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Gemini 3.5 Flash Lite vs Kimi K3

Kimi K3 leads Gemini 3.5 Flash Lite on coding, 62.3 to 49.0 on the Vibe Coding Index, and Gemini 3.5 Flash Lite costs 6.0x less per output token ($2.50 vs $15.00 per million). Updated October 21, 2026; 75 benchmarks have a result for both.

Replace Gemini 3.5 Flash Lite Replace Kimi K3
Gemini 3.5 Flash LiteGoogle
Coding
49.0
Overall
49.8
Output $/M
$2.50
1
Kimi K3Moonshot AI
Coding
62.3
Overall
66.5
Output $/M
$15.00
74
vs boards won of 75 shared

Gemini 3.5 Flash Lite or Kimi K3: which to pick

Pick Kimi K3 for coding: it scores 62.3 on the Vibe Coding Index against 49.0 for Gemini 3.5 Flash Lite.

Pick Gemini 3.5 Flash Lite for output tokens 6.0x cheaper ($2.50 vs $15.00 per million) and a lower cost per solved task ($0.41 against $0.81).

Model AGemini 3.5 Flash LiteGoogle49.0/1003 independent benchmarks$0.41 per solved taskModel BKimi K3Moonshot AI62.3/1006 independent benchmarks$0.81 per solved task
Shared results
75
Gemini 3.5 Flash Lite only
10
Kimi K3 only
42
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, Kimi K3 62.3 from 6 benchmarks.
Widest category
Math, 34.5 points apart on average over 6 shared benchmarks.
Widest single gap
ProofBench: Gemini 3.5 Flash Lite 13.0% against Kimi K3 87.0%, 74.0 points apart on a 0 to 100 scale.
Output price
Gemini 3.5 Flash Lite $2.50 against Kimi K3 $15.00 per million output tokens, 6.0x 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 LiteBarsKimi K3Ties
Coding016
Intelligence02
Agentic work06
Reasoning012
Math06
Knowledge19
General023
All shared boards174
CodingLike-for-likeSix of these boards feed the Vibe Coding Index016
Coding benchmarks for Gemini 3.5 Flash Lite and Kimi K3
BenchmarkGemini 3.5 Flash LiteKimi K3Leader
LiveBench codingNot measured59.3%Only Kimi K3 measured
LMArena WebDev14351655Kimi K3
AA Coding Index49.376.2Kimi K3
LiveCodeBench (Vals AI)79.0%87.2%Kimi K3
SWE-bench Verified (Vals AI)75.0%93.4%Kimi K3
Terminal-Bench 4 (Vals AI)Not measured17.2%Only Kimi K3 measured
Vibe Code Bench (Vals AI)37.2%85.0%Kimi K3
Code migration (Vals AI)6.2%16.1%Kimi K3
ProgramBench (Vals AI)0.0%2.0%Kimi K3
IOI (Vals AI)Not measured48.9%Only Kimi K3 measured
Terminal-Bench 2.1 (Vals AI)50.2%80.9%Kimi K3
SWE-bench Multimodal (Vals AI)Not measured44.2%Only Kimi K3 measured
Vibe Code Bench 1-100 (Vals AI)Not measured18.2%Only Kimi K3 measured
CyberBench (Vals AI)59.1%75.2%Kimi K3
SciCode41.3%59.5%Kimi K3
FrontierCodeNot measured44.2%Only Kimi K3 measured
FrontierSWENot measured25.9%Only Kimi K3 measured
WeirdML39.0%82.6%Kimi K3
ALE-Bench765.31524.5Kimi K3
LMArena Text: coding14531508Kimi K3
LMArena Text: software and IT14511499Kimi K3
LMArena WebDev: React14081670Kimi K3
LMArena WebDev: HTMLNot measured1644Only Kimi K3 measured
LMArena WebDev: from an image14481579Kimi K3
SciCode6.2%Not measuredOnly Gemini 3.5 Flash Lite measured
Neither model has a result on the other 14 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index02
Intelligence benchmarks for Gemini 3.5 Flash Lite and Kimi K3
BenchmarkGemini 3.5 Flash LiteKimi K3Leader
AA Intelligence Index22.243.6Kimi K3
Epoch Capabilities Index144.9157.9Kimi K3
Agentic workLike-for-likePublic boards, shown as published, kept out of the index06
Agentic work benchmarks for Gemini 3.5 Flash Lite and Kimi K3
BenchmarkGemini 3.5 Flash LiteKimi K3Leader
AA Agentic Index14.350.0Kimi K3
Design Arena: agents building web appsNot measured1295Only Kimi K3 measured
Design Arena: agents building full-stack appsNot measured1315Only Kimi K3 measured
Design Arena: agents building mobile appsNot measured1269Only Kimi K3 measured
