Gemini 3.6 Flash vs Qwen3.5 Plus 2026-04-20

Gemini 3.6 Flash leads Qwen3.5 Plus 2026-04-20 on coding, 62.5 to 39.5 on the Vibe Coding Index, and Qwen3.5 Plus 2026-04-20 costs 2.1x less per output token ($1.80 vs $3.75 per million). Updated October 22, 2026; 19 benchmarks have a result for both.

Replace Gemini 3.6 Flash Replace Qwen3.5 Plus 2026-04-20

Gemini 3.6 FlashGoogle

Coding: 62.5
Overall: 68.3
Output $/M: $3.75

Qwen3.5 Plus 2026-04-20Qwen

Coding: 39.5
Overall: No data
Output $/M: $1.80

vs boards won of 19 shared

Gemini 3.6 Flash or Qwen3.5 Plus 2026-04-20: which to pick

Pick Gemini 3.6 Flash for coding: it scores 62.5 on the Vibe Coding Index against 39.5 for Qwen3.5 Plus 2026-04-20.

Pick Qwen3.5 Plus 2026-04-20 for output tokens 2.1x cheaper ($1.80 vs $3.75 per million) and a lower cost per solved task ($1.35 against $1.49).

Model AGemini 3.6 FlashGoogle62.5/1004 independent benchmarks$1.49 per solved task Model BQwen3.5 Plus 2026-04-20Qwen39.5/1002 independent benchmarks$1.35 per solved task

19906

Shared results: 19
Gemini 3.6 Flash only: 90
Qwen3.5 Plus 2026-04-20 only: 6
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.

Coding
Vibe Coding Index, six public coding benchmarks
Gemini 3.6 Flash
Gemini 3.6 Flash scores 62.5 against 39.5.
4 and 2 benchmarks behind the scores
Intelligence
AA Intelligence Index
No call
Only Gemini 3.6 Flash has a AA Intelligence Index result, 34.0.
Directional only
Agentic work
AA Agentic Index
No call
Only Gemini 3.6 Flash has a AA Agentic Index result, 29.0.
Directional only
Reasoning
GPQA Diamond
Gemini 3.6 Flash
Gemini 3.6 Flash leads, 93.4% against 87.4%.
Same board, both measured
Math
AIME
No call
Only Qwen3.5 Plus 2026-04-20 has a AIME result, 86.0%.
Directional only
Knowledge
MMLU Pro
Gemini 3.6 Flash
Gemini 3.6 Flash leads, 89.3% against 87.2%.
Same board, both measured
Web design
Design Arena: websites
No call
Only Gemini 3.6 Flash has a Design Arena: websites result, 1300.
Directional only
Long documents
Listed context window
Gemini 3.6 Flash
Gemini 3.6 Flash takes 1.05M tokens against 1M.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Qwen3.5 Plus 2026-04-20
Gemini 3.6 Flash $0.0026, Qwen3.5 Plus 2026-04-20 $0.0012 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
Qwen3.5 Plus 2026-04-20
Gemini 3.6 Flash $1.49, Qwen3.5 Plus 2026-04-20 $1.35.
Published attempt cost and pass rate

At a glance

Coding index: Gemini 3.6 Flash 62.5 from 4 benchmarks, Qwen3.5 Plus 2026-04-20 39.5 from 2 benchmarks.
Widest category: Reasoning, 25.6 points apart on average over 5 shared benchmarks.
Widest single gap: MMMU Pro (Vals AI): Gemini 3.6 Flash 88.4% against Qwen3.5 Plus 2026-04-20 22.8%, 65.6 points apart on a 0 to 100 scale.
Output price: Gemini 3.6 Flash $3.75 against Qwen3.5 Plus 2026-04-20 $1.80 per million output tokens, 2.1x apart.
Context window: Gemini 3.6 Flash takes 1.05M tokens, Qwen3.5 Plus 2026-04-20 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 3.6 Flash	Qwen3.5 Plus 2026-04-20
Coding	4	0
Intelligence	1	0
Reasoning	5	0
Math	1	0
Knowledge	4	1
General	3	0
All shared boards	18	1

