Gemini 3.8 Flash vs Qwen3.6 Plus

Gemini 3.8 Flash leads Qwen3.6 Plus on coding, 61.6 to 44.1 on the Vibe Coding Index, and Qwen3.6 Plus costs 1.9x less per output token ($1.95 vs $3.75 per million). Updated October 21, 2026; 75 benchmarks have a result for both.

Replace Gemini 3.8 Flash Replace Qwen3.6 Plus

Gemini 3.8 FlashGoogle

Coding: 61.6
Overall: 69.0
Output $/M: $3.75

Qwen3.6 PlusQwen

Coding: 44.1
Overall: 56.2
Output $/M: $1.95

vs boards won of 75 shared

Gemini 3.8 Flash or Qwen3.6 Plus: which to pick

Pick Gemini 3.8 Flash for coding: it scores 61.6 on the Vibe Coding Index against 44.1 for Qwen3.6 Plus.

Pick Qwen3.6 Plus for output tokens 1.9x cheaper ($1.95 vs $3.75 per million) and a lower cost per solved task ($1.19 against $2.74).

Model AGemini 3.8 FlashGoogle61.6/1006 independent benchmarks$2.74 per solved task Model BQwen3.6 PlusQwen44.1/1003 independent benchmarks$1.19 per solved task

75538

Shared results: 75
Gemini 3.8 Flash only: 53
Qwen3.6 Plus only: 8
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.

Coding
Vibe Coding Index, six public coding benchmarks
Gemini 3.8 Flash
Gemini 3.8 Flash scores 61.6 against 44.1.
6 and 3 benchmarks behind the scores
Intelligence
AA Intelligence Index
Gemini 3.8 Flash
Gemini 3.8 Flash leads, 40.9 against 27.0.
Same board, both measured
Agentic work
AA Agentic Index
No call
Only Gemini 3.8 Flash has a AA Agentic Index result, 40.2.
Directional only
Reasoning
GPQA Diamond
Gemini 3.8 Flash
Gemini 3.8 Flash leads, 94.4% against 87.4%.
Same board, both measured
Math
AIME
No call
Only Qwen3.6 Plus has a AIME result, 94.6%.
Directional only
Knowledge
MMLU Pro
Gemini 3.8 Flash
Gemini 3.8 Flash leads, 90.2% against 87.7%.
Same board, both measured
Web design
Design Arena: websites
Gemini 3.8 Flash
Gemini 3.8 Flash leads, 1300 against 1243.
Same board, both measured
General
Vals Index
No call
Only Gemini 3.8 Flash has a Vals Index result, 56.0%.
Directional only
Long documents
Listed context window
Gemini 3.8 Flash
Gemini 3.8 Flash takes 1.05M tokens against 1M.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Qwen3.6 Plus
Gemini 3.8 Flash $0.0026, Qwen3.6 Plus $0.0013 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
Qwen3.6 Plus
Gemini 3.8 Flash $2.74, Qwen3.6 Plus $1.19.
Published attempt cost and pass rate

At a glance

Coding index: Gemini 3.8 Flash 61.6 from 6 benchmarks, Qwen3.6 Plus 44.1 from 3 benchmarks.
Widest category: Agentic work, 21.7 points apart on average over 5 shared benchmarks.
Widest single gap: Vibe Code Bench (Vals AI): Gemini 3.8 Flash 78.7% against Qwen3.6 Plus 25.6%, 53.1 points apart on a 0 to 100 scale.
Output price: Gemini 3.8 Flash $3.75 against Qwen3.6 Plus $1.95 per million output tokens, 1.9x apart.
Context window: Gemini 3.8 Flash takes 1.05M tokens, Qwen3.6 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
Category	Gemini 3.8 Flash	Qwen3.6 Plus
Coding	14	0
Intelligence	2	0
Agentic work	4	1
Reasoning	10	0
Math	4	0
Knowledge	8	2
Web design	8	0
General	21	1
All shared boards	71	4

