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Grok 4.6 vs Qwen3.5-Flash

Grok 4.6 leads Qwen3.5-Flash on coding, 65.7 to 41.1 on the Vibe Coding Index, and Qwen3.5-Flash costs 23.1x less per output token ($0.26 vs $6.00 per million). Updated October 22, 2026; 52 benchmarks have a result for both.

Replace Grok 4.6 Replace Qwen3.5-Flash
Grok 4.6xAI
Coding
65.7
Overall
67.4
Output $/M
$6.00
49
Qwen3.5-FlashQwen
Coding
41.1
Overall
50.1
Output $/M
$0.26
3
vs boards won of 52 shared

Grok 4.6 or Qwen3.5-Flash: which to pick

Pick Grok 4.6 for coding: it scores 65.7 on the Vibe Coding Index against 41.1 for Qwen3.5-Flash.

Pick Qwen3.5-Flash for output tokens 23.1x cheaper ($0.26 vs $6.00 per million) and a lower cost per solved task ($0.40 against $0.82).

Model AGrok 4.6xAI65.7/1006 independent benchmarks$0.82 per solved taskModel BQwen3.5-FlashQwen41.1/1002 independent benchmarks$0.40 per solved task
Shared results
52
Grok 4.6 only
71
Qwen3.5-Flash only
3
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
Grok 4.6 65.7 from 6 benchmarks, Qwen3.5-Flash 41.1 from 2 benchmarks.
Widest category
Coding, 32.4 points apart on average over 8 shared benchmarks.
Widest single gap
LMArena WebDev: React: Grok 4.6 1631 against Qwen3.5-Flash 1229, 61.8 points apart on a 0 to 100 scale.
Output price
Grok 4.6 $6.00 against Qwen3.5-Flash $0.26 per million output tokens, 23.1x apart.
Context window
Grok 4.6 takes 500K 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
CategoryGrok 4.6BarsQwen3.5-FlashTies
Coding80
Intelligence10
Reasoning70
Math40
Knowledge92
General201
All shared boards493
CodingLike-for-likeSix of these boards feed the Vibe Coding Index80
Coding benchmarks for Grok 4.6 and Qwen3.5-Flash
BenchmarkGrok 4.6Qwen3.5-FlashLeader
LiveBench coding89.1%Not measuredOnly Grok 4.6 measured
LMArena WebDev16171244Grok 4.6
AA Coding Index76.8Not measuredOnly Grok 4.6 measured
LiveCodeBench (Vals AI)88.2%83.3%Grok 4.6
SWE-bench Verified (Vals AI)95.6%64.4%Grok 4.6
Terminal-Bench 4 (Vals AI)17.2%Not measuredOnly Grok 4.6 measured
Vibe Code Bench (Vals AI)76.2%Not measuredOnly Grok 4.6 measured
Code migration (Vals AI)44.6%Not measuredOnly Grok 4.6 measured
ProgramBench (Vals AI)1.0%Not measuredOnly Grok 4.6 measured
IOI (Vals AI)47.6%Not measuredOnly Grok 4.6 measured
Terminal-Bench 2.1 (Vals AI)78.3%Not measuredOnly Grok 4.6 measured
Vibe Code Bench 1-100 (Vals AI)14.8%Not measuredOnly Grok 4.6 measured
SkillsBench (Vals AI)55.8%Not measuredOnly Grok 4.6 measured
CyberBench (Vals AI)67.7%Not measuredOnly Grok 4.6 measured
SciCode56.5%Not measuredOnly Grok 4.6 measured
FrontierCode48.0%Not measuredOnly Grok 4.6 measured
FrontierSWE25.3%Not measuredOnly Grok 4.6 measured
WeirdML67.3%Not measuredOnly Grok 4.6 measured
ALE-Bench1508.1265.9Grok 4.6
LMArena Text: coding14661412Grok 4.6
LMArena Text: software and IT14571416Grok 4.6
LMArena WebDev: React16311229Grok 4.6
LMArena WebDev: HTML15971291Grok 4.6
LMArena WebDev: from an image1603Not measuredOnly Grok 4.6 measured
Neither model has a result on the other 19 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
Intelligence benchmarks for Grok 4.6 and Qwen3.5-Flash
BenchmarkGrok 4.6Qwen3.5-FlashLeader
AA Intelligence Index44.3Not measuredOnly Grok 4.6 measured
Epoch Capabilities Index156.6143.5Grok 4.6
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index22 boards, none shared
Agentic work benchmarks for Grok 4.6 and Qwen3.5-Flash
BenchmarkGrok 4.6Qwen3.5-FlashLeader
AA Agentic Index53.0Not measuredOnly Grok 4.6 measured
Design Arena: agents building web apps1248Not measuredOnly Grok 4.6 measured
Design Arena: agents building full-stack apps1264Not measuredOnly Grok 4.6 measured
Design Arena: agents building mobile apps1234Not measuredOnly Grok 4.6 measured
Design Arena: agents building Android apps1291Not measuredOnly Grok 4.6 measured
Design Arena: agents building Godot games1276Not measuredOnly Grok 4.6 measured
Design Arena: agents building games1210Not measuredOnly Grok 4.6 measured
Design Arena: HTML slides1200Not measuredOnly Grok 4.6 measured
Design Arena: PowerPoint slides1216Not measuredOnly Grok 4.6 measured
LiveBench research84.5%Not measuredOnly Grok 4.6 measured
LiveBench browser64.0%Not measuredOnly Grok 4.6 measured
LiveBench long agentic40.7%Not measuredOnly Grok 4.6 measured
Finance Agent (Vals AI)53.7%Not measuredOnly Grok 4.6 measured
Tax Agent Bench (Vals AI)33.1%Not measuredOnly Grok 4.6 measured
Legal Research Bench (Vals AI)48.1%Not measuredOnly Grok 4.6 measured
Excel Modeling Benchmark (Vals AI)62.7%Not measuredOnly Grok 4.6 measured
BioMysteryBench (Vals AI)72.2%Not measuredOnly Grok 4.6 measured
Terminal-Bench-Science (Vals AI)11.4%Not measuredOnly Grok 4.6 measured
Vals Science Index38.1%Not measuredOnly Grok 4.6 measured
Time Horizon Index (Vals AI)5.8%Not measuredOnly Grok 4.6 measured
APEX-Agents65.3%Not measuredOnly Grok 4.6 measured
Vending-Bench 2$9,047Not measuredOnly Grok 4.6 measured