CodingLike-for-likeSix of these boards feed the Vibe Coding Index40

Coding benchmarks for Gemini 3.6 Flash and Qwen3.5 Plus 2026-04-20
Benchmark	Gemini 3.6 Flash	Qwen3.5 Plus 2026-04-20	Leader
LMArena WebDev	1538	Not measured	Only Gemini 3.6 Flash measured
AA Coding Index	69.2	Not measured	Only Gemini 3.6 Flash measured
LiveCodeBench (Vals AI)	88.1%	85.3%	Gemini 3.6 Flash
SWE-bench Verified (Vals AI)	79.6%	71.2%	Gemini 3.6 Flash
Vibe Code Bench (Vals AI)	64.0%	15.7%	Gemini 3.6 Flash
Code migration (Vals AI)	30.9%	Not measured	Only Gemini 3.6 Flash measured
ProgramBench (Vals AI)	0.0%	Not measured	Only Gemini 3.6 Flash measured
IOI (Vals AI)	35.1%	Not measured	Only Gemini 3.6 Flash measured
Terminal-Bench 2.1 (Vals AI)	73.8%	Not measured	Only Gemini 3.6 Flash measured
CyberBench (Vals AI)	45.4%	Not measured	Only Gemini 3.6 Flash measured
SciCode	53.4%	Not measured	Only Gemini 3.6 Flash measured
FrontierCode	34.4%	Not measured	Only Gemini 3.6 Flash measured
WeirdML	56.1%	Not measured	Only Gemini 3.6 Flash measured
ALE-Bench	715.5	608.9	Gemini 3.6 Flash
LMArena Text: coding	1491	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: software and IT	1492	Not measured	Only Gemini 3.6 Flash measured
LMArena WebDev: React	1528	Not measured	Only Gemini 3.6 Flash measured
LMArena WebDev: HTML	1547	Not measured	Only Gemini 3.6 Flash measured
LMArena WebDev: from an image	1545	Not measured	Only Gemini 3.6 Flash measured
SciCode	10.8%	Not measured	Only Gemini 3.6 Flash 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 Gemini 3.6 Flash and Qwen3.5 Plus 2026-04-20
Benchmark	Gemini 3.6 Flash	Qwen3.5 Plus 2026-04-20	Leader
AA Intelligence Index	34.0	Not measured	Only Gemini 3.6 Flash measured
Epoch Capabilities Index	154.5	146.2	Gemini 3.6 Flash

Agentic workDirectional onlyPublic boards, shown as published, kept out of the index17 boards, none shared

Agentic work benchmarks for Gemini 3.6 Flash and Qwen3.5 Plus 2026-04-20
Benchmark	Gemini 3.6 Flash	Qwen3.5 Plus 2026-04-20	Leader
AA Agentic Index	29.0	Not measured	Only Gemini 3.6 Flash measured
Design Arena: agents building web apps	1197	Not measured	Only Gemini 3.6 Flash measured
Design Arena: agents building full-stack apps	1181	Not measured	Only Gemini 3.6 Flash measured
Design Arena: agents building mobile apps	1198	Not measured	Only Gemini 3.6 Flash measured
Design Arena: agents building Android apps	1204	Not measured	Only Gemini 3.6 Flash measured
Design Arena: agents building games	1180	Not measured	Only Gemini 3.6 Flash measured
Design Arena: HTML slides	1099	Not measured	Only Gemini 3.6 Flash measured
Design Arena: PowerPoint slides	1121	Not measured	Only Gemini 3.6 Flash measured
Design Arena: spreadsheets	1071	Not measured	Only Gemini 3.6 Flash measured
Finance Agent (Vals AI)	56.3%	Not measured	Only Gemini 3.6 Flash measured
Tax Agent Bench (Vals AI)	18.0%	Not measured	Only Gemini 3.6 Flash measured
Legal Research Bench (Vals AI)	25.0%	Not measured	Only Gemini 3.6 Flash measured
Excel Modeling Benchmark (Vals AI)	65.4%	Not measured	Only Gemini 3.6 Flash measured
BioMysteryBench (Vals AI)	58.5%	Not measured	Only Gemini 3.6 Flash measured
Terminal-Bench-Science (Vals AI)	4.3%	Not measured	Only Gemini 3.6 Flash measured
APEX-Agents	46.9%	Not measured	Only Gemini 3.6 Flash measured
Vending-Bench 2	Not measured	$1	Only Qwen3.5 Plus 2026-04-20 measured
Neither model has a result on the other 24 boards here

ReasoningLike-for-likePublic boards, shown as published, kept out of the index50

Reasoning benchmarks for Gemini 3.6 Flash and Qwen3.5 Plus 2026-04-20
Benchmark	Gemini 3.6 Flash	Qwen3.5 Plus 2026-04-20	Leader
GPQA Diamond	93.4%	87.4%	Gemini 3.6 Flash
MMMU Pro (Vals AI)	88.4%	22.8%	Gemini 3.6 Flash
GPQA Diamond (Artificial Analysis run)	92.8%	Not measured	Only Gemini 3.6 Flash measured
Humanity's Last Exam (Artificial Analysis run)	40.8%	Not measured	Only Gemini 3.6 Flash measured
GPQA Diamond (Epoch AI run)	94.1%	84.8%	Gemini 3.6 Flash
ARC-AGI	91.2%	Not measured	Only Gemini 3.6 Flash measured
ARC-AGI-2	60.4%	Not measured	Only Gemini 3.6 Flash measured
Chess puzzles	42.0%	8.0%	Gemini 3.6 Flash
Mystery game puzzles	30.0%	17.0%	Gemini 3.6 Flash
LMArena Text: hard prompts	1486	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: expert	1490	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: hard prompts in English	1484	Not measured	Only Gemini 3.6 Flash measured
LMArena Vision: diagrams	1314	Not measured	Only Gemini 3.6 Flash measured
LMArena Vision: homework	1314	Not measured	Only Gemini 3.6 Flash measured
Neither model has a result on the other 8 boards here