CodingLike-for-likeSix of these boards feed the Vibe Coding Index140

Coding benchmarks for Gemini 3.8 Flash and Qwen3.6 Plus
Benchmark	Gemini 3.8 Flash	Qwen3.6 Plus	Leader
LiveBench coding	82.2%	Not measured	Only Gemini 3.8 Flash measured
LMArena WebDev	1585	1461	Gemini 3.8 Flash
AA Coding Index	76.3	54.5	Gemini 3.8 Flash
LiveCodeBench (Vals AI)	89.5%	86.0%	Gemini 3.8 Flash
SWE-bench Verified (Vals AI)	80.0%	73.4%	Gemini 3.8 Flash
Terminal-Bench 4 (Vals AI)	19.7%	Not measured	Only Gemini 3.8 Flash measured
Vibe Code Bench (Vals AI)	78.7%	25.6%	Gemini 3.8 Flash
Code migration (Vals AI)	36.5%	11.1%	Gemini 3.8 Flash
ProgramBench (Vals AI)	1.0%	0.0%	Gemini 3.8 Flash
IOI (Vals AI)	56.9%	Not measured	Only Gemini 3.8 Flash measured
Terminal-Bench 2.1 (Vals AI)	81.3%	53.2%	Gemini 3.8 Flash
SWE-bench Multimodal (Vals AI)	40.8%	Not measured	Only Gemini 3.8 Flash measured
Vibe Code Bench 1-100 (Vals AI)	18.8%	Not measured	Only Gemini 3.8 Flash measured
SkillsBench (Vals AI)	58.0%	Not measured	Only Gemini 3.8 Flash measured
CyberBench (Vals AI)	43.8%	Not measured	Only Gemini 3.8 Flash measured
SciCode	56.6%	Not measured	Only Gemini 3.8 Flash measured
Terminal-Bench Hard (Artificial Analysis run)	Not measured	43.9%	Only Qwen3.6 Plus measured
FrontierCode	41.2%	Not measured	Only Gemini 3.8 Flash measured
FrontierSWE	19.6%	Not measured	Only Gemini 3.8 Flash measured
WeirdML	84.8%	Not measured	Only Gemini 3.8 Flash measured
ALE-Bench	1269.7	670.1	Gemini 3.8 Flash
LMArena Text: coding	1508	1467	Gemini 3.8 Flash
LMArena Text: software and IT	1507	1462	Gemini 3.8 Flash
LMArena WebDev: React	1577	1454	Gemini 3.8 Flash
LMArena WebDev: HTML	1616	1463	Gemini 3.8 Flash
LMArena WebDev: from an image	1593	1472	Gemini 3.8 Flash
SciCode	12.3%	Not measured	Only Gemini 3.8 Flash measured
Neither model has a result on the other 12 boards here

IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20

Intelligence benchmarks for Gemini 3.8 Flash and Qwen3.6 Plus
Benchmark	Gemini 3.8 Flash	Qwen3.6 Plus	Leader
AA Intelligence Index	40.9	27.0	Gemini 3.8 Flash
Epoch Capabilities Index	157.4	147.3	Gemini 3.8 Flash

Agentic workLike-for-likePublic boards, shown as published, kept out of the index41

Agentic work benchmarks for Gemini 3.8 Flash and Qwen3.6 Plus
Benchmark	Gemini 3.8 Flash	Qwen3.6 Plus	Leader
AA Agentic Index	40.2	Not measured	Only Gemini 3.8 Flash measured
Design Arena: agents building web apps	1238	Not measured	Only Gemini 3.8 Flash measured
Design Arena: agents building full-stack apps	1244	Not measured	Only Gemini 3.8 Flash measured
Design Arena: agents building mobile apps	1236	Not measured	Only Gemini 3.8 Flash measured
Design Arena: agents building Android apps	1074	Not measured	Only Gemini 3.8 Flash measured
Design Arena: agents building Godot games	1273	Not measured	Only Gemini 3.8 Flash measured
Design Arena: PowerPoint slides	1177	Not measured	Only Gemini 3.8 Flash measured
Design Arena: spreadsheets	1056	Not measured	Only Gemini 3.8 Flash measured
LiveBench research	79.1%	Not measured	Only Gemini 3.8 Flash measured
LiveBench browser	64.0%	Not measured	Only Gemini 3.8 Flash measured
LiveBench long agentic	30.1%	Not measured	Only Gemini 3.8 Flash measured
SREBench (Vals AI)	11.1%	Not measured	Only Gemini 3.8 Flash measured
Finance Agent (Vals AI)	61.4%	40.9%	Gemini 3.8 Flash
Tax Agent Bench (Vals AI)	32.1%	7.7%	Gemini 3.8 Flash
Legal Research Bench (Vals AI)	38.9%	14.9%	Gemini 3.8 Flash
Harvey's Legal Agent Benchmark (Vals AI)	12.1%	Not measured	Only Gemini 3.8 Flash measured
Excel Modeling Benchmark (Vals AI)	72.2%	32.9%	Gemini 3.8 Flash
BioMysteryBench (Vals AI)	62.2%	Not measured	Only Gemini 3.8 Flash measured
Terminal-Bench-Science (Vals AI)	8.6%	Not measured	Only Gemini 3.8 Flash measured
Vals Science Index	35.8%	Not measured	Only Gemini 3.8 Flash measured
Time Horizon Index (Vals AI)	18.8%	Not measured	Only Gemini 3.8 Flash measured
CUA-bench (Vals AI)	4.2%	Not measured	Only Gemini 3.8 Flash measured
τ²-Bench Telecom	Not measured	97.7%	Only Qwen3.6 Plus measured
APEX-Agents	64.3%	Not measured	Only Gemini 3.8 Flash measured
Remote Labor Index	5.8%	Not measured	Only Gemini 3.8 Flash measured
Vending-Bench 2	$5,094	$5,115	Qwen3.6 Plus
Neither model has a result on the other 15 boards here

