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DeepSeek V4 Flash 0423 vs Gemini 3.1 Flash Lite Preview

DeepSeek V4 Flash 0423 leads Gemini 3.1 Flash Lite Preview on the Artificial Analysis Intelligence Index, 24.4 to 15.6, and DeepSeek V4 Flash 0423 costs 5.4x less per output token ($0.28 vs $1.50 per million). Updated October 21, 2026; 43 benchmarks have a result for both.

Replace DeepSeek V4 Flash 0423 Replace Gemini 3.1 Flash Lite Preview
DeepSeek V4 Flash 0423DeepSeek
Coding
No data
Overall
No data
Output $/M
$0.28
36
Gemini 3.1 Flash Lite PreviewGoogle
Coding
22.7
Overall
36.6
Output $/M
$1.50
7
vs boards won of 43 shared

DeepSeek V4 Flash 0423 or Gemini 3.1 Flash Lite Preview: which to pick

Only Gemini 3.1 Flash Lite Preview has a coding score, 22.7 on the Vibe Coding Index; DeepSeek V4 Flash 0423 has none, so the two cannot be ranked on coding.

Pick DeepSeek V4 Flash 0423 for output tokens 5.4x cheaper ($0.28 vs $1.50 per million) and work measured by LMArena WebDev or AA Coding Index, where it leads.