MathLike-for-likePublic boards, shown as published, kept out of the index10

Math benchmarks for Gemini 3.6 Flash and Qwen3.5 Plus 2026-04-20
Benchmark	Gemini 3.6 Flash	Qwen3.5 Plus 2026-04-20	Leader
AIME	Not measured	86.0%	Only Qwen3.5 Plus 2026-04-20 measured
OTIS Mock AIME	94.2%	86.7%	Gemini 3.6 Flash
FrontierMath, tiers 1 to 3	58.9%	Not measured	Only Gemini 3.6 Flash measured
FrontierMath, tier 4	22.0%	Not measured	Only Gemini 3.6 Flash measured
ProofBench	36.0%	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: math	1508	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: mathematical work	1492	Not measured	Only Gemini 3.6 Flash measured
Neither model has a result on the other 6 boards here

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

Knowledge benchmarks for Gemini 3.6 Flash and Qwen3.5 Plus 2026-04-20
Benchmark	Gemini 3.6 Flash	Qwen3.5 Plus 2026-04-20	Leader
MMLU Pro	89.3%	87.2%	Gemini 3.6 Flash
LegalBench (Vals AI)	86.7%	85.1%	Gemini 3.6 Flash
CaseLaw (Vals AI)	Not measured	59.7%	Only Qwen3.5 Plus 2026-04-20 measured
CorpFin (Vals AI)	63.3%	65.3%	Qwen3.5 Plus 2026-04-20
TaxEval (Vals AI)	74.9%	Not measured	Only Gemini 3.6 Flash measured
MortgageTax (Vals AI)	67.6%	60.8%	Gemini 3.6 Flash
MedQA (Vals AI)	Not measured	95.2%	Only Qwen3.5 Plus 2026-04-20 measured
MedCode (Vals AI)	53.1%	Not measured	Only Gemini 3.6 Flash measured
SimpleQA Verified	66.2%	25.4%	Gemini 3.6 Flash
LMArena Text: science	1489	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: medicine and healthcare	1469	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: legal and government	1479	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: business and finance	1464	Not measured	Only Gemini 3.6 Flash measured
FACTS Benchmark Suite	65.3%	Not measured	Only Gemini 3.6 Flash measured
Neither model has a result on the other 4 boards here

Web designDirectional onlyPublic boards, shown as published, kept out of the index7 boards, none shared

Web design benchmarks for Gemini 3.6 Flash and Qwen3.5 Plus 2026-04-20
Benchmark	Gemini 3.6 Flash	Qwen3.5 Plus 2026-04-20	Leader
Design Arena: websites	1300	Not measured	Only Gemini 3.6 Flash measured
Design Arena: UI components	1294	Not measured	Only Gemini 3.6 Flash measured
Design Arena: game dev	1263	Not measured	Only Gemini 3.6 Flash measured
Design Arena: data viz	1289	Not measured	Only Gemini 3.6 Flash measured
Design Arena: 3D	1271	Not measured	Only Gemini 3.6 Flash measured
Design Arena: all code categories	1289	Not measured	Only Gemini 3.6 Flash measured
Design Arena: ASCII art	1281	Not measured	Only Gemini 3.6 Flash measured
Neither model has a result on the other 2 boards here

