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Gemini 3.5 Flash Lite vs GPT-5.4 Nano

Gemini 3.5 Flash Lite leads GPT-5.4 Nano on coding, 49.0 to 44.8 on the Vibe Coding Index, and GPT-5.4 Nano costs 2.0x less per output token ($1.25 vs $2.50 per million). Updated October 22, 2026; 76 benchmarks have a result for both.

Replace Gemini 3.5 Flash Lite Replace GPT-5.4 Nano
Gemini 3.5 Flash LiteGoogle
Coding
49.0
Overall
49.8
Output $/M
$2.50
59
GPT-5.4 NanoOpenAI
Coding
44.8
Overall
45.7
Output $/M
$1.25
17
vs boards won of 76 shared

Gemini 3.5 Flash Lite or GPT-5.4 Nano: which to pick

Pick Gemini 3.5 Flash Lite for coding: it scores 49.0 on the Vibe Coding Index against 44.8 for GPT-5.4 Nano.

Pick GPT-5.4 Nano for output tokens 2.0x cheaper ($1.25 vs $2.50 per million) and a lower cost per solved task ($0.14 against $0.41).

Model AGemini 3.5 Flash LiteGoogle49.0/1003 independent benchmarks$0.41 per solved taskModel BGPT-5.4 NanoOpenAI44.8/1002 independent benchmarks$0.14 per solved task
Shared results
76
Gemini 3.5 Flash Lite only
9
GPT-5.4 Nano only
9
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, GPT-5.4 Nano 44.8 from 2 benchmarks.
Widest category
General, 11.4 points apart on average over 28 shared benchmarks.
Widest single gap
Chess puzzles: Gemini 3.5 Flash Lite 21.0% against GPT-5.4 Nano 45.0%, 24.0 points apart on a 0 to 100 scale.
Output price
Gemini 3.5 Flash Lite $2.50 against GPT-5.4 Nano $1.25 per million output tokens, 2.0x apart.
Context window
Gemini 3.5 Flash Lite 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 3.5 Flash LiteBarsGPT-5.4 NanoTies
Coding56
Intelligence11
Agentic work32
Reasoning122
Math33
Knowledge91
General262
All shared boards5917
CodingLike-for-likeSix of these boards feed the Vibe Coding Index56
Coding benchmarks for Gemini 3.5 Flash Lite and GPT-5.4 Nano
BenchmarkGemini 3.5 Flash LiteGPT-5.4 NanoLeader
LMArena WebDev1435Not measuredOnly Gemini 3.5 Flash Lite measured
AA Coding Index49.356.1GPT-5.4 Nano
LiveCodeBench (Vals AI)79.0%84.0%GPT-5.4 Nano
SWE-bench Verified (Vals AI)75.0%69.8%Gemini 3.5 Flash Lite
Vibe Code Bench (Vals AI)37.2%26.1%Gemini 3.5 Flash Lite
Code migration (Vals AI)6.2%14.5%GPT-5.4 Nano
ProgramBench (Vals AI)0.0%Not measuredOnly Gemini 3.5 Flash Lite measured
Terminal-Bench 2.1 (Vals AI)50.2%41.6%Gemini 3.5 Flash Lite
CyberBench (Vals AI)59.1%Not measuredOnly Gemini 3.5 Flash Lite measured
SciCode41.3%47.2%GPT-5.4 Nano
Terminal-Bench Hard (Artificial Analysis run)Not measured42.4%Only GPT-5.4 Nano measured
WeirdML39.0%49.2%GPT-5.4 Nano
ALE-Bench765.31004.5GPT-5.4 Nano
LMArena Text: coding14531404Gemini 3.5 Flash Lite
LMArena Text: software and IT14511402Gemini 3.5 Flash Lite
LMArena WebDev: React1408Not measuredOnly Gemini 3.5 Flash Lite measured
LMArena WebDev: from an image1448Not measuredOnly Gemini 3.5 Flash Lite measured
SciCode6.2%Not measuredOnly Gemini 3.5 Flash Lite measured
Neither model has a result on the other 21 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index11
Intelligence benchmarks for Gemini 3.5 Flash Lite and GPT-5.4 Nano
BenchmarkGemini 3.5 Flash LiteGPT-5.4 NanoLeader
AA Intelligence Index22.220.7Gemini 3.5 Flash Lite
Epoch Capabilities Index144.9146.0GPT-5.4 Nano
Agentic workLike-for-likePublic boards, shown as published, kept out of the index32
Agentic work benchmarks for Gemini 3.5 Flash Lite and GPT-5.4 Nano
