Gemini 3.1 Flash Lite Preview vs Qwen3.5-Flash

Qwen3.5-Flash leads Gemini 3.1 Flash Lite Preview on coding, 41.1 to 22.7 on the Vibe Coding Index, and Qwen3.5-Flash costs 5.8x less per output token ($0.26 vs $1.50 per million). Updated October 22, 2026; 46 benchmarks have a result for both.

Replace Gemini 3.1 Flash Lite Preview Replace Qwen3.5-Flash

Gemini 3.1 Flash Lite PreviewGoogle

Coding: 22.7
Overall: 36.6
Output $/M: $1.50

Qwen3.5-FlashQwen

Coding: 41.1
Overall: 50.1
Output $/M: $0.26

vs boards won of 46 shared

Gemini 3.1 Flash Lite Preview or Qwen3.5-Flash: which to pick

Pick Qwen3.5-Flash for coding: it scores 41.1 on the Vibe Coding Index against 22.7 for Gemini 3.1 Flash Lite Preview, though on 2 benchmarks against 3.

Pick Gemini 3.1 Flash Lite Preview for a lower cost per solved task ($0.18 against $0.40) and a larger context window (1.05M against 1M tokens).

Model AGemini 3.1 Flash Lite PreviewGoogle22.7/1003 independent benchmarks$0.18 per solved task Model BQwen3.5-FlashQwen41.1/1002 independent benchmarks$0.40 per solved task

46339

Shared results: 46
Gemini 3.1 Flash Lite Preview only: 33
Qwen3.5-Flash only: 9
Like-for-like categories: 5 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
Qwen3.5-Flash
Qwen3.5-Flash scores 41.1 against 22.7.
3 and 2 benchmarks behind the scores
Intelligence
AA Intelligence Index
No call
Only Gemini 3.1 Flash Lite Preview has a AA Intelligence Index result, 15.6.
Directional only
Agentic work
AA Agentic Index
No call
Only Gemini 3.1 Flash Lite Preview has a AA Agentic Index result, 1.6.
Directional only
Reasoning
GPQA Diamond
Qwen3.5-Flash
Qwen3.5-Flash leads, 82.8% against 81.1%.
Same board, both measured
Math
AIME
Qwen3.5-Flash
Qwen3.5-Flash leads, 92.5% against 83.3%.
Same board, both measured
Knowledge
MMLU Pro
Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview leads, 86.2% against 84.1%.
Same board, both measured
Web design
Design Arena: websites
No call
Only Gemini 3.1 Flash Lite Preview has a Design Arena: websites result, 1082.
Directional only
Long documents
Listed context window
Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview takes 1.05M tokens against 1M.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Qwen3.5-Flash
Gemini 3.1 Flash Lite Preview $0.0010, Qwen3.5-Flash $0.0002 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview $0.18, Qwen3.5-Flash $0.40.
Published attempt cost and pass rate

At a glance

Coding index: Gemini 3.1 Flash Lite Preview 22.7 from 3 benchmarks, Qwen3.5-Flash 41.1 from 2 benchmarks.
Widest category: General, 5.2 points apart on average over 19 shared benchmarks.
Widest single gap: ALE-Bench: Gemini 3.1 Flash Lite Preview 797.7 against Qwen3.5-Flash 265.9, 17.7 points apart on a 0 to 100 scale.
Output price: Gemini 3.1 Flash Lite Preview $1.50 against Qwen3.5-Flash $0.26 per million output tokens, 5.8x apart.
Context window: Gemini 3.1 Flash Lite Preview takes 1.05M 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
Category	Gemini 3.1 Flash Lite Preview	Qwen3.5-Flash
Coding	3	5
Reasoning	2	3
Math	2	1
Knowledge	6	5
General	18	1
All shared boards	31	15

CodingLike-for-likeSix of these boards feed the Vibe Coding Index35

Coding benchmarks for Gemini 3.1 Flash Lite Preview and Qwen3.5-Flash
Benchmark	Gemini 3.1 Flash Lite Preview	Qwen3.5-Flash	Leader
LMArena WebDev	1257	1244	Gemini 3.1 Flash Lite Preview
AA Coding Index	34.7	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LiveCodeBench (Vals AI)	80.1%	83.3%	Qwen3.5-Flash
SWE-bench Verified (Vals AI)	62.8%	64.4%	Qwen3.5-Flash
Vibe Code Bench (Vals AI)	0.0%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Code migration (Vals AI)	4.6%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
ProgramBench (Vals AI)	0.0%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Terminal-Bench 2.1 (Vals AI)	34.1%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
ALE-Bench	797.7	265.9	Gemini 3.1 Flash Lite Preview
LMArena Text: coding	1400	1412	Qwen3.5-Flash
LMArena Text: software and IT	1413	1416	Qwen3.5-Flash
LMArena WebDev: React	1245	1229	Gemini 3.1 Flash Lite Preview
LMArena WebDev: HTML	1276	1291	Qwen3.5-Flash
LMArena WebDev: from an image	1336	Not measured	Only Gemini 3.1 Flash Lite Preview measured
SciCode	4.6%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 24 boards here

IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index2 boards, none shared

Intelligence benchmarks for Gemini 3.1 Flash Lite Preview and Qwen3.5-Flash
Benchmark	Gemini 3.1 Flash Lite Preview	Qwen3.5-Flash	Leader
AA Intelligence Index	15.6	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Epoch Capabilities Index	Not measured	143.5	Only Qwen3.5-Flash measured

Agentic workDirectional onlyPublic boards, shown as published, kept out of the index5 boards, none shared

Agentic work benchmarks for Gemini 3.1 Flash Lite Preview and Qwen3.5-Flash
Benchmark	Gemini 3.1 Flash Lite Preview	Qwen3.5-Flash	Leader
AA Agentic Index	1.6	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Finance Agent (Vals AI)	30.0%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Tax Agent Bench (Vals AI)	3.1%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Legal Research Bench (Vals AI)	3.4%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Excel Modeling Benchmark (Vals AI)	8.6%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 36 boards here

ReasoningLike-for-likePublic boards, shown as published, kept out of the index23

Reasoning benchmarks for Gemini 3.1 Flash Lite Preview and Qwen3.5-Flash
Benchmark	Gemini 3.1 Flash Lite Preview	Qwen3.5-Flash	Leader
GPQA Diamond	81.1%	82.8%	Qwen3.5-Flash
MMMU Pro (Vals AI)	82.5%	81.9%	Gemini 3.1 Flash Lite Preview
GPQA Diamond (Epoch AI run)	Not measured	82.3%	Only Qwen3.5-Flash measured
Chess puzzles	Not measured	14.0%	Only Qwen3.5-Flash measured
Mystery game puzzles	Not measured	20.0%	Only Qwen3.5-Flash measured
LMArena Text: hard prompts	1407	1403	Gemini 3.1 Flash Lite Preview
LMArena Text: expert	1398	1407	Qwen3.5-Flash
LMArena Text: hard prompts in English	1403	1409	Qwen3.5-Flash
LMArena Vision: diagrams	1242	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: homework	1271	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 12 boards here

MathLike-for-likePublic boards, shown as published, kept out of the index21

Math benchmarks for Gemini 3.1 Flash Lite Preview and Qwen3.5-Flash
Benchmark	Gemini 3.1 Flash Lite Preview	Qwen3.5-Flash	Leader
AIME	83.3%	92.5%	Qwen3.5-Flash
OTIS Mock AIME	Not measured	84.4%	Only Qwen3.5-Flash measured
FrontierMath, tiers 1 to 3	Not measured	18.2%	Only Qwen3.5-Flash measured
LMArena Text: math	1428	1407	Gemini 3.1 Flash Lite Preview
LMArena Text: mathematical work	1417	1413	Gemini 3.1 Flash Lite Preview
Neither model has a result on the other 8 boards here

KnowledgeLike-for-likePublic boards, shown as published, kept out of the index65

Knowledge benchmarks for Gemini 3.1 Flash Lite Preview and Qwen3.5-Flash
Benchmark	Gemini 3.1 Flash Lite Preview	Qwen3.5-Flash	Leader
MMLU Pro	86.2%	84.1%	Gemini 3.1 Flash Lite Preview
LegalBench (Vals AI)	83.8%	84.3%	Qwen3.5-Flash
CaseLaw (Vals AI)	55.0%	56.0%	Qwen3.5-Flash
CorpFin (Vals AI)	59.4%	63.6%	Qwen3.5-Flash
TaxEval (Vals AI)	71.8%	72.2%	Qwen3.5-Flash
MortgageTax (Vals AI)	68.0%	67.4%	Gemini 3.1 Flash Lite Preview
MedCode (Vals AI)	47.6%	33.0%	Gemini 3.1 Flash Lite Preview
SimpleQA Verified	Not measured	20.3%	Only Qwen3.5-Flash measured
LMArena Text: science	1425	1415	Gemini 3.1 Flash Lite Preview
LMArena Text: medicine and healthcare	1428	1407	Gemini 3.1 Flash Lite Preview
LMArena Text: legal and government	1418	1398	Gemini 3.1 Flash Lite Preview
LMArena Text: business and finance	1389	1394	Qwen3.5-Flash
FACTS Benchmark Suite	51.4%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 5 boards here

Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared

Web design benchmarks for Gemini 3.1 Flash Lite Preview and Qwen3.5-Flash
Benchmark	Gemini 3.1 Flash Lite Preview	Qwen3.5-Flash	Leader
Design Arena: websites	1082	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Design Arena: UI components	1069	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Design Arena: game dev	1029	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Design Arena: data viz	1045	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Design Arena: 3D	1047	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Design Arena: all code categories	1072	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Design Arena: SVG	1052	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Design Arena: ASCII art	1167	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 1 board here

