly Kimi K2.6 measured
ProgramBench (Vals AI)0.0%Not measuredOnly Kimi K2.6 measured
Terminal-Bench 2.1 (Vals AI)53.6%Not measuredOnly Kimi K2.6 measured
SciCode51.5%Not measuredOnly Kimi K2.6 measured
Terminal-Bench Hard (Artificial Analysis run)43.9%Not measuredOnly Kimi K2.6 measured
WeirdML55.9%Not measuredOnly Kimi K2.6 measured
ALE-Bench1092.7265.9Kimi K2.6
LMArena Text: coding14891412Kimi K2.6
LMArena Text: software and IT14841416Kimi K2.6
LMArena WebDev: React15051229Kimi K2.6
LMArena WebDev: HTML14851291Kimi K2.6
LMArena WebDev: from an image1521Not measuredOnly Kimi K2.6 measured
Neither model has a result on the other 22 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
Intelligence benchmarks for Kimi K2.6 and Qwen3.5-Flash
BenchmarkKimi K2.6Qwen3.5-FlashLeader
AA Intelligence Index27.0Not measuredOnly Kimi K2.6 measured
Epoch Capabilities Index150.9143.5Kimi K2.6
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index17 boards, none shared
Agentic work benchmarks for Kimi K2.6 and Qwen3.5-Flash
BenchmarkKimi K2.6Qwen3.5-FlashLeader
AA Agentic Index20.5Not measuredOnly Kimi K2.6 measured
Design Arena: agents building web apps1268Not measuredOnly Kimi K2.6 measured
Design Arena: agents building full-stack apps1155Not measuredOnly Kimi K2.6 measured
Design Arena: agents building mobile apps1156Not measuredOnly Kimi K2.6 measured
Design Arena: agents building Android apps1161Not measuredOnly Kimi K2.6 measured
Design Arena: agents building Godot games1120Not measuredOnly Kimi K2.6 measured
Design Arena: agents building games1141Not measuredOnly Kimi K2.6 measured
Design Arena: HTML slides1135Not measuredOnly Kimi K2.6 measured
Design Arena: PowerPoint slides1105Not measuredOnly Kimi K2.6 measured
Design Arena: spreadsheets1276Not measuredOnly Kimi K2.6 measured
Finance Agent (Vals AI)44.9%Not measuredOnly Kimi K2.6 measured
Tax Agent Bench (Vals AI)12.4%Not measuredOnly Kimi K2.6 measured
Legal Research Bench (Vals AI)15.9%Not measuredOnly Kimi K2.6 measured
Excel Modeling Benchmark (Vals AI)57.9%Not measuredOnly Kimi K2.6 measured
τ²-Bench Telecom95.9%Not measuredOnly Kimi K2.6 measured
OSWorld 2.04.6%Not measuredOnly Kimi K2.6 measured
Vending-Bench 2$6,205Not measuredOnly Kimi K2.6 measured
Neither model has a result on the other 24 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index71
Reasoning benchmarks for Kimi K2.6 and Qwen3.5-Flash
BenchmarkKimi K2.6Qwen3.5-FlashLeader
GPQA Diamond89.1%82.8%Kimi K2.6
MMMU Pro (Vals AI)86.3%81.9%Kimi K2.6
GPQA Diamond (Artificial Analysis run)91.1%Not measuredOnly Kimi K2.6 measured
Humanity's Last Exam (Artificial Analysis run)37.5%Not measuredOnly Kimi K2.6 measured
GPQA Diamond (Epoch AI run)90.8%82.3%Kimi K2.6
Chess puzzles20.0%14.0%Kimi K2.6
Mystery game puzzles18.0%20.0%Qwen3.5-Flash
EBR-bench2.4%Not measuredOnly Kimi K2.6 measured
LMArena Text: hard prompts14701403Kimi K2.6
LMArena Text: expert14911407Kimi K2.6
LMArena Text: hard prompts in English14711409Kimi K2.6
LMArena Vision: diagrams1298Not measuredOnly Kimi K2.6 measured
LMArena Vision: homework1310Not measuredOnly Kimi K2.6 measured
Neither model has a result on the other 9 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index40
Math benchmarks for Kimi K2.6 and Qwen3.5-Flash
BenchmarkKimi K2.6Qwen3.5-FlashLeader
AIMENot measured92.5%Only Qwen3.5-Flash measured
OTIS Mock AIME96.1%84.4%Kimi K2.6
FrontierMath, tiers 1 to 357.2%18.2%Kimi K2.6
FrontierMath, tier 425.6%Not measuredOnly Kimi K2.6 measured
