Gemini 3.1 Flash Lite Preview vs Gemma 4 31B

Gemma 4 31B leads Gemini 3.1 Flash Lite Preview on coding, 39.0 to 22.7 on the Vibe Coding Index, and Gemma 4 31B costs 3.8x less per output token ($0.40 vs $1.50 per million). Updated October 22, 2026; 47 benchmarks have a result for both.

Replace Gemini 3.1 Flash Lite Preview Replace Gemma 4 31B

Gemini 3.1 Flash Lite PreviewGoogle

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

Gemma 4 31BGoogle

Coding: 39.0
Overall: 42.1
Output $/M: $0.40

vs boards won of 47 shared

Gemini 3.1 Flash Lite Preview or Gemma 4 31B: which to pick

Pick Gemma 4 31B for coding: it scores 39.0 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 larger context window (1.05M against 262K tokens) and work measured by AA Intelligence Index or CaseLaw (Vals AI), where it leads.

Model AGemini 3.1 Flash Lite PreviewGoogle22.7/1003 independent benchmarks$0.18 per solved task Model BGemma 4 31BGoogle39.0/1002 independent benchmarksNo cost per solved task

473224

Shared results: 47
Gemini 3.1 Flash Lite Preview only: 32
Gemma 4 31B only: 24
Like-for-like categories: 7 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
Gemma 4 31B
Gemma 4 31B scores 39.0 against 22.7.
3 and 2 benchmarks behind the scores
Intelligence
AA Intelligence Index
Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview leads, 15.6 against 14.7.
Same board, both measured
Agentic work
AA Agentic Index
Gemma 4 31B
Gemma 4 31B leads, 4.2 against 1.6.
Same board, both measured
Reasoning
GPQA Diamond
No call
Only Gemini 3.1 Flash Lite Preview has a GPQA Diamond result, 81.1%.
Directional only
Math
AIME
No call
Only Gemini 3.1 Flash Lite Preview has a AIME result, 83.3%.
Directional only
Knowledge
MMLU Pro
No call
Only Gemini 3.1 Flash Lite Preview has a MMLU Pro result, 86.2%.
Directional only
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 262K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Gemma 4 31B
Gemini 3.1 Flash Lite Preview $0.0010, Gemma 4 31B $0.0003 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
No call
Only Gemini 3.1 Flash Lite Preview has the number, $0.18.
Directional only

At a glance

Coding index: Gemini 3.1 Flash Lite Preview 22.7 from 3 benchmarks, Gemma 4 31B 39.0 from 2 benchmarks.
Widest category: Coding, 11.0 points apart on average over 8 shared benchmarks.
Widest single gap: LMArena WebDev: React: Gemini 3.1 Flash Lite Preview 1245 against Gemma 4 31B 1359, 19.1 points apart on a 0 to 100 scale.
Output price: Gemini 3.1 Flash Lite Preview $1.50 against Gemma 4 31B $0.40 per million output tokens, 3.8x apart.
Context window: Gemini 3.1 Flash Lite Preview takes 1.05M tokens, Gemma 4 31B 262K.

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	Gemma 4 31B
Coding	0	8
Intelligence	1	0
Agentic work	0	1
Reasoning	0	5
Math	0	2
Knowledge	3	4
General	3	20
All shared boards	7	40

CodingLike-for-likeSix of these boards feed the Vibe Coding Index08

Coding benchmarks for Gemini 3.1 Flash Lite Preview and Gemma 4 31B
Benchmark	Gemini 3.1 Flash Lite Preview	Gemma 4 31B	Leader
LiveBench coding	Not measured	49.0%	Only Gemma 4 31B measured
LMArena WebDev	1257	1367	Gemma 4 31B
AA Coding Index	34.7	43.4	Gemma 4 31B
LiveCodeBench (Vals AI)	80.1%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
SWE-bench Verified (Vals AI)	62.8%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
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
SciCode	Not measured	45.5%	Only Gemma 4 31B measured
Terminal-Bench Hard (Artificial Analysis run)	Not measured	36.4%	Only Gemma 4 31B measured
WeirdML	Not measured	52.3%	Only Gemma 4 31B measured
ALE-Bench	797.7	925.5	Gemma 4 31B
LMArena Text: coding	1400	1459	Gemma 4 31B
LMArena Text: software and IT	1413	1463	Gemma 4 31B
LMArena WebDev: React	1245	1359	Gemma 4 31B
LMArena WebDev: HTML	1276	1380	Gemma 4 31B
LMArena WebDev: from an image	1336	Not measured	Only Gemini 3.1 Flash Lite Preview measured
SciCode	4.6%	8.9%	Gemma 4 31B
Neither model has a result on the other 20 boards here