GeneralLike-for-likePublic boards, shown as published, kept out of the index30

General benchmarks for Gemini 3.6 Flash and Qwen3.5 Plus 2026-04-20
Benchmark	Gemini 3.6 Flash	Qwen3.5 Plus 2026-04-20	Leader
Public Benefits Bench (Vals AI)	56.6%	Not measured	Only Gemini 3.6 Flash measured
SAGE (Vals AI)	48.7%	30.4%	Gemini 3.6 Flash
MedScribe (Vals AI)	79.7%	Not measured	Only Gemini 3.6 Flash measured
Vals Multimodal Index	65.1%	Not measured	Only Gemini 3.6 Flash measured
Long context reasoning (AA-LCR)	80.0%	Not measured	Only Gemini 3.6 Flash measured
DTBench	95.5%	80.5%	Gemini 3.6 Flash
LMCA	44.9%	36.4%	Gemini 3.6 Flash
CL-bench	Not measured	19.8%	Only Qwen3.5 Plus 2026-04-20 measured
Furniture assembly	23.3%	Not measured	Only Gemini 3.6 Flash measured
CL-bench Life	Not measured	12.4%	Only Qwen3.5 Plus 2026-04-20 measured
LMArena Text	1480	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: instruction following	1467	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: creative writing	1466	Not measured	Only Gemini 3.6 Flash measured
LMArena Vision	1299	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: English	1482	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: non-English	1470	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: Chinese	1531	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: German	1480	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: Japanese	1475	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: Korean	1429	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: French	1503	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: Spanish	1476	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: Russian	1488	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: Polish	1473	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: multi-turn	1481	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: longer queries	1475	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: writing and language	1470	Not measured	Only Gemini 3.6 Flash measured
LMArena Text: entertainment and media	1456	Not measured	Only Gemini 3.6 Flash measured
LMArena Vision: English	1295	Not measured	Only Gemini 3.6 Flash measured
LMArena Vision: Chinese	1357	Not measured	Only Gemini 3.6 Flash measured
LMArena Vision: reading text	1312	Not measured	Only Gemini 3.6 Flash measured
LMArena Vision: humor	1289	Not measured	Only Gemini 3.6 Flash measured
LMArena Vision: creative writing	1278	Not measured	Only Gemini 3.6 Flash measured
LMArena Document	1456	Not measured	Only Gemini 3.6 Flash 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 Gemini 3.6 Flash and Qwen3.5 Plus 2026-04-20
Benchmark	Gemini 3.6 Flash	Qwen3.5 Plus 2026-04-20	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 3.6 Flash$0.0026Fits in one request

Qwen3.5 Plus 2026-04-20$0.0012Fits in one request

Qwen3.5 Plus 2026-04-20 costs less

Repository review

50K input + 3K output tokens

Gemini 3.6 Flash$0.049Fits in one request

Qwen3.5 Plus 2026-04-20$0.020Fits in one request

Qwen3.5 Plus 2026-04-20 costs less

Agent loop

200K input + 10K output tokens

Gemini 3.6 Flash$0.188Fits in one request

Qwen3.5 Plus 2026-04-20$0.078Fits in one request

Qwen3.5 Plus 2026-04-20 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 3.6 Flash and Qwen3.5 Plus 2026-04-20
Specification	Google Gemini 3.6 Flash	Qwen3.5 Plus 2026-04-20
Maker	Google	Qwen
Weights	No public weights listed	No public weights listed
Released	July 21, 2026	April 27, 2026
Context window	1.05M	1M
Input $/Mtok	$0.75	$0.30
Output $/Mtok	$3.75	$1.80
Coding index	62.5	39.5
Independent measurements behind it	4	2
Cost per solved task	$1.49	$1.35
Source	OpenRouter listing	OpenRouter listing

Questions

Is Gemini 3.6 Flash better than Qwen3.5 Plus 2026-04-20 for coding?

Pick Gemini 3.6 Flash for coding: it scores 62.5 on the Vibe Coding Index against 39.5 for Qwen3.5 Plus 2026-04-20. Pick Qwen3.5 Plus 2026-04-20 for output tokens 2.1x cheaper ($1.80 vs $3.75 per million) and a lower cost per solved task ($1.35 against $1.49).

Which is cheaper, Gemini 3.6 Flash or Qwen3.5 Plus 2026-04-20?

Gemini 3.6 Flash costs $0.75 per million input tokens and $3.75 per million output tokens; Qwen3.5 Plus 2026-04-20 costs $0.30 and $1.80. Per solved SWE-bench Verified task, Gemini 3.6 Flash costs $1.49 and Qwen3.5 Plus 2026-04-20 $1.35.

Which has the bigger context window, Gemini 3.6 Flash or Qwen3.5 Plus 2026-04-20?

Gemini 3.6 Flash, with 1.05M tokens against 1M.

How many benchmarks is the Gemini 3.6 Flash vs Qwen3.5 Plus 2026-04-20 comparison based on?

19 benchmarks have a result for both models as of October 22, 2026. Gemini 3.6 Flash's coding index rests on 4 independent benchmarks and Qwen3.5 Plus 2026-04-20's on 2. Where only one model has a result, the page says so instead of naming a winner.

Compare next

Embed this comparison on your site

Free under CC BY 4.0, while the source link stays visible. Preview the frame · Terms and other embeds

<iframe src="https://llmbenchmark.ai/embed/compare/gemini-3-6-flash-vs-qwen3-5-plus-20260420" title="Gemini 3.6 Flash vs Qwen3.5 Plus 2026-04-20, 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-3-6-flash-vs-qwen3-5-plus-20260420">LLMBenchmark.ai, Gemini 3.6 Flash vs Qwen3.5 Plus 2026-04-20</a></p>

Gemini 3.6 Flash or Qwen3.5 Plus 2026-04-20: which to pick

Which one for your work

Coding

Intelligence

Agentic work

Reasoning

Math

Knowledge

Web design

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