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Gemini 3.5 Flash Lite vs Gemini 3.8 Flash

Gemini 3.8 Flash leads Gemini 3.5 Flash Lite on coding, 61.6 to 49.0 on the Vibe Coding Index, and Gemini 3.5 Flash Lite costs 1.5x less per output token ($2.50 vs $3.75 per million). Updated October 22, 2026; 84 benchmarks have a result for both.

Replace Gemini 3.5 Flash Lite Replace Gemini 3.8 Flash
Gemini 3.5 Flash LiteGoogle
Coding
49.0
Overall
49.8
Output $/M
$2.50
3
Gemini 3.8 FlashGoogle
Coding
61.6
Overall
69.0
Output $/M
$3.75
81
vs boards won of 84 shared

Gemini 3.5 Flash Lite or Gemini 3.8 Flash: which to pick

Pick Gemini 3.8 Flash for coding: it scores 61.6 on the Vibe Coding Index against 49.0 for Gemini 3.5 Flash Lite.

Pick Gemini 3.5 Flash Lite for output tokens 1.5x cheaper ($2.50 vs $3.75 per million) and a lower cost per solved task ($0.41 against $2.74).

Model AGemini 3.5 Flash LiteGoogle49.0/1003 independent benchmarks$0.41 per solved taskModel BGemini 3.8 FlashGoogle61.6/1006 independent benchmarks$2.74 per solved task
Shared results
84
Gemini 3.5 Flash Lite only
1
Gemini 3.8 Flash only
44
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, Gemini 3.8 Flash 61.6 from 6 benchmarks.
Widest category
Math, 26.3 points apart on average over 6 shared benchmarks.
Widest single gap
ARC-AGI-2: Gemini 3.5 Flash Lite 10.3% against Gemini 3.8 Flash 89.2%, 78.9 points apart on a 0 to 100 scale.
Output price
Gemini 3.5 Flash Lite $2.50 against Gemini 3.8 Flash $3.75 per million output tokens, 1.5x apart.
Context window
Both take 1.05M tokens.