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

Intelligence benchmarks for Gemini 3.1 Flash Lite Preview and Gemma 4 31B
Benchmark	Gemini 3.1 Flash Lite Preview	Gemma 4 31B	Leader
AA Intelligence Index	15.6	14.7	Gemini 3.1 Flash Lite Preview
Epoch Capabilities Index	Not measured	143.0	Only Gemma 4 31B measured

Agentic workLike-for-likePublic boards, shown as published, kept out of the index01

Agentic work benchmarks for Gemini 3.1 Flash Lite Preview and Gemma 4 31B
Benchmark	Gemini 3.1 Flash Lite Preview	Gemma 4 31B	Leader
AA Agentic Index	1.6	4.2	Gemma 4 31B
LiveBench research	Not measured	44.4%	Only Gemma 4 31B measured
LiveBench browser	Not measured	4.0%	Only Gemma 4 31B measured
LiveBench long agentic	Not measured	13.3%	Only Gemma 4 31B 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
τ²-Bench Telecom	Not measured	65.5%	Only Gemma 4 31B measured
Neither model has a result on the other 32 boards here

ReasoningLike-for-likePublic boards, shown as published, kept out of the index05

Reasoning benchmarks for Gemini 3.1 Flash Lite Preview and Gemma 4 31B
Benchmark	Gemini 3.1 Flash Lite Preview	Gemma 4 31B	Leader
GPQA Diamond	81.1%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LiveBench reasoning	Not measured	68.3%	Only Gemma 4 31B measured
MMMU Pro (Vals AI)	82.5%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
GPQA Diamond (Artificial Analysis run)	Not measured	85.7%	Only Gemma 4 31B measured
Humanity's Last Exam (Artificial Analysis run)	Not measured	23.6%	Only Gemma 4 31B measured
GPQA Diamond (Epoch AI run)	Not measured	75.8%	Only Gemma 4 31B measured
LMArena Text: hard prompts	1407	1448	Gemma 4 31B
LMArena Text: expert	1398	1464	Gemma 4 31B
LMArena Text: hard prompts in English	1403	1456	Gemma 4 31B
LMArena Vision: diagrams	1242	1283	Gemma 4 31B
LMArena Vision: homework	1271	1310	Gemma 4 31B
Kagi LLM Benchmark	Not measured	63.5%	Only Gemma 4 31B measured
Neither model has a result on the other 10 boards here

MathLike-for-likePublic boards, shown as published, kept out of the index02

Math benchmarks for Gemini 3.1 Flash Lite Preview and Gemma 4 31B
Benchmark	Gemini 3.1 Flash Lite Preview	Gemma 4 31B	Leader
AIME	83.3%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
OTIS Mock AIME	Not measured	73.3%	Only Gemma 4 31B measured
LMArena Text: math	1428	1463	Gemma 4 31B
LMArena Text: mathematical work	1417	1465	Gemma 4 31B
Neither model has a result on the other 9 boards here

KnowledgeLike-for-likePublic boards, shown as published, kept out of the index34

Knowledge benchmarks for Gemini 3.1 Flash Lite Preview and Gemma 4 31B
Benchmark	Gemini 3.1 Flash Lite Preview	Gemma 4 31B	Leader
MMLU Pro	86.2%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LegalBench (Vals AI)	83.8%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
CaseLaw (Vals AI)	55.0%	52.6%	Gemini 3.1 Flash Lite Preview
CorpFin (Vals AI)	59.4%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
TaxEval (Vals AI)	71.8%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
MortgageTax (Vals AI)	68.0%	61.4%	Gemini 3.1 Flash Lite Preview
MedCode (Vals AI)	47.6%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
SimpleQA Verified	Not measured	10.4%	Only Gemma 4 31B measured
LMArena Text: science	1425	1457	Gemma 4 31B
LMArena Text: medicine and healthcare	1428	1451	Gemma 4 31B
LMArena Text: legal and government	1418	1438	Gemma 4 31B
LMArena Text: business and finance	1389	1430	Gemma 4 31B
FACTS Benchmark Suite	51.4%	45.3%	Gemini 3.1 Flash Lite Preview
Neither model has a result on the other 5 boards here

Web designDirectional onlyPublic boards, shown as published, kept out of the index9 boards, none shared

Web design benchmarks for Gemini 3.1 Flash Lite Preview and Gemma 4 31B
Benchmark	Gemini 3.1 Flash Lite Preview	Gemma 4 31B	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
LiveBench design	Not measured	58.4%	Only Gemma 4 31B measured

