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Gemini 3.1 Flash Lite Preview vs GPT-5.4 Nano

GPT-5.4 Nano leads Gemini 3.1 Flash Lite Preview on coding, 44.8 to 22.7 on the Vibe Coding Index, and GPT-5.4 Nano costs 1.2x less per output token ($1.25 vs $1.50 per million). Updated October 22, 2026; 63 benchmarks have a result for both.

Replace Gemini 3.1 Flash Lite Preview Replace GPT-5.4 Nano
Gemini 3.1 Flash Lite PreviewGoogle
Coding
22.7
Overall
36.6
Output $/M
$1.50
45
GPT-5.4 NanoOpenAI
Coding
44.8
Overall
45.7
Output $/M
$1.25
18
vs boards won of 63 shared

Gemini 3.1 Flash Lite Preview or GPT-5.4 Nano: which to pick

Pick GPT-5.4 Nano for coding: it scores 44.8 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 400K tokens) and work measured by LMArena Text: software and IT or GPQA Diamond, where it leads.

Model AGemini 3.1 Flash Lite PreviewGoogle22.7/1003 independent benchmarks$0.18 per solved taskModel BGPT-5.4 NanoOpenAI44.8/1002 independent benchmarks$0.14 per solved task
Shared results
63
Gemini 3.1 Flash Lite Preview only
16
GPT-5.4 Nano only
22
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 3.1 Flash Lite Preview 22.7 from 3 benchmarks, GPT-5.4 Nano 44.8 from 2 benchmarks.
Widest category
Agentic work, 12.7 points apart on average over 5 shared benchmarks.
Widest single gap
Excel Modeling Benchmark (Vals AI): Gemini 3.1 Flash Lite Preview 8.6% against GPT-5.4 Nano 44.8%, 36.1 points apart on a 0 to 100 scale.
Output price
Gemini 3.1 Flash Lite Preview $1.50 against GPT-5.4 Nano $1.25 per million output tokens, 1.2x apart.
Context window
Gemini 3.1 Flash Lite Preview takes 1.05M tokens, GPT-5.4 Nano 400K.