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 LiteBarsGemini 3.8 FlashTies
Coding116
Intelligence02
Agentic work06
Reasoning014
Math06
Knowledge19
General128
All shared boards381
CodingLike-for-likeSix of these boards feed the Vibe Coding Index116
Coding benchmarks for Gemini 3.5 Flash Lite and Gemini 3.8 Flash
BenchmarkGemini 3.5 Flash LiteGemini 3.8 FlashLeader
LiveBench codingNot measured82.2%Only Gemini 3.8 Flash measured
LMArena WebDev14351585Gemini 3.8 Flash
AA Coding Index49.376.3Gemini 3.8 Flash
LiveCodeBench (Vals AI)79.0%89.5%Gemini 3.8 Flash
SWE-bench Verified (Vals AI)75.0%80.0%Gemini 3.8 Flash
Terminal-Bench 4 (Vals AI)Not measured19.7%Only Gemini 3.8 Flash measured
Vibe Code Bench (Vals AI)37.2%78.7%Gemini 3.8 Flash
Code migration (Vals AI)6.2%36.5%Gemini 3.8 Flash
ProgramBench (Vals AI)0.0%1.0%Gemini 3.8 Flash
IOI (Vals AI)Not measured56.9%Only Gemini 3.8 Flash measured
Terminal-Bench 2.1 (Vals AI)50.2%81.3%Gemini 3.8 Flash
SWE-bench Multimodal (Vals AI)Not measured40.8%Only Gemini 3.8 Flash measured
Vibe Code Bench 1-100 (Vals AI)Not measured18.8%Only Gemini 3.8 Flash measured
SkillsBench (Vals AI)Not measured58.0%Only Gemini 3.8 Flash measured
CyberBench (Vals AI)59.1%43.8%Gemini 3.5 Flash Lite
SciCode41.3%56.6%Gemini 3.8 Flash
FrontierCodeNot measured41.2%Only Gemini 3.8 Flash measured
FrontierSWENot measured19.6%Only Gemini 3.8 Flash measured
WeirdML39.0%84.8%Gemini 3.8 Flash
ALE-Bench765.31269.7Gemini 3.8 Flash
LMArena Text: coding14531508Gemini 3.8 Flash
LMArena Text: software and IT14511507Gemini 3.8 Flash
LMArena WebDev: React14081577Gemini 3.8 Flash
LMArena WebDev: HTMLNot measured1616Only Gemini 3.8 Flash measured
LMArena WebDev: from an image14481593Gemini 3.8 Flash
SciCode6.2%12.3%Gemini 3.8 Flash
Neither model has a result on the other 13 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index02
Intelligence benchmarks for Gemini 3.5 Flash Lite and Gemini 3.8 Flash
BenchmarkGemini 3.5 Flash LiteGemini 3.8 FlashLeader
AA Intelligence Index22.240.9Gemini 3.8 Flash
Epoch Capabilities Index144.9157.4Gemini 3.8 Flash
Agentic workLike-for-likePublic boards, shown as published, kept out of the index06
Agentic work benchmarks for Gemini 3.5 Flash Lite and Gemini 3.8 Flash
BenchmarkGemini 3.5 Flash LiteGemini 3.8 FlashLeader
AA Agentic Index14.340.2Gemini 3.8 Flash
Design Arena: agents building web appsNot measured1238Only Gemini 3.8 Flash measured
Design Arena: agents building full-stack appsNot measured1244Only Gemini 3.8 Flash measured
Design Arena: agents building mobile appsNot measured1236Only Gemini 3.8 Flash measured
Design Arena: agents building Android appsNot measured1078Only Gemini 3.8 Flash measured
Design Arena: agents building Godot gamesNot measured1273Only Gemini 3.8 Flash measured
Design Arena: PowerPoint slidesNot measured1153Only Gemini 3.8 Flash measured
Design Arena: spreadsheetsNot measured1022Only Gemini 3.8 Flash measured
LiveBench researchNot measured79.1%Only Gemini 3.8 Flash measured
LiveBench browserNot measured64.0%Only Gemini 3.8 Flash measured
LiveBench long agenticNot measured30.1%Only Gemini 3.8 Flash measured
SREBench (Vals AI)Not measured11.1%Only Gemini 3.8 Flash measured
Finance Agent (Vals AI)47.4%61.4%Gemini 3.8 Flash
Tax Agent Bench (Vals AI)7.2%32.1%Gemini 3.8 Flash
Legal Research Bench (Vals AI)13.9%38.9%Gemini 3.8 Flash
Harvey's Legal Agent Benchmark (Vals AI)Not measured12.1%Only Gemini 3.8 Flash measured
Excel Modeling Benchmark (Vals AI)43.2%72.2%Gemini 3.8 Flash
BioMysteryBench (Vals AI)Not measured62.2%Only Gemini 3.8 Flash measured
Terminal-Bench-Science (Vals AI)Not measured8.6%Only Gemini 3.8 Flash measured
Vals Science IndexNot measured35.8%Only Gemini 3.8 Flash measured
Time Horizon Index (Vals AI)Not measured18.8%Only Gemini 3.8 Flash measured
CUA-bench (Vals AI)Not measured4.2%Only Gemini 3.8 Flash measured
APEX-Agents29.3%64.3%Gemini 3.8 Flash
Remote Labor IndexNot measured5.8%Only Gemini 3.8 Flash measured
Vending-Bench 2Not measured$5,094Only Gemini 3.8 Flash measured
Neither model has a result on the other 16 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index014
Reasoning benchmarks for Gemini 3.5 Flash Lite and Gemini 3.8 Flash
BenchmarkGemini 3.5 Flash LiteGemini 3.8 FlashLeader
GPQA Diamond83.8%94.4%Gemini 3.8 Flash
LiveBench reasoningNot measured89.3%Only Gemini 3.8 Flash measured
MysteryMechanism (Vals AI)Not measured36.5%Only Gemini 3.8 Flash measured
MMMU Pro (Vals AI)83.6%89.1%Gemini 3.8 Flash
GPQA Diamond (Artificial Analysis run)83.8%95.3%Gemini 3.8 Flash
Humanity's Last Exam (Artificial Analysis run)18.8%47.8%Gemini 3.8 Flash
GPQA Diamond (Epoch AI run)83.3%95.4%Gemini 3.8 Flash