GeneralLike-for-likePublic boards, shown as published, kept out of the index320

General benchmarks for Gemini 3.1 Flash Lite Preview and Gemma 4 31B
Benchmark	Gemini 3.1 Flash Lite Preview	Gemma 4 31B	Leader
LiveBench data analysis	Not measured	53.3%	Only Gemma 4 31B measured
SAGE (Vals AI)	49.5%	55.0%	Gemma 4 31B
MedScribe (Vals AI)	63.9%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Vals Multimodal Index	41.4%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
IFBench	Not measured	75.6%	Only Gemma 4 31B measured
Long context reasoning (AA-LCR)	Not measured	69.7%	Only Gemma 4 31B measured
DTBench	Not measured	82.7%	Only Gemma 4 31B measured
LMCA	Not measured	39.3%	Only Gemma 4 31B measured
Surface Evolver Bench	Not measured	30.6%	Only Gemma 4 31B measured
LMArena Text	1416	1443	Gemma 4 31B
LMArena Text: instruction following	1377	1433	Gemma 4 31B
LMArena Text: creative writing	1401	1417	Gemma 4 31B
LMArena Vision	1240	1276	Gemma 4 31B
LMArena Text: English	1414	1451	Gemma 4 31B
LMArena Text: non-English	1410	1430	Gemma 4 31B
LMArena Text: Chinese	1460	1475	Gemma 4 31B
LMArena Text: German	1430	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: Japanese	1413	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: Korean	1392	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: French	1424	1436	Gemma 4 31B
LMArena Text: Spanish	1421	1442	Gemma 4 31B
LMArena Text: Russian	1420	1460	Gemma 4 31B
LMArena Text: Polish	1443	1433	Gemini 3.1 Flash Lite Preview
LMArena Text: multi-turn	1417	1452	Gemma 4 31B
LMArena Text: longer queries	1394	1446	Gemma 4 31B
LMArena Text: writing and language	1408	1432	Gemma 4 31B
LMArena Text: entertainment and media	1386	1405	Gemma 4 31B
LMArena Vision: English	1232	1271	Gemma 4 31B
LMArena Vision: Chinese	1278	1326	Gemma 4 31B
LMArena Vision: reading text	1246	1282	Gemma 4 31B
LMArena Vision: humor	1266	1280	Gemma 4 31B
LMArena Vision: captioning	1259	1218	Gemini 3.1 Flash Lite Preview
LMArena Vision: recognizing things	1308	1226	Gemini 3.1 Flash Lite Preview
LMArena Vision: creative writing	1248	1285	Gemma 4 31B
LMArena Document	Not measured	1425	Only Gemma 4 31B measured
Neither model has a result on the other 11 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 Gemma 4 31B
Benchmark	Gemini 3.1 Flash Lite Preview	Gemma 4 31B	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

Gemma 4 31B$0.0003Fits in one request

Gemma 4 31B costs less

Repository review

50K input + 3K output tokens

Gemini 3.1 Flash Lite Preview$0.017Fits in one request

Gemma 4 31B$0.0082Fits in one request

Gemma 4 31B costs less

Agent loop

200K input + 10K output tokens

Gemini 3.1 Flash Lite Preview$0.065Fits in one request

Gemma 4 31B$0.032Fits in one request

Gemma 4 31B 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 Gemma 4 31B
Specification	Google Gemini 3.1 Flash Lite Preview	Google Gemma 4 31B
Maker	Google	Google
Weights	No public weights listed	Open weights
Released	March 3, 2026	April 2, 2026
Context window	1.05M	262K
Input $/Mtok	$0.25	$0.14
Output $/Mtok	$1.50	$0.40
Coding index	22.7	39.0
Independent measurements behind it	3	2
Cost per solved task	$0.18	Not computable
Source	OpenRouter listing	OpenRouter listing

Questions

Is Gemini 3.1 Flash Lite Preview better than Gemma 4 31B for coding?

Pick Gemma 4 31B for coding: it scores 39.0 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 larger context window (1.05M against 262K tokens) and work measured by AA Intelligence Index or CaseLaw (Vals AI), where it leads.

Which is cheaper, Gemini 3.1 Flash Lite Preview or Gemma 4 31B?

Gemini 3.1 Flash Lite Preview costs $0.25 per million input tokens and $1.50 per million output tokens; Gemma 4 31B costs $0.14 and $0.40. Cost per solved task is known for Gemini 3.1 Flash Lite Preview only.

Which has the bigger context window, Gemini 3.1 Flash Lite Preview or Gemma 4 31B?

Gemini 3.1 Flash Lite Preview, with 1.05M tokens against 262K.

How many benchmarks is the Gemini 3.1 Flash Lite Preview vs Gemma 4 31B comparison based on?

47 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 Gemma 4 31B'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-gemma-4-31b-it" title="Gemini 3.1 Flash Lite Preview vs Gemma 4 31B, 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-gemma-4-31b-it">LLMBenchmark.ai, Gemini 3.1 Flash Lite Preview vs Gemma 4 31B</a></p>

Gemini 3.1 Flash Lite Preview or Gemma 4 31B: 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