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 3.1 Flash Lite PreviewBarsGPT-5.4 NanoTies
Coding18
Intelligence01
Agentic work05
Reasoning70
Math21
Knowledge101
General252
All shared boards4518
CodingLike-for-likeSix of these boards feed the Vibe Coding Index18
Coding benchmarks for Gemini 3.1 Flash Lite Preview and GPT-5.4 Nano
BenchmarkGemini 3.1 Flash Lite PreviewGPT-5.4 NanoLeader
LMArena WebDev1257Not measuredOnly Gemini 3.1 Flash Lite Preview measured
AA Coding Index34.756.1GPT-5.4 Nano
LiveCodeBench (Vals AI)80.1%84.0%GPT-5.4 Nano
SWE-bench Verified (Vals AI)62.8%69.8%GPT-5.4 Nano
Vibe Code Bench (Vals AI)0.0%26.1%GPT-5.4 Nano
Code migration (Vals AI)4.6%14.5%GPT-5.4 Nano
ProgramBench (Vals AI)0.0%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Terminal-Bench 2.1 (Vals AI)34.1%41.6%GPT-5.4 Nano
SciCodeNot measured47.2%Only GPT-5.4 Nano measured
Terminal-Bench Hard (Artificial Analysis run)Not measured42.4%Only GPT-5.4 Nano measured
WeirdMLNot measured49.2%Only GPT-5.4 Nano measured
ALE-Bench797.71004.5GPT-5.4 Nano
LMArena Text: coding14001404GPT-5.4 Nano
LMArena Text: software and IT14131402Gemini 3.1 Flash Lite Preview
LMArena WebDev: React1245Not measuredOnly Gemini 3.1 Flash Lite Preview measured
LMArena WebDev: HTML1276Not measuredOnly Gemini 3.1 Flash Lite Preview measured
LMArena WebDev: from an image1336Not measuredOnly Gemini 3.1 Flash Lite Preview measured
SciCode4.6%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 21 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
Intelligence benchmarks for Gemini 3.1 Flash Lite Preview and GPT-5.4 Nano
BenchmarkGemini 3.1 Flash Lite PreviewGPT-5.4 NanoLeader
AA Intelligence Index15.620.7GPT-5.4 Nano
Epoch Capabilities IndexNot measured146.0Only GPT-5.4 Nano measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index05
Agentic work benchmarks for Gemini 3.1 Flash Lite Preview and GPT-5.4 Nano
BenchmarkGemini 3.1 Flash Lite PreviewGPT-5.4 NanoLeader
AA Agentic Index1.616.0GPT-5.4 Nano
Finance Agent (Vals AI)30.0%38.2%GPT-5.4 Nano
Tax Agent Bench (Vals AI)3.1%5.0%GPT-5.4 Nano
Legal Research Bench (Vals AI)3.4%6.3%GPT-5.4 Nano
Excel Modeling Benchmark (Vals AI)8.6%44.8%GPT-5.4 Nano
τ²-Bench TelecomNot measured76.0%Only GPT-5.4 Nano measured
Neither model has a result on the other 35 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index70
Reasoning benchmarks for Gemini 3.1 Flash Lite Preview and GPT-5.4 Nano
BenchmarkGemini 3.1 Flash Lite PreviewGPT-5.4 NanoLeader
GPQA Diamond81.1%77.5%Gemini 3.1 Flash Lite Preview
MMMU Pro (Vals AI)82.5%73.6%Gemini 3.1 Flash Lite Preview
GPQA Diamond (Artificial Analysis run)Not measured81.7%Only GPT-5.4 Nano measured
Humanity's Last Exam (Artificial Analysis run)Not measured28.3%Only GPT-5.4 Nano measured
GPQA Diamond (Epoch AI run)Not measured78.5%Only GPT-5.4 Nano measured
ARC-AGINot measured51.5%Only GPT-5.4 Nano measured
ARC-AGI-2Not measured5.7%Only GPT-5.4 Nano measured
Chess puzzlesNot measured45.0%Only GPT-5.4 Nano measured
Mystery game puzzlesNot measured9.0%Only GPT-5.4 Nano measured
LMArena Text: hard prompts14071381Gemini 3.1 Flash Lite Preview
LMArena Text: expert13981396Gemini 3.1 Flash Lite Preview
LMArena Text: hard prompts in English14031387Gemini 3.1 Flash Lite Preview
LMArena Vision: diagrams12421210Gemini 3.1 Flash Lite Preview
LMArena Vision: homework12711225Gemini 3.1 Flash Lite Preview
Kagi LLM BenchmarkNot measured39.7%Only GPT-5.4 Nano measured
Neither model has a result on the other 7 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index21
Math benchmarks for Gemini 3.1 Flash Lite Preview and GPT-5.4 Nano
BenchmarkGemini 3.1 Flash Lite PreviewGPT-5.4 NanoLeader
AIME83.3%88.8%GPT-5.4 Nano
OTIS Mock AIMENot measured87.8%Only GPT-5.4 Nano measured
FrontierMath, tiers 1 to 3Not measured44.9%Only GPT-5.4 Nano measured
FrontierMath, tier 4Not measured12.2%Only GPT-5.4 Nano measured
ProofBenchNot measured5.0%Only GPT-5.4 Nano measured
LMArena Text: math14281405Gemini 3.1 Flash Lite Preview
LMArena Text: mathematical work14171409Gemini 3.1 Flash Lite Preview
Neither model has a result on the other 6 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index101
Knowledge benchmarks for Gemini 3.1 Flash Lite Preview and GPT-5.4 Nano
BenchmarkGemini 3.1 Flash Lite PreviewGPT-5.4 NanoLeader
MMLU Pro86.2%77.2%Gemini 3.1 Flash Lite Preview
LegalBench (Vals AI)83.8%77.9%Gemini 3.1 Flash Lite Preview
CaseLaw (Vals AI)55.0%51.9%Gemini 3.1 Flash Lite Preview
CorpFin (Vals AI)59.4%61.2%GPT-5.4 Nano
TaxEval (Vals AI)71.8%67.4%Gemini 3.1 Flash Lite Preview
MortgageTax (Vals AI)68.0%59.1%Gemini 3.1 Flash Lite Preview
MedCode (Vals AI)47.6%41.0%Gemini 3.1 Flash Lite Preview
SimpleQA VerifiedNot measured11.7%Only GPT-5.4 Nano measured
LMArena Text: science14251374Gemini 3.1 Flash Lite Preview
LMArena Text: medicine and healthcare14281369Gemini 3.1 Flash Lite Preview
LMArena Text: legal and government14181368Gemini 3.1 Flash Lite Preview
LMArena Text: business and finance13891366Gemini 3.1 Flash Lite Preview
FACTS Benchmark Suite51.4%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 5 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared
Web design benchmarks for Gemini 3.1 Flash Lite Preview and GPT-5.4 Nano
BenchmarkGemini 3.1 Flash Lite PreviewGPT-5.4 NanoLeader
Design Arena: websites1082Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Design Arena: UI components1069Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Design Arena: game dev1029Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Design Arena: data viz1045Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Design Arena: 3D1047Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Design Arena: all code categories1072Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Design Arena: SVG1052Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Design Arena: ASCII art1167Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index252
General benchmarks for Gemini 3.1 Flash Lite Preview and GPT-5.4 Nano
BenchmarkGemini 3.1 Flash Lite PreviewGPT-5.4 NanoLeader
SAGE (Vals AI)49.5%38.1%Gemini 3.1 Flash Lite Preview
MedScribe (Vals AI)63.9%77.1%GPT-5.4 Nano
Vals Multimodal Index41.4%47.6%GPT-5.4 Nano
IFBenchNot measured75.9%Only GPT-5.4 Nano measured
Long context reasoning (AA-LCR)Not measured76.7%Only GPT-5.4 Nano measured
DTBenchNot measured80.3%Only GPT-5.4 Nano measured
LMCANot measured36.9%Only GPT-5.4 Nano measured
LMArena Text14161372Gemini 3.1 Flash Lite Preview
LMArena Text: instruction following13771362Gemini 3.1 Flash Lite Preview
LMArena Text: creative writing14011315Gemini 3.1 Flash Lite Preview
LMArena Vision12401196Gemini 3.1 Flash Lite Preview
LMArena Text: English14141381Gemini 3.1 Flash Lite Preview
LMArena Text: non-English14101359Gemini 3.1 Flash Lite Preview
LMArena Text: Chinese14601391Gemini 3.1 Flash Lite Preview
LMArena Text: German14301368Gemini 3.1 Flash Lite Preview
LMArena Text: Japanese14131343Gemini 3.1 Flash Lite Preview
LMArena Text: Korean13921321Gemini 3.1 Flash Lite Preview
LMArena Text: French14241395Gemini 3.1 Flash Lite Preview
LMArena Text: Spanish14211371Gemini 3.1 Flash Lite Preview
LMArena Text: Russian14201363Gemini 3.1 Flash Lite Preview
LMArena Text: Polish14431366Gemini 3.1 Flash Lite Preview
LMArena Text: multi-turn14171382Gemini 3.1 Flash Lite Preview
LMArena Text: longer queries13941365Gemini 3.1 Flash Lite Preview
LMArena Text: writing and language14081338Gemini 3.1 Flash Lite Preview
LMArena Text: entertainment and media13861325Gemini 3.1 Flash Lite Preview
LMArena Vision: English12321202Gemini 3.1 Flash Lite Preview
LMArena Vision: Chinese12781232Gemini 3.1 Flash Lite Preview
LMArena Vision: reading text12461204Gemini 3.1 Flash Lite Preview
LMArena Vision: humor12661161Gemini 3.1 Flash Lite Preview
LMArena Vision: captioning1259Not measuredOnly Gemini 3.1 Flash Lite Preview measured
LMArena Vision: recognizing things13081141Gemini 3.1 Flash Lite Preview
LMArena Vision: creative writing12481159Gemini 3.1 Flash Lite Preview
Neither model has a result on the other 14 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 GPT-5.4 Nano
BenchmarkGemini 3.1 Flash Lite PreviewGPT-5.4 NanoLeader
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
GPT-5.4 Nano$0.0008Fits in one request