ARC-AGI53.5%98.5%Gemini 3.8 Flash
ARC-AGI-210.3%89.2%Gemini 3.8 Flash
Chess puzzles21.0%58.0%Gemini 3.8 Flash
Mystery game puzzles19.0%47.0%Gemini 3.8 Flash
LMArena Text: hard prompts14411509Gemini 3.8 Flash
LMArena Text: expert14341526Gemini 3.8 Flash
LMArena Text: hard prompts in English14401504Gemini 3.8 Flash
LMArena Vision: diagrams12841345Gemini 3.8 Flash
LMArena Vision: homework12911351Gemini 3.8 Flash
Neither model has a result on the other 6 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index06
Math benchmarks for Gemini 3.5 Flash Lite and Gemini 3.8 Flash
BenchmarkGemini 3.5 Flash LiteGemini 3.8 FlashLeader
OTIS Mock AIME71.1%98.9%Gemini 3.8 Flash
FrontierMath, tiers 1 to 326.0%68.4%Gemini 3.8 Flash
FrontierMath, tier 40.0%22.0%Gemini 3.8 Flash
ProofBench13.0%48.0%Gemini 3.8 Flash
LMArena Text: math14341532Gemini 3.8 Flash
LMArena Text: mathematical work14331519Gemini 3.8 Flash
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index19
Knowledge benchmarks for Gemini 3.5 Flash Lite and Gemini 3.8 Flash
BenchmarkGemini 3.5 Flash LiteGemini 3.8 FlashLeader
MMLU Pro85.8%90.2%Gemini 3.8 Flash
LegalBench (Vals AI)84.1%87.0%Gemini 3.8 Flash
CorpFin (Vals AI)60.7%Not measuredOnly Gemini 3.5 Flash Lite measured
TaxEval (Vals AI)72.6%74.5%Gemini 3.8 Flash
MortgageTax (Vals AI)68.7%65.3%Gemini 3.5 Flash Lite
MedCode (Vals AI)43.5%48.1%Gemini 3.8 Flash
SimpleQA VerifiedNot measured69.7%Only Gemini 3.8 Flash measured
LMArena Text: science14511523Gemini 3.8 Flash
LMArena Text: medicine and healthcare14381508Gemini 3.8 Flash
LMArena Text: legal and government14311497Gemini 3.8 Flash
LMArena Text: business and finance14231479Gemini 3.8 Flash
FACTS Benchmark Suite53.5%69.4%Gemini 3.8 Flash
Neither model has a result on the other 6 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index9 boards, none shared
Web design benchmarks for Gemini 3.5 Flash Lite and Gemini 3.8 Flash
BenchmarkGemini 3.5 Flash LiteGemini 3.8 FlashLeader
Design Arena: websitesNot measured1300Only Gemini 3.8 Flash measured
Design Arena: UI componentsNot measured1316Only Gemini 3.8 Flash measured
Design Arena: game devNot measured1304Only Gemini 3.8 Flash measured
Design Arena: data vizNot measured1270Only Gemini 3.8 Flash measured
Design Arena: 3DNot measured1294Only Gemini 3.8 Flash measured
Design Arena: all code categoriesNot measured1303Only Gemini 3.8 Flash measured
Design Arena: SVGNot measured1296Only Gemini 3.8 Flash measured
Design Arena: ASCII artNot measured1262Only Gemini 3.8 Flash measured
LiveBench designNot measured72.7%Only Gemini 3.8 Flash measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index128
General benchmarks for Gemini 3.5 Flash Lite and Gemini 3.8 Flash
BenchmarkGemini 3.5 Flash LiteGemini 3.8 FlashLeader
Vals IndexNot measured56.0%Only Gemini 3.8 Flash measured
LiveBench data analysisNot measured54.0%Only Gemini 3.8 Flash measured
Public Benefits Bench (Vals AI)51.8%65.3%Gemini 3.8 Flash
SAGE (Vals AI)47.3%35.1%Gemini 3.5 Flash Lite
MedScribe (Vals AI)70.9%84.5%Gemini 3.8 Flash
Long context reasoning (AA-LCR)76.0%84.0%Gemini 3.8 Flash
DTBench83.5%95.7%Gemini 3.8 Flash
LMCA37.6%52.9%Gemini 3.8 Flash
Surface Evolver BenchNot measured76.9%Only Gemini 3.8 Flash measured
Furniture assemblyNot measured31.7%Only Gemini 3.8 Flash measured
LMArena Text14351499Gemini 3.8 Flash
LMArena Text: instruction following14191492Gemini 3.8 Flash
LMArena Text: creative writing14211488Gemini 3.8 Flash
LMArena Vision12691315Gemini 3.8 Flash
LMArena Text: English14381498Gemini 3.8 Flash
LMArena Text: non-English14271491Gemini 3.8 Flash
LMArena Text: Chinese14681553Gemini 3.8 Flash
LMArena Text: German14541501Gemini 3.8 Flash
LMArena Text: Japanese14261507Gemini 3.8 Flash
LMArena Text: Korean14071464Gemini 3.8 Flash
LMArena Text: French14511496Gemini 3.8 Flash
LMArena Text: Spanish14411487Gemini 3.8 Flash
LMArena Text: Russian14431514Gemini 3.8 Flash
LMArena Text: Polish14371497Gemini 3.8 Flash
LMArena Text: multi-turn14451503Gemini 3.8 Flash
LMArena Text: longer queries14351507Gemini 3.8 Flash
LMArena Text: writing and language14281494Gemini 3.8 Flash
LMArena Text: entertainment and media14141480Gemini 3.8 Flash
LMArena Vision: English12691318Gemini 3.8 Flash
LMArena Vision: Chinese13111416Gemini 3.8 Flash
LMArena Vision: reading text12801333Gemini 3.8 Flash
LMArena Vision: humor12871321Gemini 3.8 Flash
LMArena Vision: creative writing12601299Gemini 3.8 Flash
Neither model has a result on the other 13 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 Gemini 3.8 Flash
BenchmarkGemini 3.5 Flash LiteGemini 3.8 FlashLeader
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
Gemini 3.8 Flash$0.0026Fits in one request