Model ADeepSeek V4 Flash 0423DeepSeekNot benchmarked1 independent benchmarkNo cost per solved taskModel BGemini 3.1 Flash Lite PreviewGoogle22.7/1003 independent benchmarks$0.18 per solved task
Shared results
43
DeepSeek V4 Flash 0423 only
6
Gemini 3.1 Flash Lite Preview only
36
Like-for-like categories
8 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
DeepSeek V4 Flash 0423 not benchmarked, Gemini 3.1 Flash Lite Preview 22.7 from 3 benchmarks.
Widest category
Coding, 26.8 points apart on average over 7 shared benchmarks.
Widest single gap
LMArena WebDev: React: DeepSeek V4 Flash 0423 1585 against Gemini 3.1 Flash Lite Preview 1245, 56.6 points apart on a 0 to 100 scale.
Output price
DeepSeek V4 Flash 0423 $0.28 against Gemini 3.1 Flash Lite Preview $1.50 per million output tokens, 5.4x 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
CategoryDeepSeek V4 Flash 0423BarsGemini 3.1 Flash Lite PreviewTies
Coding61
Intelligence10
Agentic work10
Reasoning30
Math11
Knowledge40
Web design71
General134
All shared boards367
CodingLike-for-likeSix of these boards feed the Vibe Coding Index61
Coding benchmarks for DeepSeek V4 Flash 0423 and Gemini 3.1 Flash Lite Preview
BenchmarkDeepSeek V4 Flash 0423Gemini 3.1 Flash Lite PreviewLeader
LMArena WebDev15821257DeepSeek V4 Flash 0423
AA Coding Index52.034.7DeepSeek V4 Flash 0423
LiveCodeBench (Vals AI)Not measured80.1%Only Gemini 3.1 Flash Lite Preview measured
SWE-bench Verified (Vals AI)Not measured62.8%Only Gemini 3.1 Flash Lite Preview measured
Vibe Code Bench (Vals AI)Not measured0.0%Only Gemini 3.1 Flash Lite Preview measured
Code migration (Vals AI)Not measured4.6%Only Gemini 3.1 Flash Lite Preview measured
ProgramBench (Vals AI)Not measured0.0%Only Gemini 3.1 Flash Lite Preview measured
Terminal-Bench 2.1 (Vals AI)Not measured34.1%Only Gemini 3.1 Flash Lite Preview measured
WeirdML45.6%Not measuredOnly DeepSeek V4 Flash 0423 measured
ALE-Bench678.2797.7Gemini 3.1 Flash Lite Preview
LMArena Text: coding14571400DeepSeek V4 Flash 0423
LMArena Text: software and IT14531413DeepSeek V4 Flash 0423
LMArena WebDev: React15851245DeepSeek V4 Flash 0423
LMArena WebDev: HTML15581276DeepSeek V4 Flash 0423
LMArena WebDev: from an imageNot measured1336Only Gemini 3.1 Flash Lite Preview measured
SciCodeNot measured4.6%Only Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 23 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
Intelligence benchmarks for DeepSeek V4 Flash 0423 and Gemini 3.1 Flash Lite Preview
BenchmarkDeepSeek V4 Flash 0423Gemini 3.1 Flash Lite PreviewLeader
AA Intelligence Index24.415.6DeepSeek V4 Flash 0423
Epoch Capabilities Index146.1Not measuredOnly DeepSeek V4 Flash 0423 measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index10
Agentic work benchmarks for DeepSeek V4 Flash 0423 and Gemini 3.1 Flash Lite Preview
BenchmarkDeepSeek V4 Flash 0423Gemini 3.1 Flash Lite PreviewLeader
AA Agentic Index26.31.6DeepSeek V4 Flash 0423
Finance Agent (Vals AI)Not measured30.0%Only Gemini 3.1 Flash Lite Preview measured
Tax Agent Bench (Vals AI)Not measured3.1%Only Gemini 3.1 Flash Lite Preview measured
Legal Research Bench (Vals AI)Not measured3.4%Only Gemini 3.1 Flash Lite Preview measured
Excel Modeling Benchmark (Vals AI)Not measured8.6%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 index30
Reasoning benchmarks for DeepSeek V4 Flash 0423 and Gemini 3.1 Flash Lite Preview
BenchmarkDeepSeek V4 Flash 0423Gemini 3.1 Flash Lite PreviewLeader
GPQA DiamondNot measured81.1%Only Gemini 3.1 Flash Lite Preview measured
MMMU Pro (Vals AI)Not measured82.5%Only Gemini 3.1 Flash Lite Preview measured
SimpleBench46.3%Not measuredOnly DeepSeek V4 Flash 0423 measured
LMArena Text: hard prompts14441407DeepSeek V4 Flash 0423
LMArena Text: expert14411398DeepSeek V4 Flash 0423
LMArena Text: hard prompts in English14491403DeepSeek V4 Flash 0423
LMArena Vision: diagramsNot measured1242Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: homeworkNot measured1271Only Gemini 3.1 Flash Lite Preview measured
Kagi LLM Benchmark52.2%Not measuredOnly DeepSeek V4 Flash 0423 measured
Neither model has a result on the other 13 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index11
Math benchmarks for DeepSeek V4 Flash 0423 and Gemini 3.1 Flash Lite Preview
BenchmarkDeepSeek V4 Flash 0423Gemini 3.1 Flash Lite PreviewLeader
AIMENot measured83.3%Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: math14261428Gemini 3.1 Flash Lite Preview
LMArena Text: mathematical work14321417DeepSeek V4 Flash 0423
Neither model has a result on the other 10 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index40
Knowledge benchmarks for DeepSeek V4 Flash 0423 and Gemini 3.1 Flash Lite Preview
BenchmarkDeepSeek V4 Flash 0423Gemini 3.1 Flash Lite PreviewLeader
MMLU ProNot measured86.2%Only Gemini 3.1 Flash Lite Preview measured
LegalBench (Vals AI)Not measured83.8%Only Gemini 3.1 Flash Lite Preview measured
CaseLaw (Vals AI)Not measured55.0%Only Gemini 3.1 Flash Lite Preview measured
CorpFin (Vals AI)Not measured59.4%Only Gemini 3.1 Flash Lite Preview measured
TaxEval (Vals AI)Not measured71.8%Only Gemini 3.1 Flash Lite Preview measured
MortgageTax (Vals AI)Not measured68.0%Only Gemini 3.1 Flash Lite Preview measured
MedCode (Vals AI)Not measured47.6%Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: science14461425DeepSeek V4 Flash 0423
LMArena Text: medicine and healthcare14481428DeepSeek V4 Flash 0423
LMArena Text: legal and government14391418DeepSeek V4 Flash 0423
LMArena Text: business and finance14251389DeepSeek V4 Flash 0423
FACTS Benchmark SuiteNot measured51.4%Only Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 6 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index71
Web design benchmarks for DeepSeek V4 Flash 0423 and Gemini 3.1 Flash Lite Preview
BenchmarkDeepSeek V4 Flash 0423Gemini 3.1 Flash Lite PreviewLeader
Design Arena: websites12081083DeepSeek V4 Flash 0423
Design Arena: UI components11651072DeepSeek V4 Flash 0423
Design Arena: game dev11971029DeepSeek V4 Flash 0423
Design Arena: data viz11271045DeepSeek V4 Flash 0423
Design Arena: 3D11891048DeepSeek V4 Flash 0423
Design Arena: all code categories12051072DeepSeek V4 Flash 0423
Design Arena: SVG11551052DeepSeek V4 Flash 0423
Design Arena: ASCII art11091167Gemini 3.1 Flash Lite Preview
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index134
General benchmarks for DeepSeek V4 Flash 0423 and Gemini 3.1 Flash Lite Preview
BenchmarkDeepSeek V4 Flash 0423Gemini 3.1 Flash Lite PreviewLeader
SAGE (Vals AI)Not measured49.5%Only Gemini 3.1 Flash Lite Preview measured
MedScribe (Vals AI)Not measured63.9%Only Gemini 3.1 Flash Lite Preview measured
Vals Multimodal IndexNot measured41.4%Only Gemini 3.1 Flash Lite Preview measured
DTBench86.4%Not measuredOnly DeepSeek V4 Flash 0423 measured
LMCA35.9%Not measuredOnly DeepSeek V4 Flash 0423 measured
LMArena Text14321416DeepSeek V4 Flash 0423
LMArena Text: instruction following14211377DeepSeek V4 Flash 0423
LMArena Text: creative writing14031401DeepSeek V4 Flash 0423
LMArena VisionNot measured1240Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: English14411414DeepSeek V4 Flash 0423
LMArena Text: non-English14191410DeepSeek V4 Flash 0423
LMArena Text: Chinese14631460DeepSeek V4 Flash 0423
LMArena Text: German14191430Gemini 3.1 Flash Lite Preview
LMArena Text: Japanese13891413Gemini 3.1 Flash Lite Preview
LMArena Text: Korean13831392Gemini 3.1 Flash Lite Preview
LMArena Text: French14391424DeepSeek V4 Flash 0423
LMArena Text: Spanish14361421DeepSeek V4 Flash 0423
LMArena Text: Russian14271420DeepSeek V4 Flash 0423
LMArena Text: Polish14361443Gemini 3.1 Flash Lite Preview
LMArena Text: multi-turn14491417DeepSeek V4 Flash 0423
LMArena Text: longer queries14341394DeepSeek V4 Flash 0423
LMArena Text: writing and language14101408DeepSeek V4 Flash 0423
LMArena Text: entertainment and media14001386DeepSeek V4 Flash 0423
LMArena Vision: EnglishNot measured1232Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: ChineseNot measured1278Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: reading textNot measured1246Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: humorNot measured1266Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: captioningNot measured1259Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: recognizing thingsNot measured1308Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: creative writingNot measured1248Only 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 DeepSeek V4 Flash 0423 and Gemini 3.1 Flash Lite Preview
BenchmarkDeepSeek V4 Flash 0423Gemini 3.1 Flash Lite PreviewLeader
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