ReasoningLike-for-likePublic boards, shown as published, kept out of the index100

Reasoning benchmarks for Gemini 3.8 Flash and Qwen3.6 Plus
Benchmark	Gemini 3.8 Flash	Qwen3.6 Plus	Leader
GPQA Diamond	94.4%	87.4%	Gemini 3.8 Flash
LiveBench reasoning	89.3%	Not measured	Only Gemini 3.8 Flash measured
MysteryMechanism (Vals AI)	36.5%	Not measured	Only Gemini 3.8 Flash measured
MMMU Pro (Vals AI)	89.1%	84.2%	Gemini 3.8 Flash
GPQA Diamond (Artificial Analysis run)	95.3%	88.2%	Gemini 3.8 Flash
Humanity's Last Exam (Artificial Analysis run)	47.8%	27.8%	Gemini 3.8 Flash
GPQA Diamond (Epoch AI run)	95.4%	88.4%	Gemini 3.8 Flash
ARC-AGI	98.5%	Not measured	Only Gemini 3.8 Flash measured
ARC-AGI-2	89.2%	Not measured	Only Gemini 3.8 Flash measured
Chess puzzles	58.0%	14.0%	Gemini 3.8 Flash
Mystery game puzzles	47.0%	12.0%	Gemini 3.8 Flash
LMArena Text: hard prompts	1509	1448	Gemini 3.8 Flash
LMArena Text: expert	1526	1454	Gemini 3.8 Flash
LMArena Text: hard prompts in English	1504	1455	Gemini 3.8 Flash
LMArena Vision: diagrams	1345	Not measured	Only Gemini 3.8 Flash measured
LMArena Vision: homework	1351	Not measured	Only Gemini 3.8 Flash measured
Neither model has a result on the other 6 boards here

MathLike-for-likePublic boards, shown as published, kept out of the index40

Math benchmarks for Gemini 3.8 Flash and Qwen3.6 Plus
Benchmark	Gemini 3.8 Flash	Qwen3.6 Plus	Leader
AIME	Not measured	94.6%	Only Qwen3.6 Plus measured
OTIS Mock AIME	98.9%	93.3%	Gemini 3.8 Flash
FrontierMath, tiers 1 to 3	68.4%	38.2%	Gemini 3.8 Flash
FrontierMath, tier 4	22.0%	Not measured	Only Gemini 3.8 Flash measured
ProofBench	48.0%	Not measured	Only Gemini 3.8 Flash measured
LMArena Text: math	1532	1449	Gemini 3.8 Flash
LMArena Text: mathematical work	1519	1448	Gemini 3.8 Flash
Neither model has a result on the other 6 boards here