Neither model has a result on the other 20 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index70
Reasoning benchmarks for Grok 4.6 and Qwen3.5-Flash
BenchmarkGrok 4.6Qwen3.5-FlashLeader
GPQA Diamond94.7%82.8%Grok 4.6
LiveBench reasoning91.2%Not measuredOnly Grok 4.6 measured
MysteryMechanism (Vals AI)30.6%Not measuredOnly Grok 4.6 measured
MMMU Pro (Vals AI)Not measured81.9%Only Qwen3.5-Flash measured
GPQA Diamond (Artificial Analysis run)94.9%Not measuredOnly Grok 4.6 measured
Humanity's Last Exam (Artificial Analysis run)44.1%Not measuredOnly Grok 4.6 measured
GPQA Diamond (Epoch AI run)94.0%82.3%Grok 4.6
ARC-AGI87.5%Not measuredOnly Grok 4.6 measured
ARC-AGI-267.1%Not measuredOnly Grok 4.6 measured
SimpleBench75.9%Not measuredOnly Grok 4.6 measured
Chess puzzles33.0%14.0%Grok 4.6
Mystery game puzzles34.0%20.0%Grok 4.6
EBR-bench30.5%Not measuredOnly Grok 4.6 measured
LMArena Text: hard prompts14481403Grok 4.6
LMArena Text: expert14691407Grok 4.6
LMArena Text: hard prompts in English14451409Grok 4.6
LMArena Vision: diagrams1285Not measuredOnly Grok 4.6 measured
LMArena Vision: homework1283Not measuredOnly Grok 4.6 measured
Neither model has a result on the other 5 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index40
Math benchmarks for Grok 4.6 and Qwen3.5-Flash
BenchmarkGrok 4.6Qwen3.5-FlashLeader
AIMENot measured92.5%Only Qwen3.5-Flash measured
OTIS Mock AIME99.2%84.4%Grok 4.6
FrontierMath, tiers 1 to 366.0%18.2%Grok 4.6
FrontierMath, tier 431.7%Not measuredOnly Grok 4.6 measured
ProofBench51.0%Not measuredOnly Grok 4.6 measured
LMArena Text: math14171407Grok 4.6
LMArena Text: mathematical work14641413Grok 4.6
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index92
Knowledge benchmarks for Grok 4.6 and Qwen3.5-Flash
BenchmarkGrok 4.6Qwen3.5-FlashLeader
MMLU Pro89.4%84.1%Grok 4.6
LegalBench (Vals AI)86.3%84.3%Grok 4.6
CaseLaw (Vals AI)Not measured56.0%Only Qwen3.5-Flash measured
CorpFin (Vals AI)66.2%63.6%Grok 4.6
TaxEval (Vals AI)71.1%72.2%Qwen3.5-Flash
MortgageTax (Vals AI)64.2%67.4%Qwen3.5-Flash
MedCode (Vals AI)44.7%33.0%Grok 4.6
SimpleQA Verified49.3%20.3%Grok 4.6
LMArena Text: science14371415Grok 4.6
LMArena Text: medicine and healthcare14201407Grok 4.6
LMArena Text: legal and government14291398Grok 4.6
LMArena Text: business and finance14161394Grok 4.6
Neither model has a result on the other 8 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index9 boards, none shared
Web design benchmarks for Grok 4.6 and Qwen3.5-Flash
BenchmarkGrok 4.6Qwen3.5-FlashLeader
Design Arena: websites1289Not measuredOnly Grok 4.6 measured
Design Arena: UI components1293Not measuredOnly Grok 4.6 measured
Design Arena: game dev1295Not measuredOnly Grok 4.6 measured
Design Arena: data viz1282Not measuredOnly Grok 4.6 measured
Design Arena: 3D1275Not measuredOnly Grok 4.6 measured
Design Arena: all code categories1292Not measuredOnly Grok 4.6 measured
Design Arena: SVG1238Not measuredOnly Grok 4.6 measured
Design Arena: ASCII art1279Not measuredOnly Grok 4.6 measured
LiveBench design79.8%Not measuredOnly Grok 4.6 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index201
General benchmarks for Grok 4.6 and Qwen3.5-Flash
BenchmarkGrok 4.6Qwen3.5-FlashLeader
LiveBench data analysis75.3%Not measuredOnly Grok 4.6 measured
Public Benefits Bench (Vals AI)66.8%Not measuredOnly Grok 4.6 measured
SAGE (Vals AI)28.9%42.5%Qwen3.5-Flash
MedScribe (Vals AI)86.5%70.6%Grok 4.6
Long context reasoning (AA-LCR)81.0%Not measuredOnly Grok 4.6 measured
DTBench97.3%82.9%Grok 4.6
LMCA48.5%29.1%Grok 4.6
Furniture assembly40.0%Not measuredOnly Grok 4.6 measured
LMArena Text14291397Grok 4.6
LMArena Text: instruction following14311374Grok 4.6
LMArena Text: creative writing14261343Grok 4.6
LMArena Vision1263Not measuredOnly Grok 4.6 measured
LMArena Text: English14331404Grok 4.6
LMArena Text: non-English14201385Grok 4.6
LMArena Text: Chinese14761445Grok 4.6
LMArena Text: German14261390Grok 4.6
LMArena Text: Japanese13781369Grok 4.6
LMArena Text: Korean13911344Grok 4.6
LMArena Text: French14551413Grok 4.6
LMArena Text: Spanish14141400Grok 4.6
LMArena Text: Russian14211380Grok 4.6
LMArena Text: Polish14301376Grok 4.6
LMArena Text: multi-turn14251393Grok 4.6
LMArena Text: longer queries14561392Grok 4.6
LMArena Text: writing and language14291369Grok 4.6
LMArena Text: entertainment and media14211347Grok 4.6
LMArena Vision: English1270Not measuredOnly Grok 4.6 measured
LMArena Vision: Chinese1289Not measuredOnly Grok 4.6 measured
LMArena Vision: reading text1272Not measuredOnly Grok 4.6 measured
LMArena Vision: humor1270Not measuredOnly Grok 4.6 measured
LMArena Vision: creative writing1262Not measuredOnly Grok 4.6 measured
LMArena Document1452Not measuredOnly Grok 4.6 measured
Neither model has a result on the other 16 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Grok 4.6 and Qwen3.5-Flash
BenchmarkGrok 4.6Qwen3.5-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

