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Gemini 3.5 Flash Lite vs GPT-4.1 Nano

Updated October 21, 2026. 48 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace Gemini 3.5 Flash Lite Replace GPT-4.1 Nano
Gemini 3.5 Flash LiteGoogle
Coding
33.6
Overall
22.2
Output $/M
$2.50
48
GPT-4.1 NanoOpenAI
Coding
8.9
Overall
7.8
Output $/M
$0.40
0
vs boards won of 48 shared

Decision reading

Pick Gemini 3.5 Flash Lite for coding: it scores 33.6 on the Vibe Coding Index against 8.9 for GPT-4.1 Nano.

Pick GPT-4.1 Nano when output tokens cost 6.3x less.

Model AGemini 3.5 Flash LiteGoogle33.6/1001 independent benchmark$0.41 per solved taskModel BGPT-4.1 NanoOpenAI8.9/1001 independent benchmarkNo cost per solved task
Shared results
48
Gemini 3.5 Flash Lite only
35
GPT-4.1 Nano only
21
Like-for-like categories
6 of 9

Shared results can support a head-to-head reading. Results only one model has describe coverage, not superiority.

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 33.6 from 1 benchmark, GPT-4.1 Nano 8.9 from 1 benchmark.
Widest category
Math, 31.8 points apart on average over 3 shared benchmarks.
Widest single gap
Long context reasoning (AA-LCR): Gemini 3.5 Flash Lite 76.0% against GPT-4.1 Nano 20.3%, 55.7 points apart on a 0 to 100 scale.
Output price
Gemini 3.5 Flash Lite $2.50 against GPT-4.1 Nano $0.40 per million output tokens, 6.3x apart.
Context window
Gemini 3.5 Flash Lite takes 1.05M tokens, GPT-4.1 Nano 1.05M.