KnowledgeLike-for-likePublic boards, shown as published, kept out of the index82

Knowledge benchmarks for Gemini 3.8 Flash and Qwen3.6 Plus
Benchmark	Gemini 3.8 Flash	Qwen3.6 Plus	Leader
MMLU Pro	90.2%	87.7%	Gemini 3.8 Flash
LegalBench (Vals AI)	87.0%	84.2%	Gemini 3.8 Flash
CaseLaw (Vals AI)	Not measured	51.5%	Only Qwen3.6 Plus measured
CorpFin (Vals AI)	Not measured	61.9%	Only Qwen3.6 Plus measured
TaxEval (Vals AI)	74.5%	74.7%	Qwen3.6 Plus
MortgageTax (Vals AI)	65.3%	68.0%	Qwen3.6 Plus
MedCode (Vals AI)	48.1%	36.9%	Gemini 3.8 Flash
SimpleQA Verified	69.7%	44.1%	Gemini 3.8 Flash
LMArena Text: science	1523	1439	Gemini 3.8 Flash
LMArena Text: medicine and healthcare	1508	1442	Gemini 3.8 Flash
LMArena Text: legal and government	1497	1437	Gemini 3.8 Flash
LMArena Text: business and finance	1479	1430	Gemini 3.8 Flash
FACTS Benchmark Suite	69.4%	Not measured	Only Gemini 3.8 Flash measured
Neither model has a result on the other 5 boards here

Web designLike-for-likePublic boards, shown as published, kept out of the index80

Web design benchmarks for Gemini 3.8 Flash and Qwen3.6 Plus
Benchmark	Gemini 3.8 Flash	Qwen3.6 Plus	Leader
Design Arena: websites	1300	1243	Gemini 3.8 Flash
Design Arena: UI components	1319	1233	Gemini 3.8 Flash
Design Arena: game dev	1305	1211	Gemini 3.8 Flash
Design Arena: data viz	1269	1228	Gemini 3.8 Flash
Design Arena: 3D	1295	1202	Gemini 3.8 Flash
Design Arena: all code categories	1304	1236	Gemini 3.8 Flash
Design Arena: SVG	1295	1161	Gemini 3.8 Flash
Design Arena: ASCII art	1265	1113	Gemini 3.8 Flash
LiveBench design	72.7%	Not measured	Only Gemini 3.8 Flash measured

GeneralLike-for-likePublic boards, shown as published, kept out of the index211

General benchmarks for Gemini 3.8 Flash and Qwen3.6 Plus
Benchmark	Gemini 3.8 Flash	Qwen3.6 Plus	Leader
Vals Index	56.0%	Not measured	Only Gemini 3.8 Flash measured
LiveBench data analysis	54.0%	Not measured	Only Gemini 3.8 Flash measured
Public Benefits Bench (Vals AI)	65.3%	Not measured	Only Gemini 3.8 Flash measured
SAGE (Vals AI)	35.1%	44.9%	Qwen3.6 Plus
MedScribe (Vals AI)	84.5%	77.0%	Gemini 3.8 Flash
Vals Multimodal Index	Not measured	51.5%	Only Qwen3.6 Plus measured
IFBench	Not measured	75.2%	Only Qwen3.6 Plus measured
Long context reasoning (AA-LCR)	84.0%	78.3%	Gemini 3.8 Flash
DTBench	95.7%	81.9%	Gemini 3.8 Flash
LMCA	52.9%	33.1%	Gemini 3.8 Flash
CL-bench	Not measured	20.3%	Only Qwen3.6 Plus measured
Surface Evolver Bench	76.9%	Not measured	Only Gemini 3.8 Flash measured
Furniture assembly	31.7%	Not measured	Only Gemini 3.8 Flash measured
LMArena Text	1499	1436	Gemini 3.8 Flash
LMArena Text: instruction following	1492	1424	Gemini 3.8 Flash
LMArena Text: creative writing	1488	1404	Gemini 3.8 Flash
LMArena Vision	1315	Not measured	Only Gemini 3.8 Flash measured
LMArena Text: English	1498	1445	Gemini 3.8 Flash
LMArena Text: non-English	1491	1424	Gemini 3.8 Flash
LMArena Text: Chinese	1553	1477	Gemini 3.8 Flash
LMArena Text: German	1501	1451	Gemini 3.8 Flash
LMArena Text: Japanese	1507	1390	Gemini 3.8 Flash
LMArena Text: Korean	1464	1379	Gemini 3.8 Flash
LMArena Text: French	1496	1455	Gemini 3.8 Flash
LMArena Text: Spanish	1487	1432	Gemini 3.8 Flash
LMArena Text: Russian	1514	1434	Gemini 3.8 Flash
LMArena Text: Polish	1497	1433	Gemini 3.8 Flash
LMArena Text: multi-turn	1503	1438	Gemini 3.8 Flash
LMArena Text: longer queries	1507	1439	Gemini 3.8 Flash
LMArena Text: writing and language	1494	1418	Gemini 3.8 Flash
LMArena Text: entertainment and media	1480	1402	Gemini 3.8 Flash
LMArena Vision: English	1318	Not measured	Only Gemini 3.8 Flash measured
LMArena Vision: Chinese	1416	Not measured	Only Gemini 3.8 Flash measured
LMArena Vision: reading text	1333	Not measured	Only Gemini 3.8 Flash measured
LMArena Vision: humor	1321	Not measured	Only Gemini 3.8 Flash measured
LMArena Vision: creative writing	1299	Not measured	Only Gemini 3.8 Flash measured
Neither model has a result on the other 10 boards here

Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared

Image generation benchmarks for Gemini 3.8 Flash and Qwen3.6 Plus
Benchmark	Gemini 3.8 Flash	Qwen3.6 Plus	Leader
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

Gemini 3.8 Flash$0.0026Fits in one request

Qwen3.6 Plus$0.0013Fits in one request

Qwen3.6 Plus costs less

Repository review

50K input + 3K output tokens

Gemini 3.8 Flash$0.049Fits in one request

Qwen3.6 Plus$0.022Fits in one request

Qwen3.6 Plus costs less

Agent loop

200K input + 10K output tokens

Gemini 3.8 Flash$0.188Fits in one request

Qwen3.6 Plus$0.085Fits in one request

Qwen3.6 Plus 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 Gemini 3.8 Flash and Qwen3.6 Plus
Specification	Google Gemini 3.8 Flash	Qwen3.6 Plus
Maker	Google	Qwen
Weights	No public weights listed	No public weights listed
Released	September 2, 2026	April 2, 2026
Context window	1.05M	1M
Input $/Mtok	$0.75	$0.325
Output $/Mtok	$3.75	$1.95
Coding index	61.6	44.1
Independent measurements behind it	6	3
Cost per solved task	$2.74	$1.19
Source	OpenRouter listing	OpenRouter listing

Questions

Is Gemini 3.8 Flash better than Qwen3.6 Plus for coding?

Pick Gemini 3.8 Flash for coding: it scores 61.6 on the Vibe Coding Index against 44.1 for Qwen3.6 Plus. Pick Qwen3.6 Plus for output tokens 1.9x cheaper ($1.95 vs $3.75 per million) and a lower cost per solved task ($1.19 against $2.74).

Which is cheaper, Gemini 3.8 Flash or Qwen3.6 Plus?

Gemini 3.8 Flash costs $0.75 per million input tokens and $3.75 per million output tokens; Qwen3.6 Plus costs $0.325 and $1.95. Per solved SWE-bench Verified task, Gemini 3.8 Flash costs $2.74 and Qwen3.6 Plus $1.19.

Which has the bigger context window, Gemini 3.8 Flash or Qwen3.6 Plus?

Gemini 3.8 Flash, with 1.05M tokens against 1M.

How many benchmarks is the Gemini 3.8 Flash vs Qwen3.6 Plus comparison based on?

75 benchmarks have a result for both models as of October 21, 2026. Gemini 3.8 Flash's coding index rests on 6 independent benchmarks and Qwen3.6 Plus's on 3. 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/gemini-3-8-flash-vs-qwen3-6-plus" title="Gemini 3.8 Flash vs Qwen3.6 Plus, 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/gemini-3-8-flash-vs-qwen3-6-plus">LLMBenchmark.ai, Gemini 3.8 Flash vs Qwen3.6 Plus</a></p>

Gemini 3.8 Flash or Qwen3.6 Plus: which to pick

Which one for your work

Coding

Intelligence

Agentic work

Reasoning

Math

Knowledge

Web design

General

Long documents

Everyday cost

Cost per solved task

At a glance

Benchmark by benchmark

What each workload costs

Chat turn

Repository review

Agent loop

Specification differences

Questions

Compare next