Design Arena: agents building Android appsNot measured1250Only Kimi K3 measured
Design Arena: agents building Godot gamesNot measured1223Only Kimi K3 measured
Design Arena: agents building gamesNot measured1252Only Kimi K3 measured
Design Arena: HTML slidesNot measured1256Only Kimi K3 measured
Design Arena: PowerPoint slidesNot measured1273Only Kimi K3 measured
Design Arena: spreadsheetsNot measured1058Only Kimi K3 measured
LiveBench researchNot measured79.0%Only Kimi K3 measured
LiveBench browserNot measured16.0%Only Kimi K3 measured
LiveBench long agenticNot measured42.8%Only Kimi K3 measured
Finance Agent (Vals AI)47.4%53.1%Kimi K3
Tax Agent Bench (Vals AI)7.2%33.4%Kimi K3
Legal Research Bench (Vals AI)13.9%46.1%Kimi K3
Harvey's Legal Agent Benchmark (Vals AI)Not measured12.9%Only Kimi K3 measured
Excel Modeling Benchmark (Vals AI)43.2%66.7%Kimi K3
BioMysteryBench (Vals AI)Not measured72.6%Only Kimi K3 measured
Terminal-Bench-Science (Vals AI)Not measured1.4%Only Kimi K3 measured
Time Horizon Index (Vals AI)Not measured10.5%Only Kimi K3 measured
APEX-Agents29.3%47.8%Kimi K3
PostTrainBenchNot measured32.0%Only Kimi K3 measured
Vending-Bench 2Not measured$5,165Only Kimi K3 measured
Neither model has a result on the other 17 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index012
Reasoning benchmarks for Gemini 3.5 Flash Lite and Kimi K3
BenchmarkGemini 3.5 Flash LiteKimi K3Leader
GPQA Diamond83.8%92.9%Kimi K3
LiveBench reasoningNot measured90.7%Only Kimi K3 measured
MMMU Pro (Vals AI)83.6%88.2%Kimi K3
GPQA Diamond (Artificial Analysis run)83.8%93.5%Kimi K3
Humanity's Last Exam (Artificial Analysis run)18.8%46.9%Kimi K3
GPQA Diamond (Epoch AI run)83.3%93.1%Kimi K3
ARC-AGI53.5%94.5%Kimi K3
ARC-AGI-210.3%60.4%Kimi K3
SimpleBenchNot measured60.7%Only Kimi K3 measured
Chess puzzles21.0%37.0%Kimi K3
Mystery game puzzles19.0%26.0%Kimi K3
LMArena Text: hard prompts14411495Kimi K3
LMArena Text: expert14341520Kimi K3
LMArena Text: hard prompts in English14401496Kimi K3
LMArena Vision: diagrams1284Not measuredOnly Gemini 3.5 Flash Lite measured
LMArena Vision: homework1291Not measuredOnly Gemini 3.5 Flash Lite measured
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 Kimi K3
BenchmarkGemini 3.5 Flash LiteKimi K3Leader
OTIS Mock AIME71.1%97.2%Kimi K3
FrontierMath, tiers 1 to 326.0%72.2%Kimi K3
FrontierMath, tier 40.0%39.0%Kimi K3
ProofBench13.0%87.0%Kimi K3
LMArena Text: math14341494Kimi K3
LMArena Text: mathematical work14331505Kimi K3
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 Kimi K3
BenchmarkGemini 3.5 Flash LiteKimi K3Leader
MMLU Pro85.8%88.0%Kimi K3
LegalBench (Vals AI)84.1%86.2%Kimi K3
CorpFin (Vals AI)60.7%71.6%Kimi K3
TaxEval (Vals AI)72.6%75.7%Kimi K3
MortgageTax (Vals AI)68.7%66.3%Gemini 3.5 Flash Lite
MedCode (Vals AI)43.5%49.4%Kimi K3
SimpleQA VerifiedNot measured50.6%Only Kimi K3 measured
LMArena Text: science14511508Kimi K3
LMArena Text: medicine and healthcare14381489Kimi K3
LMArena Text: legal and government14311503Kimi K3
LMArena Text: business and finance14231470Kimi K3
FACTS Benchmark Suite53.5%Not measuredOnly Gemini 3.5 Flash Lite measured
Neither model has a result on the other 6 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared
Web design benchmarks for Gemini 3.5 Flash Lite and Kimi K3
BenchmarkGemini 3.5 Flash LiteKimi K3Leader
Design Arena: websitesNot measured1335Only Kimi K3 measured
Design Arena: UI componentsNot measured1344Only Kimi K3 measured
Design Arena: game devNot measured1359Only Kimi K3 measured
Design Arena: data vizNot measured1351Only Kimi K3 measured
Design Arena: 3DNot measured1388Only Kimi K3 measured
Design Arena: all code categoriesNot measured1360Only Kimi K3 measured
Design Arena: SVGNot measured1302Only Kimi K3 measured