GeneralLike-for-likePublic boards, shown as published, kept out of the index181

General benchmarks for Gemini 3.1 Flash Lite Preview and Qwen3.5-Flash
Benchmark	Gemini 3.1 Flash Lite Preview	Qwen3.5-Flash	Leader
SAGE (Vals AI)	49.5%	42.5%	Gemini 3.1 Flash Lite Preview
MedScribe (Vals AI)	63.9%	70.6%	Qwen3.5-Flash
Vals Multimodal Index	41.4%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
DTBench	Not measured	82.9%	Only Qwen3.5-Flash measured
LMCA	Not measured	29.1%	Only Qwen3.5-Flash measured
LMArena Text	1416	1397	Gemini 3.1 Flash Lite Preview
LMArena Text: instruction following	1377	1374	Gemini 3.1 Flash Lite Preview
LMArena Text: creative writing	1401	1343	Gemini 3.1 Flash Lite Preview
LMArena Vision	1240	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: English	1414	1404	Gemini 3.1 Flash Lite Preview
LMArena Text: non-English	1410	1385	Gemini 3.1 Flash Lite Preview
LMArena Text: Chinese	1460	1445	Gemini 3.1 Flash Lite Preview
LMArena Text: German	1430	1390	Gemini 3.1 Flash Lite Preview
LMArena Text: Japanese	1413	1369	Gemini 3.1 Flash Lite Preview
LMArena Text: Korean	1392	1344	Gemini 3.1 Flash Lite Preview
LMArena Text: French	1424	1413	Gemini 3.1 Flash Lite Preview
LMArena Text: Spanish	1421	1400	Gemini 3.1 Flash Lite Preview
LMArena Text: Russian	1420	1380	Gemini 3.1 Flash Lite Preview
LMArena Text: Polish	1443	1376	Gemini 3.1 Flash Lite Preview
LMArena Text: multi-turn	1417	1393	Gemini 3.1 Flash Lite Preview
LMArena Text: longer queries	1394	1392	Gemini 3.1 Flash Lite Preview
LMArena Text: writing and language	1408	1369	Gemini 3.1 Flash Lite Preview
LMArena Text: entertainment and media	1386	1347	Gemini 3.1 Flash Lite Preview
LMArena Vision: English	1232	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: Chinese	1278	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: reading text	1246	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: humor	1266	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: captioning	1259	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: recognizing things	1308	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: creative writing	1248	Not measured	Only Gemini 3.1 Flash Lite Preview 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 Gemini 3.1 Flash Lite Preview and Qwen3.5-Flash
Benchmark	Gemini 3.1 Flash Lite Preview	Qwen3.5-Flash	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 3.1 Flash Lite Preview$0.0010Fits in one request

Qwen3.5-Flash$0.0002Fits in one request

Qwen3.5-Flash costs less

Repository review

50K input + 3K output tokens

Gemini 3.1 Flash Lite Preview$0.017Fits in one request

Qwen3.5-Flash$0.0040Fits in one request

Qwen3.5-Flash costs less

Agent loop

200K input + 10K output tokens

Gemini 3.1 Flash Lite Preview$0.065Fits 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 Gemini 3.1 Flash Lite Preview and Qwen3.5-Flash
Specification	Google Gemini 3.1 Flash Lite Preview	Qwen3.5-Flash
Maker	Google	Qwen
Weights	No public weights listed	No public weights listed
Released	March 3, 2026	February 25, 2026
Context window	1.05M	1M
Input $/Mtok	$0.25	$0.065
Output $/Mtok	$1.50	$0.26
Coding index	22.7	41.1
Independent measurements behind it	3	2
Cost per solved task	$0.18	$0.40
Source	OpenRouter listing	OpenRouter listing

Questions

Is Gemini 3.1 Flash Lite Preview better than Qwen3.5-Flash for coding?

Pick Qwen3.5-Flash for coding: it scores 41.1 on the Vibe Coding Index against 22.7 for Gemini 3.1 Flash Lite Preview, though on 2 benchmarks against 3. Pick Gemini 3.1 Flash Lite Preview for a lower cost per solved task ($0.18 against $0.40) and a larger context window (1.05M against 1M tokens).

Which is cheaper, Gemini 3.1 Flash Lite Preview or Qwen3.5-Flash?

Gemini 3.1 Flash Lite Preview costs $0.25 per million input tokens and $1.50 per million output tokens; Qwen3.5-Flash costs $0.065 and $0.26. Per solved SWE-bench Verified task, Gemini 3.1 Flash Lite Preview costs $0.18 and Qwen3.5-Flash $0.40.

Which has the bigger context window, Gemini 3.1 Flash Lite Preview or Qwen3.5-Flash?

Gemini 3.1 Flash Lite Preview, with 1.05M tokens against 1M.

How many benchmarks is the Gemini 3.1 Flash Lite Preview vs Qwen3.5-Flash comparison based on?

46 benchmarks have a result for both models as of October 22, 2026. Gemini 3.1 Flash Lite Preview'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/gemini-3-1-flash-lite-preview-vs-qwen3-5-flash-02-23" title="Gemini 3.1 Flash Lite Preview 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/gemini-3-1-flash-lite-preview-vs-qwen3-5-flash-02-23">LLMBenchmark.ai, Gemini 3.1 Flash Lite Preview vs Qwen3.5-Flash</a></p>

Gemini 3.1 Flash Lite Preview or Qwen3.5-Flash: 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

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