ProofBench16.0%Not measuredOnly Kimi K2.6 measured
LMArena Text: math14741407Kimi K2.6
LMArena Text: mathematical work14801413Kimi K2.6
Neither model has a result on the other 6 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index111
Knowledge benchmarks for Kimi K2.6 and Qwen3.5-Flash
BenchmarkKimi K2.6Qwen3.5-FlashLeader
MMLU Pro87.6%84.1%Kimi K2.6
LegalBench (Vals AI)84.7%84.3%Kimi K2.6
CaseLaw (Vals AI)61.2%56.0%Kimi K2.6
CorpFin (Vals AI)66.7%63.6%Kimi K2.6
TaxEval (Vals AI)74.7%72.2%Kimi K2.6
MortgageTax (Vals AI)65.8%67.4%Qwen3.5-Flash
MedCode (Vals AI)40.1%33.0%Kimi K2.6
SimpleQA Verified34.9%20.3%Kimi K2.6
LMArena Text: science14681415Kimi K2.6
LMArena Text: medicine and healthcare14571407Kimi K2.6
LMArena Text: legal and government14621398Kimi K2.6
LMArena Text: business and finance14451394Kimi K2.6
Neither model has a result on the other 6 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared
Web design benchmarks for Kimi K2.6 and Qwen3.5-Flash
BenchmarkKimi K2.6Qwen3.5-FlashLeader
Design Arena: websites1269Not measuredOnly Kimi K2.6 measured
Design Arena: UI components1264Not measuredOnly Kimi K2.6 measured
Design Arena: game dev1250Not measuredOnly Kimi K2.6 measured
Design Arena: data viz1249Not measuredOnly Kimi K2.6 measured
Design Arena: 3D1267Not measuredOnly Kimi K2.6 measured
Design Arena: all code categories1271Not measuredOnly Kimi K2.6 measured
Design Arena: SVG1180Not measuredOnly Kimi K2.6 measured
Design Arena: ASCII art1165Not measuredOnly Kimi K2.6 measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index210
General benchmarks for Kimi K2.6 and Qwen3.5-Flash
BenchmarkKimi K2.6Qwen3.5-FlashLeader
Public Benefits Bench (Vals AI)56.6%Not measuredOnly Kimi K2.6 measured
SAGE (Vals AI)50.2%42.5%Kimi K2.6
MedScribe (Vals AI)78.2%70.6%Kimi K2.6
Vals Multimodal Index56.4%Not measuredOnly Kimi K2.6 measured
IFBench76.0%Not measuredOnly Kimi K2.6 measured
Long context reasoning (AA-LCR)81.0%Not measuredOnly Kimi K2.6 measured
DTBench90.9%82.9%Kimi K2.6
LMCA37.3%29.1%Kimi K2.6
Furniture assembly21.7%Not measuredOnly Kimi K2.6 measured
ExploitBench18.4%Not measuredOnly Kimi K2.6 measured
LMArena Text14551397Kimi K2.6
LMArena Text: instruction following14511374Kimi K2.6
LMArena Text: creative writing14341343Kimi K2.6
LMArena Vision1282Not measuredOnly Kimi K2.6 measured
LMArena Text: English14601404Kimi K2.6
LMArena Text: non-English14461385Kimi K2.6
LMArena Text: Chinese15201445Kimi K2.6
LMArena Text: German14511390Kimi K2.6
LMArena Text: Japanese14431369Kimi K2.6
LMArena Text: Korean14271344Kimi K2.6
LMArena Text: French14711413Kimi K2.6
LMArena Text: Spanish14641400Kimi K2.6
LMArena Text: Russian14461380Kimi K2.6
LMArena Text: Polish14381376Kimi K2.6
LMArena Text: multi-turn14531393Kimi K2.6
LMArena Text: longer queries14681392Kimi K2.6
LMArena Text: writing and language14391369Kimi K2.6
LMArena Text: entertainment and media14281347Kimi K2.6
LMArena Vision: English1287Not measuredOnly Kimi K2.6 measured
LMArena Vision: Chinese1346Not measuredOnly Kimi K2.6 measured
LMArena Vision: reading text1291Not measuredOnly Kimi K2.6 measured
LMArena Vision: humor1280Not measuredOnly Kimi K2.6 measured
LMArena Vision: creative writing1273Not measuredOnly Kimi K2.6 measured
LMArena Document1451Not measuredOnly Kimi K2.6 measured
Neither model has a result on the other 12 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Kimi K2.6 and Qwen3.5-Flash
BenchmarkKimi K2.6Qwen3.5-FlashLeader
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