Gemini 3.5 Flash Lite costs less

Repository review

50K input + 3K output tokens

Gemini 3.5 Flash Lite$0.022Fits in one request
Gemini 3.8 Flash$0.049Fits in one request

Gemini 3.5 Flash Lite costs less

Agent loop

200K input + 10K output tokens

Gemini 3.5 Flash Lite$0.085Fits in one request
Gemini 3.8 Flash$0.188Fits in one request

Gemini 3.5 Flash Lite 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 Gemini 3.8 Flash
SpecificationGoogle Gemini 3.5 Flash LiteGoogle Gemini 3.8 Flash
MakerGoogleGoogle
WeightsNo public weights listedNo public weights listed
ReleasedJuly 21, 2026September 2, 2026
Context window1.05M1.05M
Input $/Mtok$0.30$0.75
Output $/Mtok$2.50$3.75
Coding index49.061.6
Independent measurements behind it36
Cost per solved task$0.41$2.74
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemini 3.5 Flash Lite better than Gemini 3.8 Flash for coding?

Pick Gemini 3.8 Flash for coding: it scores 61.6 on the Vibe Coding Index against 49.0 for Gemini 3.5 Flash Lite. Pick Gemini 3.5 Flash Lite for output tokens 1.5x cheaper ($2.50 vs $3.75 per million) and a lower cost per solved task ($0.41 against $2.74).

Which is cheaper, Gemini 3.5 Flash Lite or Gemini 3.8 Flash?

Gemini 3.5 Flash Lite costs $0.30 per million input tokens and $2.50 per million output tokens; Gemini 3.8 Flash costs $0.75 and $3.75. Per solved SWE-bench Verified task, Gemini 3.5 Flash Lite costs $0.41 and Gemini 3.8 Flash $2.74.

Which has the bigger context window, Gemini 3.5 Flash Lite or Gemini 3.8 Flash?

Neither: both take 1.05M tokens.

How many benchmarks is the Gemini 3.5 Flash Lite vs Gemini 3.8 Flash comparison based on?

84 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 Gemini 3.8 Flash's on 6. 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-gemini-3-8-flash">LLMBenchmark.ai, Gemini 3.5 Flash Lite vs Gemini 3.8 Flash</a></p>