GPT-5.4 Nano costs less

Repository review

50K input + 3K output tokens

Gemini 3.1 Flash Lite Preview$0.017Fits in one request
GPT-5.4 Nano$0.014Fits in one request

GPT-5.4 Nano costs less

Agent loop

200K input + 10K output tokens

Gemini 3.1 Flash Lite Preview$0.065Fits in one request
GPT-5.4 Nano$0.052Fits in one request

GPT-5.4 Nano 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 GPT-5.4 Nano
SpecificationGoogle Gemini 3.1 Flash Lite PreviewOpenAI GPT-5.4 Nano
MakerGoogleOpenAI
WeightsNo public weights listedNo public weights listed
ReleasedMarch 3, 2026March 17, 2026
Context window1.05M400K
Input $/Mtok$0.25$0.20
Output $/Mtok$1.50$1.25
Coding index22.744.8
Independent measurements behind it32
Cost per solved task$0.18$0.14
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemini 3.1 Flash Lite Preview better than GPT-5.4 Nano for coding?

Pick GPT-5.4 Nano for coding: it scores 44.8 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 400K tokens) and work measured by LMArena Text: software and IT or GPQA Diamond, where it leads.

Which is cheaper, Gemini 3.1 Flash Lite Preview or GPT-5.4 Nano?

Gemini 3.1 Flash Lite Preview costs $0.25 per million input tokens and $1.50 per million output tokens; GPT-5.4 Nano costs $0.20 and $1.25. Per solved SWE-bench Verified task, Gemini 3.1 Flash Lite Preview costs $0.18 and GPT-5.4 Nano $0.14.

Which has the bigger context window, Gemini 3.1 Flash Lite Preview or GPT-5.4 Nano?

Gemini 3.1 Flash Lite Preview, with 1.05M tokens against 400K.

How many benchmarks is the Gemini 3.1 Flash Lite Preview vs GPT-5.4 Nano comparison based on?

63 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 GPT-5.4 Nano'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-3-1-flash-lite-preview-vs-gpt-5-4-nano">LLMBenchmark.ai, Gemini 3.1 Flash Lite Preview vs GPT-5.4 Nano</a></p>