Kimi K2.6$0.0029Fits in one request
Qwen3.5-Flash$0.0002Fits in one request

Qwen3.5-Flash costs less

Repository review

50K input + 3K output tokens

Kimi K2.6$0.059Fits in one request
Qwen3.5-Flash$0.0040Fits in one request

Qwen3.5-Flash costs less

Agent loop

200K input + 10K output tokens

Kimi K2.6$0.230Fits in one request
Qwen3.5-Flash$0.016Fits in one request

Qwen3.5-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 Kimi K2.6 and Qwen3.5-Flash
SpecificationMoonshotAI Kimi K2.6Qwen3.5-Flash
MakerMoonshot AIQwen
WeightsOpen weightsNo public weights listed
ReleasedApril 20, 2026February 25, 2026
Context window262K1M
Input $/Mtok$0.95$0.065
Output $/Mtok$4.00$0.26
Coding index52.141.1
Independent measurements behind it32
Cost per solved task$0.35$0.40
SourceOpenRouter listingOpenRouter listing

Questions

Is Kimi K2.6 better than Qwen3.5-Flash for coding?

Pick Kimi K2.6 for coding: it scores 52.1 on the Vibe Coding Index against 41.1 for Qwen3.5-Flash. Pick Qwen3.5-Flash for output tokens 15.4x cheaper ($0.26 vs $4.00 per million) and a larger context window (1M against 262K tokens).

Which is cheaper, Kimi K2.6 or Qwen3.5-Flash?

Kimi K2.6 costs $0.95 per million input tokens and $4.00 per million output tokens; Qwen3.5-Flash costs $0.065 and $0.26. Per solved SWE-bench Verified task, Kimi K2.6 costs $0.35 and Qwen3.5-Flash $0.40.

Which has the bigger context window, Kimi K2.6 or Qwen3.5-Flash?

Qwen3.5-Flash, with 1M tokens against 262K.

How many benchmarks is the Kimi K2.6 vs Qwen3.5-Flash comparison based on?

54 benchmarks have a result for both models as of October 22, 2026. Kimi K2.6's coding index rests on 3 independent benchmarks and Qwen3.5-Flash's on 2. Where only one model has a result, the page says so instead of naming a winner.

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<iframe src="https://llmbenchmark.ai/embed/compare/kimi-k2-6-vs-qwen3-5-flash-02-23" title="Kimi K2.6 vs Qwen3.5-Flash, LLMBenchmark.ai" width="100%" height="360" style="border:0;max-width:100%" loading="lazy"></iframe>
<p style="font:13px/1.4 sans-serif;margin:6px 0 0">Source: <a href="https://llmbenchmark.ai/compare/kimi-k2-6-vs-qwen3-5-flash-02-23">LLMBenchmark.ai, Kimi K2.6 vs Qwen3.5-Flash</a></p>