BenchmarkGemini 3.5 Flash LiteGPT-5.4 NanoLeader
AA Agentic Index14.316.0GPT-5.4 Nano
Finance Agent (Vals AI)47.4%38.2%Gemini 3.5 Flash Lite
Tax Agent Bench (Vals AI)7.2%5.0%Gemini 3.5 Flash Lite
Legal Research Bench (Vals AI)13.9%6.3%Gemini 3.5 Flash Lite
Excel Modeling Benchmark (Vals AI)43.2%44.8%GPT-5.4 Nano
τ²-Bench TelecomNot measured76.0%Only GPT-5.4 Nano measured
APEX-Agents29.3%Not measuredOnly Gemini 3.5 Flash Lite measured
Neither model has a result on the other 34 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index122
Reasoning benchmarks for Gemini 3.5 Flash Lite and GPT-5.4 Nano
BenchmarkGemini 3.5 Flash LiteGPT-5.4 NanoLeader
GPQA Diamond83.8%77.5%Gemini 3.5 Flash Lite
MMMU Pro (Vals AI)83.6%73.6%Gemini 3.5 Flash Lite
GPQA Diamond (Artificial Analysis run)83.8%81.7%Gemini 3.5 Flash Lite
Humanity's Last Exam (Artificial Analysis run)18.8%28.3%GPT-5.4 Nano
GPQA Diamond (Epoch AI run)83.3%78.5%Gemini 3.5 Flash Lite
ARC-AGI53.5%51.5%Gemini 3.5 Flash Lite
ARC-AGI-210.3%5.7%Gemini 3.5 Flash Lite
Chess puzzles21.0%45.0%GPT-5.4 Nano
Mystery game puzzles19.0%9.0%Gemini 3.5 Flash Lite
LMArena Text: hard prompts14411381Gemini 3.5 Flash Lite
LMArena Text: expert14341396Gemini 3.5 Flash Lite
LMArena Text: hard prompts in English14401387Gemini 3.5 Flash Lite
LMArena Vision: diagrams12841210Gemini 3.5 Flash Lite
LMArena Vision: homework12911225Gemini 3.5 Flash Lite
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 index33
Math benchmarks for Gemini 3.5 Flash Lite and GPT-5.4 Nano
BenchmarkGemini 3.5 Flash LiteGPT-5.4 NanoLeader
AIMENot measured88.8%Only GPT-5.4 Nano measured
OTIS Mock AIME71.1%87.8%GPT-5.4 Nano
FrontierMath, tiers 1 to 326.0%44.9%GPT-5.4 Nano
FrontierMath, tier 40.0%12.2%GPT-5.4 Nano
ProofBench13.0%5.0%Gemini 3.5 Flash Lite
LMArena Text: math14341405Gemini 3.5 Flash Lite
LMArena Text: mathematical work14331409Gemini 3.5 Flash Lite
Neither model has a result on the other 6 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index91
Knowledge benchmarks for Gemini 3.5 Flash Lite and GPT-5.4 Nano
BenchmarkGemini 3.5 Flash LiteGPT-5.4 NanoLeader
MMLU Pro85.8%77.2%Gemini 3.5 Flash Lite
LegalBench (Vals AI)84.1%77.9%Gemini 3.5 Flash Lite
CaseLaw (Vals AI)Not measured51.9%Only GPT-5.4 Nano measured
CorpFin (Vals AI)60.7%61.2%GPT-5.4 Nano
TaxEval (Vals AI)72.6%67.4%Gemini 3.5 Flash Lite
MortgageTax (Vals AI)68.7%59.1%Gemini 3.5 Flash Lite
MedCode (Vals AI)43.5%41.0%Gemini 3.5 Flash Lite
SimpleQA VerifiedNot measured11.7%Only GPT-5.4 Nano measured
LMArena Text: science14511374Gemini 3.5 Flash Lite
LMArena Text: medicine and healthcare14381369Gemini 3.5 Flash Lite
LMArena Text: legal and government14311368Gemini 3.5 Flash Lite
LMArena Text: business and finance14231366Gemini 3.5 Flash Lite
FACTS Benchmark Suite53.5%Not measuredOnly Gemini 3.5 Flash Lite measured
Neither model has a result on the other 5 boards here
Web designNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Web design benchmarks for Gemini 3.5 Flash Lite and GPT-5.4 Nano
BenchmarkGemini 3.5 Flash LiteGPT-5.4 NanoLeader
Neither model has a result on 9 boards here
GeneralLike-for-likePublic boards, shown as published, kept out of the index262
General benchmarks for Gemini 3.5 Flash Lite and GPT-5.4 Nano
BenchmarkGemini 3.5 Flash LiteGPT-5.4 NanoLeader
Public Benefits Bench (Vals AI)51.8%Not measuredOnly Gemini 3.5 Flash Lite measured
SAGE (Vals AI)47.3%38.1%Gemini 3.5 Flash Lite