DeepSeek V4 Flash 0423$0.0003Fits in one request
Gemini 3.1 Flash Lite Preview$0.0010Fits in one request

DeepSeek V4 Flash 0423 costs less

Repository review

50K input + 3K output tokens

DeepSeek V4 Flash 0423$0.0073Fits in one request
Gemini 3.1 Flash Lite Preview$0.017Fits in one request

DeepSeek V4 Flash 0423 costs less

Agent loop

200K input + 10K output tokens

DeepSeek V4 Flash 0423$0.029Fits in one request
Gemini 3.1 Flash Lite Preview$0.065Fits in one request

DeepSeek V4 Flash 0423 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 DeepSeek V4 Flash 0423 and Gemini 3.1 Flash Lite Preview
SpecificationDeepSeek V4 Flash 0423Google Gemini 3.1 Flash Lite Preview
MakerDeepSeekGoogle
WeightsOpen weightsNo public weights listed
ReleasedApril 24, 2026March 3, 2026
Context window1.05M1.05M
Input $/Mtok$0.13$0.25
Output $/Mtok$0.28$1.50
Coding indexNot benchmarked22.7
Independent measurements behind it13
Cost per solved taskNot computable$0.18
SourceOpenRouter listingOpenRouter listing

Questions

Is DeepSeek V4 Flash 0423 better than Gemini 3.1 Flash Lite Preview for coding?

Only Gemini 3.1 Flash Lite Preview has a coding score, 22.7 on the Vibe Coding Index; DeepSeek V4 Flash 0423 has none, so the two cannot be ranked on coding. Pick DeepSeek V4 Flash 0423 for output tokens 5.4x cheaper ($0.28 vs $1.50 per million) and work measured by LMArena WebDev or AA Coding Index, where it leads.

Which is cheaper, DeepSeek V4 Flash 0423 or Gemini 3.1 Flash Lite Preview?

DeepSeek V4 Flash 0423 costs $0.13 per million input tokens and $0.28 per million output tokens; Gemini 3.1 Flash Lite Preview costs $0.25 and $1.50. Cost per solved task is known for Gemini 3.1 Flash Lite Preview only.

Which has the bigger context window, DeepSeek V4 Flash 0423 or Gemini 3.1 Flash Lite Preview?

Neither: both take 1.05M tokens.

How many benchmarks is the DeepSeek V4 Flash 0423 vs Gemini 3.1 Flash Lite Preview comparison based on?

43 benchmarks have a result for both models as of October 21, 2026. DeepSeek V4 Flash 0423's coding index rests on 1 independent benchmark and Gemini 3.1 Flash Lite Preview's on 3. Where only one model has a result, the page says so instead of naming a winner.

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