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Gemini 3.5 Flash Lite vs Gemma 4 31B

Gemini 3.5 Flash Lite leads Gemma 4 31B on coding, 49.0 to 39.0 on the Vibe Coding Index, and Gemma 4 31B costs 6.3x less per output token ($0.40 vs $2.50 per million). Updated October 22, 2026; 53 benchmarks have a result for both.

Replace Gemini 3.5 Flash Lite Replace Gemma 4 31B
Gemini 3.5 Flash LiteGoogle
Coding
49.0
Overall
49.8
Output $/M
$2.50
17
Gemma 4 31BGoogle
Coding
39.0
Overall
42.1
Output $/M
$0.40
36
vs boards won of 53 shared

Gemini 3.5 Flash Lite or Gemma 4 31B: which to pick

Pick Gemini 3.5 Flash Lite for coding: it scores 49.0 on the Vibe Coding Index against 39.0 for Gemma 4 31B.

Pick Gemma 4 31B for output tokens 6.3x cheaper ($0.40 vs $2.50 per million) and work measured by SciCode or WeirdML, where it leads.

Model AGemini 3.5 Flash LiteGoogle49.0/1003 independent benchmarks$0.41 per solved taskModel BGemma 4 31BGoogle39.0/1002 independent benchmarksNo cost per solved task
Shared results
53
Gemini 3.5 Flash Lite only
32
Gemma 4 31B only
18
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.