MedScribe (Vals AI)70.9%77.1%GPT-5.4 Nano
Vals Multimodal IndexNot measured47.6%Only GPT-5.4 Nano measured
IFBenchNot measured75.9%Only GPT-5.4 Nano measured
Long context reasoning (AA-LCR)76.0%76.7%GPT-5.4 Nano
DTBench83.5%80.3%Gemini 3.5 Flash Lite
LMCA37.6%36.9%Gemini 3.5 Flash Lite
LMArena Text14351372Gemini 3.5 Flash Lite
LMArena Text: instruction following14191362Gemini 3.5 Flash Lite
LMArena Text: creative writing14211315Gemini 3.5 Flash Lite
LMArena Vision12691196Gemini 3.5 Flash Lite
LMArena Text: English14381381Gemini 3.5 Flash Lite
LMArena Text: non-English14271359Gemini 3.5 Flash Lite
LMArena Text: Chinese14681391Gemini 3.5 Flash Lite
LMArena Text: German14541368Gemini 3.5 Flash Lite
LMArena Text: Japanese14261343Gemini 3.5 Flash Lite
LMArena Text: Korean14071321Gemini 3.5 Flash Lite
LMArena Text: French14511395Gemini 3.5 Flash Lite
LMArena Text: Spanish14411371Gemini 3.5 Flash Lite
LMArena Text: Russian14431363Gemini 3.5 Flash Lite
LMArena Text: Polish14371366Gemini 3.5 Flash Lite
LMArena Text: multi-turn14451382Gemini 3.5 Flash Lite
LMArena Text: longer queries14351365Gemini 3.5 Flash Lite
LMArena Text: writing and language14281338Gemini 3.5 Flash Lite
LMArena Text: entertainment and media14141325Gemini 3.5 Flash Lite
LMArena Vision: English12691202Gemini 3.5 Flash Lite
LMArena Vision: Chinese13111232Gemini 3.5 Flash Lite
LMArena Vision: reading text12801204Gemini 3.5 Flash Lite
LMArena Vision: humor12871161Gemini 3.5 Flash Lite
LMArena Vision: recognizing thingsNot measured1141Only GPT-5.4 Nano measured
LMArena Vision: creative writing12601159Gemini 3.5 Flash Lite
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 3.5 Flash Lite and GPT-5.4 Nano
BenchmarkGemini 3.5 Flash LiteGPT-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 3.5 Flash Lite$0.0015Fits 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 3.5 Flash Lite$0.022Fits 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 3.5 Flash Lite$0.085Fits 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 3.5 Flash Lite and GPT-5.4 Nano
SpecificationGoogle Gemini 3.5 Flash LiteOpenAI GPT-5.4 Nano
MakerGoogleOpenAI
WeightsNo public weights listedNo public weights listed
ReleasedJuly 21, 2026March 17, 2026
Context window1.05M400K
Input $/Mtok$0.30$0.20
Output $/Mtok$2.50$1.25
Coding index49.044.8
Independent measurements behind it32
Cost per solved task$0.41$0.14
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemini 3.5 Flash Lite better than GPT-5.4 Nano for coding?

Pick Gemini 3.5 Flash Lite for coding: it scores 49.0 on the Vibe Coding Index against 44.8 for GPT-5.4 Nano. Pick GPT-5.4 Nano for output tokens 2.0x cheaper ($1.25 vs $2.50 per million) and a lower cost per solved task ($0.14 against $0.41).

Which is cheaper, Gemini 3.5 Flash Lite or GPT-5.4 Nano?

Gemini 3.5 Flash Lite costs $0.30 per million input tokens and $2.50 per million output tokens; GPT-5.4 Nano costs $0.20 and $1.25. Per solved SWE-bench Verified task, Gemini 3.5 Flash Lite costs $0.41 and GPT-5.4 Nano $0.14.

Which has the bigger context window, Gemini 3.5 Flash Lite or GPT-5.4 Nano?

Gemini 3.5 Flash Lite, with 1.05M tokens against 400K.

How many benchmarks is the Gemini 3.5 Flash Lite vs GPT-5.4 Nano comparison based on?

76 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 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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