LiveBench designNot measured77.2%Only Kimi K3 measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index023
General benchmarks for Gemini 3.5 Flash Lite and Kimi K3
BenchmarkGemini 3.5 Flash LiteKimi K3Leader
Vals IndexNot measured53.0%Only Kimi K3 measured
LiveBench data analysisNot measured78.7%Only Kimi K3 measured
Public Benefits Bench (Vals AI)51.8%68.2%Kimi K3
SAGE (Vals AI)47.3%52.8%Kimi K3
MedScribe (Vals AI)70.9%88.0%Kimi K3
Vals Multimodal IndexNot measured73.4%Only Kimi K3 measured
Long context reasoning (AA-LCR)76.0%88.7%Kimi K3
DTBench83.5%91.2%Kimi K3
LMCA37.6%52.7%Kimi K3
Surface Evolver BenchNot measured95.0%Only Kimi K3 measured
Furniture assemblyNot measured34.2%Only Kimi K3 measured
LMArena Text14351476Kimi K3
LMArena Text: instruction following14191485Kimi K3
LMArena Text: creative writing14211457Kimi K3
LMArena Vision1269Not measuredOnly Gemini 3.5 Flash Lite measured
LMArena Text: English14381481Kimi K3
LMArena Text: non-English14271466Kimi K3
LMArena Text: Chinese14681529Kimi K3
LMArena Text: German14541490Kimi K3
LMArena Text: Japanese14261494Kimi K3
LMArena Text: Korean14071460Kimi K3
LMArena Text: French14511492Kimi K3
LMArena Text: Spanish14411472Kimi K3
LMArena Text: Russian14431485Kimi K3
LMArena Text: Polish14371458Kimi K3
LMArena Text: multi-turn14451489Kimi K3
LMArena Text: longer queries14351494Kimi K3
LMArena Text: writing and language14281471Kimi K3
LMArena Text: entertainment and media14141453Kimi K3
LMArena Vision: English1269Not measuredOnly Gemini 3.5 Flash Lite measured
LMArena Vision: Chinese1311Not measuredOnly Gemini 3.5 Flash Lite measured
LMArena Vision: reading text1280Not measuredOnly Gemini 3.5 Flash Lite measured
LMArena Vision: humor1287Not measuredOnly Gemini 3.5 Flash Lite measured
LMArena Vision: creative writing1260Not measuredOnly Gemini 3.5 Flash Lite 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 3.5 Flash Lite and Kimi K3
BenchmarkGemini 3.5 Flash LiteKimi K3Leader
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
Kimi K3$0.011Fits 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
Kimi K3$0.195Fits 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
Kimi K3$0.750Fits 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 Kimi K3
SpecificationGoogle Gemini 3.5 Flash LiteMoonshotAI Kimi K3
MakerGoogleMoonshot AI
WeightsNo public weights listedOpen weights
ReleasedJuly 21, 2026July 16, 2026
Context window1.05M1.05M
Input $/Mtok$0.30$3.00
Output $/Mtok$2.50$15.00
Coding index49.062.3
Independent measurements behind it36
Cost per solved task$0.41$0.81
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemini 3.5 Flash Lite better than Kimi K3 for coding?

Pick Kimi K3 for coding: it scores 62.3 on the Vibe Coding Index against 49.0 for Gemini 3.5 Flash Lite. Pick Gemini 3.5 Flash Lite for output tokens 6.0x cheaper ($2.50 vs $15.00 per million) and a lower cost per solved task ($0.41 against $0.81).

Which is cheaper, Gemini 3.5 Flash Lite or Kimi K3?

Gemini 3.5 Flash Lite costs $0.30 per million input tokens and $2.50 per million output tokens; Kimi K3 costs $3.00 and $15.00. Per solved SWE-bench Verified task, Gemini 3.5 Flash Lite costs $0.41 and Kimi K3 $0.81.

Which has the bigger context window, Gemini 3.5 Flash Lite or Kimi K3?

Neither: both take 1.05M tokens.

How many benchmarks is the Gemini 3.5 Flash Lite vs Kimi K3 comparison based on?

75 benchmarks have a result for both models as of October 21, 2026. Gemini 3.5 Flash Lite's coding index rests on 3 independent benchmarks and Kimi K3's on 6. Where only one model has a result, the page says so instead of naming a winner.

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