At a glance

Coding index
Gemini 3.5 Flash Lite 49.0 from 3 benchmarks, Gemma 4 31B 39.0 from 2 benchmarks.
Widest category
Agentic work, 10.1 points apart on average over 1 shared benchmark.
Widest single gap
WeirdML: Gemini 3.5 Flash Lite 39.0% against Gemma 4 31B 52.3%, 13.3 points apart on a 0 to 100 scale.
Output price
Gemini 3.5 Flash Lite $2.50 against Gemma 4 31B $0.40 per million output tokens, 6.3x apart.
Context window
Gemini 3.5 Flash Lite 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
CategoryGemini 3.5 Flash LiteBarsGemma 4 31BTies
Coding36
Intelligence20
Agentic work10
Reasoning26
Math03
Knowledge24
General717
All shared boards1736
CodingLike-for-likeSix of these boards feed the Vibe Coding Index36
Coding benchmarks for Gemini 3.5 Flash Lite and Gemma 4 31B
BenchmarkGemini 3.5 Flash LiteGemma 4 31BLeader
LiveBench codingNot measured49.0%Only Gemma 4 31B measured
LMArena WebDev14351367Gemini 3.5 Flash Lite
AA Coding Index49.343.4Gemini 3.5 Flash Lite
LiveCodeBench (Vals AI)79.0%Not measuredOnly Gemini 3.5 Flash Lite measured
SWE-bench Verified (Vals AI)75.0%Not measuredOnly Gemini 3.5 Flash Lite measured
Vibe Code Bench (Vals AI)37.2%Not measuredOnly Gemini 3.5 Flash Lite measured
Code migration (Vals AI)6.2%Not measuredOnly Gemini 3.5 Flash Lite measured
ProgramBench (Vals AI)0.0%Not measuredOnly Gemini 3.5 Flash Lite measured
Terminal-Bench 2.1 (Vals AI)50.2%Not measuredOnly Gemini 3.5 Flash Lite measured
CyberBench (Vals AI)59.1%Not measuredOnly Gemini 3.5 Flash Lite measured
SciCode41.3%45.5%Gemma 4 31B
Terminal-Bench Hard (Artificial Analysis run)Not measured36.4%Only Gemma 4 31B measured
WeirdML39.0%52.3%Gemma 4 31B
ALE-Bench765.3925.5Gemma 4 31B
LMArena Text: coding14531459Gemma 4 31B
LMArena Text: software and IT14511463Gemma 4 31B
LMArena WebDev: React14081359Gemini 3.5 Flash Lite
LMArena WebDev: HTMLNot measured1380Only Gemma 4 31B measured
LMArena WebDev: from an image1448Not measuredOnly Gemini 3.5 Flash Lite measured
SciCode6.2%8.9%Gemma 4 31B
Neither model has a result on the other 19 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for Gemini 3.5 Flash Lite and Gemma 4 31B
BenchmarkGemini 3.5 Flash LiteGemma 4 31BLeader
AA Intelligence Index22.214.7Gemini 3.5 Flash Lite
Epoch Capabilities Index144.9143.0Gemini 3.5 Flash Lite
Agentic workLike-for-likePublic boards, shown as published, kept out of the index10
Agentic work benchmarks for Gemini 3.5 Flash Lite and Gemma 4 31B
BenchmarkGemini 3.5 Flash LiteGemma 4 31BLeader
AA Agentic Index14.34.2Gemini 3.5 Flash Lite
LiveBench researchNot measured44.4%Only Gemma 4 31B measured
LiveBench browserNot measured4.0%Only Gemma 4 31B measured
LiveBench long agenticNot measured13.3%Only Gemma 4 31B measured
Finance Agent (Vals AI)47.4%Not measuredOnly Gemini 3.5 Flash Lite measured
Tax Agent Bench (Vals AI)7.2%Not measuredOnly Gemini 3.5 Flash Lite measured
Legal Research Bench (Vals AI)13.9%Not measuredOnly Gemini 3.5 Flash Lite measured
Excel Modeling Benchmark (Vals AI)43.2%Not measuredOnly Gemini 3.5 Flash Lite measured
τ²-Bench TelecomNot measured65.5%Only Gemma 4 31B measured
APEX-Agents29.3%Not measuredOnly Gemini 3.5 Flash Lite measured
Neither model has a result on the other 31 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index26
Reasoning benchmarks for Gemini 3.5 Flash Lite and Gemma 4 31B
BenchmarkGemini 3.5 Flash LiteGemma 4 31BLeader
GPQA Diamond83.8%Not measuredOnly Gemini 3.5 Flash Lite measured
LiveBench reasoningNot measured68.3%Only Gemma 4 31B measured
MMMU Pro (Vals AI)83.6%Not measuredOnly Gemini 3.5 Flash Lite measured
GPQA Diamond (Artificial Analysis run)83.8%85.7%Gemma 4 31B
Humanity's Last Exam (Artificial Analysis run)18.8%23.6%Gemma 4 31B
GPQA Diamond (Epoch AI run)83.3%75.8%Gemini 3.5 Flash Lite
ARC-AGI53.5%Not measuredOnly Gemini 3.5 Flash Lite measured
ARC-AGI-210.3%Not measuredOnly Gemini 3.5 Flash Lite measured
Chess puzzles21.0%Not measuredOnly Gemini 3.5 Flash Lite measured
Mystery game puzzles19.0%Not measuredOnly Gemini 3.5 Flash Lite measured
LMArena Text: hard prompts14411448Gemma 4 31B
LMArena Text: expert14341464Gemma 4 31B
LMArena Text: hard prompts in English14401456Gemma 4 31B
LMArena Vision: diagrams12841283Gemini 3.5 Flash Lite
LMArena Vision: homework12911310Gemma 4 31B
Kagi LLM BenchmarkNot measured63.5%Only Gemma 4 31B measured
Neither model has a result on the other 6 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index03
Math benchmarks for Gemini 3.5 Flash Lite and Gemma 4 31B
BenchmarkGemini 3.5 Flash LiteGemma 4 31BLeader
OTIS Mock AIME71.1%73.3%Gemma 4 31B
FrontierMath, tiers 1 to 326.0%Not measuredOnly Gemini 3.5 Flash Lite measured
FrontierMath, tier 40.0%Not measuredOnly Gemini 3.5 Flash Lite measured
ProofBench13.0%Not measuredOnly Gemini 3.5 Flash Lite measured
LMArena Text: math14341463Gemma 4 31B
LMArena Text: mathematical work14331465Gemma 4 31B
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index24
Knowledge benchmarks for Gemini 3.5 Flash Lite and Gemma 4 31B
BenchmarkGemini 3.5 Flash LiteGemma 4 31BLeader
MMLU Pro85.8%Not measuredOnly Gemini 3.5 Flash Lite measured
LegalBench (Vals AI)84.1%Not measuredOnly Gemini 3.5 Flash Lite measured
CaseLaw (Vals AI)Not measured52.6%Only Gemma 4 31B measured
CorpFin (Vals AI)60.7%Not measuredOnly Gemini 3.5 Flash Lite measured
TaxEval (Vals AI)72.6%Not measuredOnly Gemini 3.5 Flash Lite measured
MortgageTax (Vals AI)68.7%61.4%Gemini 3.5 Flash Lite
MedCode (Vals AI)43.5%Not measuredOnly Gemini 3.5 Flash Lite measured
SimpleQA VerifiedNot measured10.4%Only Gemma 4 31B measured
LMArena Text: science14511457Gemma 4 31B
LMArena Text: medicine and healthcare14381451Gemma 4 31B
LMArena Text: legal and government14311438Gemma 4 31B
LMArena Text: business and finance14231430Gemma 4 31B
FACTS Benchmark Suite53.5%45.3%Gemini 3.5 Flash Lite
Neither model has a result on the other 5 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index1 board, none shared
Web design benchmarks for Gemini 3.5 Flash Lite and Gemma 4 31B
BenchmarkGemini 3.5 Flash LiteGemma 4 31BLeader
LiveBench designNot measured58.4%Only Gemma 4 31B measured
Neither model has a result on the other 8 boards here
GeneralLike-for-likePublic boards, shown as published, kept out of the index717
General benchmarks for Gemini 3.5 Flash Lite and Gemma 4 31B
BenchmarkGemini 3.5 Flash LiteGemma 4 31BLeader
LiveBench data analysisNot measured53.3%Only Gemma 4 31B measured
Public Benefits Bench (Vals AI)51.8%Not measuredOnly Gemini 3.5 Flash Lite measured
SAGE (Vals AI)47.3%55.0%Gemma 4 31B
MedScribe (Vals AI)70.9%Not measuredOnly Gemini 3.5 Flash Lite measured
IFBenchNot measured75.6%Only Gemma 4 31B measured
Long context reasoning (AA-LCR)76.0%69.7%Gemini 3.5 Flash Lite
DTBench83.5%82.7%Gemini 3.5 Flash Lite
LMCA37.6%39.3%Gemma 4 31B
Surface Evolver BenchNot measured30.6%Only Gemma 4 31B measured
LMArena Text14351443Gemma 4 31B
LMArena Text: instruction following14191433Gemma 4 31B
LMArena Text: creative writing14211417Gemini 3.5 Flash Lite
LMArena Vision12691276Gemma 4 31B
LMArena Text: English14381451Gemma 4 31B
LMArena Text: non-English14271430Gemma 4 31B
LMArena Text: Chinese14681475Gemma 4 31B
LMArena Text: German1454Not measuredOnly Gemini 3.5 Flash Lite measured
LMArena Text: Japanese1426Not measuredOnly Gemini 3.5 Flash Lite measured
LMArena Text: Korean1407Not measuredOnly Gemini 3.5 Flash Lite measured
LMArena Text: French14511436Gemini 3.5 Flash Lite
LMArena Text: Spanish14411442Gemma 4 31B
LMArena Text: Russian14431460Gemma 4 31B
LMArena Text: Polish14371433Gemini 3.5 Flash Lite
LMArena Text: multi-turn14451452Gemma 4 31B
LMArena Text: longer queries14351446Gemma 4 31B
LMArena Text: writing and language14281432Gemma 4 31B
LMArena Text: entertainment and media14141405Gemini 3.5 Flash Lite
LMArena Vision: English12691271Gemma 4 31B
LMArena Vision: Chinese13111326Gemma 4 31B
LMArena Vision: reading text12801282Gemma 4 31B
LMArena Vision: humor12871280Gemini 3.5 Flash Lite
LMArena Vision: captioningNot measured1218Only Gemma 4 31B measured
LMArena Vision: recognizing thingsNot measured1226Only Gemma 4 31B measured
LMArena Vision: creative writing12601285Gemma 4 31B
LMArena DocumentNot measured1425Only 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 3.5 Flash Lite and Gemma 4 31B
BenchmarkGemini 3.5 Flash LiteGemma 4 31BLeader
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 3.5 Flash Lite$0.0015Fits in one request
Gemma 4 31B$0.0003Fits in one request