Grok 4.6$0.0050Fits in one request
Qwen3.5-Flash$0.0002Fits in one request

Qwen3.5-Flash costs less

Repository review

50K input + 3K output tokens

Grok 4.6$0.118Fits in one request
Qwen3.5-Flash$0.0040Fits in one request

Qwen3.5-Flash costs less

Agent loop

200K input + 10K output tokens

Grok 4.6$0.460Fits 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 Grok 4.6 and Qwen3.5-Flash
SpecificationSpaceXAI Grok 4.6Qwen3.5-Flash
MakerxAIQwen
WeightsNo public weights listedNo public weights listed
ReleasedAugust 12, 2026February 25, 2026
Context window500K1M
Input $/Mtok$2.00$0.065
Output $/Mtok$6.00$0.26
Coding index65.741.1
Independent measurements behind it62
Cost per solved task$0.82$0.40
SourceOpenRouter listingOpenRouter listing

Questions

Is Grok 4.6 better than Qwen3.5-Flash for coding?

Pick Grok 4.6 for coding: it scores 65.7 on the Vibe Coding Index against 41.1 for Qwen3.5-Flash. Pick Qwen3.5-Flash for output tokens 23.1x cheaper ($0.26 vs $6.00 per million) and a lower cost per solved task ($0.40 against $0.82).

Which is cheaper, Grok 4.6 or Qwen3.5-Flash?

Grok 4.6 costs $2.00 per million input tokens and $6.00 per million output tokens; Qwen3.5-Flash costs $0.065 and $0.26. Per solved SWE-bench Verified task, Grok 4.6 costs $0.82 and Qwen3.5-Flash $0.40.

Which has the bigger context window, Grok 4.6 or Qwen3.5-Flash?

Qwen3.5-Flash, with 1M tokens against 500K.

How many benchmarks is the Grok 4.6 vs Qwen3.5-Flash comparison based on?

52 benchmarks have a result for both models as of October 22, 2026. Grok 4.6's coding index rests on 6 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/grok-4-6-vs-qwen3-5-flash-02-23" title="Grok 4.6 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/grok-4-6-vs-qwen3-5-flash-02-23">LLMBenchmark.ai, Grok 4.6 vs Qwen3.5-Flash</a></p>