Gemma 4 31B costs less

Repository review

50K input + 3K output tokens

Gemini 3.5 Flash Lite$0.022Fits in one request
Gemma 4 31B$0.0082Fits in one request

Gemma 4 31B costs less

Agent loop

200K input + 10K output tokens

Gemini 3.5 Flash Lite$0.085Fits 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 3.5 Flash Lite and Gemma 4 31B
SpecificationGoogle Gemini 3.5 Flash LiteGoogle Gemma 4 31B
MakerGoogleGoogle
WeightsNo public weights listedOpen weights
ReleasedJuly 21, 2026April 2, 2026
Context window1.05M262K
Input $/Mtok$0.30$0.14
Output $/Mtok$2.50$0.40
Coding index49.039.0
Independent measurements behind it32
Cost per solved task$0.41Not computable
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemini 3.5 Flash Lite better than Gemma 4 31B for coding?

Pick Gemini 3.5 Flash Lite for coding: it scores 49.0 on the Vibe Coding Index against 39.0 for Gemma 4 31B. Pick Gemma 4 31B for output tokens 6.3x cheaper ($0.40 vs $2.50 per million) and work measured by SciCode or WeirdML, where it leads.

Which is cheaper, Gemini 3.5 Flash Lite or Gemma 4 31B?

Gemini 3.5 Flash Lite costs $0.30 per million input tokens and $2.50 per million output tokens; Gemma 4 31B costs $0.14 and $0.40. Cost per solved task is known for Gemini 3.5 Flash Lite only.

Which has the bigger context window, Gemini 3.5 Flash Lite or Gemma 4 31B?

Gemini 3.5 Flash Lite, with 1.05M tokens against 262K.

How many benchmarks is the Gemini 3.5 Flash Lite vs Gemma 4 31B comparison based on?

53 benchmarks have a result for both models as of October 22, 2026. Gemini 3.5 Flash Lite'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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<p style="font:13px/1.4 sans-serif;margin:6px 0 0">Source: <a href="https://llmbenchmark.ai/compare/gemini-3-5-flash-lite-vs-gemma-4-31b-it">LLMBenchmark.ai, Gemini 3.5 Flash Lite vs Gemma 4 31B</a></p>