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-4.1 NanoTies
Coding50
Intelligence20
Reasoning110
Math30
Knowledge90
General180
All shared boards480
CodingLike-for-likeFour of these boards feed the Vibe Coding Index50
Coding benchmarks for Gemini 3.5 Flash Lite and GPT-4.1 Nano
BenchmarkGemini 3.5 Flash LiteGPT-4.1 NanoLeader
Aider polyglotNot measured8.9%Only GPT-4.1 Nano measured
LMArena WebDev1435Not measuredOnly Gemini 3.5 Flash Lite measured
AA Coding Index49.311.1Gemini 3.5 Flash Lite
LiveCodeBench (Vals AI)79.0%42.7%Gemini 3.5 Flash Lite
SWE-bench Verified (Vals AI)75.0%Not measuredOnly Gemini 3.5 Flash Lite measured
Vibe Code Bench (Vals AI)37.2%Not measuredOnly Gemini 3.5 Flash Lite measured
Code migration (Vals AI)6.2%Not measuredOnly Gemini 3.5 Flash Lite measured
ProgramBench (Vals AI)0.0%Not measuredOnly Gemini 3.5 Flash Lite measured
Terminal-Bench 2.1 (Vals AI)50.2%Not measuredOnly Gemini 3.5 Flash Lite measured
CyberBench (Vals AI)59.1%Not measuredOnly Gemini 3.5 Flash Lite measured
LiveCodeBench (Artificial Analysis run)Not measured32.6%Only GPT-4.1 Nano measured
SciCode41.3%Not measuredOnly Gemini 3.5 Flash Lite measured
Terminal-Bench Hard (Artificial Analysis run)Not measured3.8%Only GPT-4.1 Nano measured
WeirdML39.0%19.0%Gemini 3.5 Flash Lite
ALE-Bench765.3Not measuredOnly Gemini 3.5 Flash Lite measured
LMArena Text: coding14531306Gemini 3.5 Flash Lite
LMArena Text: software and IT14511305Gemini 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
Neither model has a result on the other 19 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for Gemini 3.5 Flash Lite and GPT-4.1 Nano
BenchmarkGemini 3.5 Flash LiteGPT-4.1 NanoLeader
AA Intelligence Index22.27.8Gemini 3.5 Flash Lite
Epoch Capabilities Index144.9129.5Gemini 3.5 Flash Lite
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index7 boards, none shared
Agentic work benchmarks for Gemini 3.5 Flash Lite and GPT-4.1 Nano
BenchmarkGemini 3.5 Flash LiteGPT-4.1 NanoLeader
AA Agentic Index14.3Not measuredOnly Gemini 3.5 Flash Lite measured
Finance Agent (Vals AI)47.4%Not measuredOnly Gemini 3.5 Flash Lite measured
Tax Agent Bench (Vals AI)7.2%Not measuredOnly Gemini 3.5 Flash Lite measured
Legal Research Bench (Vals AI)13.9%Not measuredOnly Gemini 3.5 Flash Lite measured
Excel Modeling Benchmark (Vals AI)43.2%Not measuredOnly Gemini 3.5 Flash Lite measured
τ²-Bench TelecomNot measured17.3%Only GPT-4.1 Nano measured
APEX-Agents29.3%Not measuredOnly Gemini 3.5 Flash Lite measured
Neither model has a result on the other 32 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index110
Reasoning benchmarks for Gemini 3.5 Flash Lite and GPT-4.1 Nano
BenchmarkGemini 3.5 Flash LiteGPT-4.1 NanoLeader
GPQA Diamond83.8%50.8%Gemini 3.5 Flash Lite
MMMU Pro (Vals AI)83.6%55.0%Gemini 3.5 Flash Lite
GPQA Diamond (Artificial Analysis run)83.8%51.2%Gemini 3.5 Flash Lite
Humanity's Last Exam (Artificial Analysis run)18.8%3.8%Gemini 3.5 Flash Lite
GPQA Diamond (Epoch AI run)83.3%48.9%Gemini 3.5 Flash Lite
ARC-AGI53.5%0.0%Gemini 3.5 Flash Lite
ARC-AGI-210.3%0.0%Gemini 3.5 Flash Lite
Chess puzzles21.0%0.0%Gemini 3.5 Flash Lite
Mystery game puzzles19.0%Not measuredOnly Gemini 3.5 Flash Lite measured
LMArena Text: hard prompts14411286Gemini 3.5 Flash Lite
LMArena Text: expert14341271Gemini 3.5 Flash Lite
LMArena Text: hard prompts in English14401293Gemini 3.5 Flash Lite
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 7 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index30
Math benchmarks for Gemini 3.5 Flash Lite and GPT-4.1 Nano
BenchmarkGemini 3.5 Flash LiteGPT-4.1 NanoLeader
AIMENot measured26.5%Only GPT-4.1 Nano measured
MATH 500 (Vals AI)Not measured80.2%Only GPT-4.1 Nano measured
MGSM (Vals AI)Not measured69.3%Only GPT-4.1 Nano measured
AA Math IndexNot measured24.0Only GPT-4.1 Nano measured
AIME 2025 (Artificial Analysis run)Not measured24.0%Only GPT-4.1 Nano measured
OTIS Mock AIME71.1%28.9%Gemini 3.5 Flash Lite
FrontierMath, tiers 1 to 326.0%Not measuredOnly Gemini 3.5 Flash Lite measured
FrontierMath, tier 40.0%Not measuredOnly Gemini 3.5 Flash Lite measured
ProofBench13.0%Not measuredOnly Gemini 3.5 Flash Lite measured
MATH level 5Not measured70.0%Only GPT-4.1 Nano measured
LMArena Text: math14341274Gemini 3.5 Flash Lite
LMArena Text: mathematical work14331274Gemini 3.5 Flash Lite
Neither model has a result on the other 1 board here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index90
Knowledge benchmarks for Gemini 3.5 Flash Lite and GPT-4.1 Nano
BenchmarkGemini 3.5 Flash LiteGPT-4.1 NanoLeader
MMLU Pro85.8%63.5%Gemini 3.5 Flash Lite
LegalBench (Vals AI)84.1%61.1%Gemini 3.5 Flash Lite
CorpFin (Vals AI)60.7%42.1%Gemini 3.5 Flash Lite
TaxEval (Vals AI)72.6%60.8%Gemini 3.5 Flash Lite
MortgageTax (Vals AI)68.7%52.8%Gemini 3.5 Flash Lite
MedQA (Vals AI)Not measured68.2%Only GPT-4.1 Nano measured
MedCode (Vals AI)43.5%Not measuredOnly Gemini 3.5 Flash Lite measured
MMLU Pro (Artificial Analysis run)Not measured65.7%Only GPT-4.1 Nano measured
SimpleQA VerifiedNot measured6.0%Only GPT-4.1 Nano measured
LMArena Text: science14511297Gemini 3.5 Flash Lite
LMArena Text: medicine and healthcare14381276Gemini 3.5 Flash Lite
LMArena Text: legal and government14311300Gemini 3.5 Flash Lite
LMArena Text: business and finance14231267Gemini 3.5 Flash Lite
Neither model has a result on the other 4 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index6 boards, none shared
Web design benchmarks for Gemini 3.5 Flash Lite and GPT-4.1 Nano
BenchmarkGemini 3.5 Flash LiteGPT-4.1 NanoLeader
Design Arena: websitesNot measured973Only GPT-4.1 Nano measured
Design Arena: UI componentsNot measured916Only GPT-4.1 Nano measured
Design Arena: game devNot measured971Only GPT-4.1 Nano measured
Design Arena: data vizNot measured891Only GPT-4.1 Nano measured
Design Arena: 3DNot measured925Only GPT-4.1 Nano measured
Design Arena: all code categoriesNot measured963Only GPT-4.1 Nano measured
Neither model has a result on the other 3 boards here
GeneralLike-for-likePublic boards, shown as published, kept out of the index180
General benchmarks for Gemini 3.5 Flash Lite and GPT-4.1 Nano
BenchmarkGemini 3.5 Flash LiteGPT-4.1 NanoLeader
Public Benefits Bench (Vals AI)51.8%Not measuredOnly Gemini 3.5 Flash Lite measured
SAGE (Vals AI)47.3%Not measuredOnly Gemini 3.5 Flash Lite measured
MedScribe (Vals AI)70.9%Not measuredOnly Gemini 3.5 Flash Lite measured
IFBenchNot measured32.0%Only GPT-4.1 Nano measured
Long context reasoning (AA-LCR)76.0%20.3%Gemini 3.5 Flash Lite
DTBench83.5%52.5%Gemini 3.5 Flash Lite
LMCA37.6%5.5%Gemini 3.5 Flash Lite
Fiction.LiveBenchNot measured25.0%Only GPT-4.1 Nano measured
LMArena Text14351285Gemini 3.5 Flash Lite
LMArena Text: instruction following14191266Gemini 3.5 Flash Lite
LMArena Text: creative writing14211260Gemini 3.5 Flash Lite
LMArena Vision12691063Gemini 3.5 Flash Lite
LMArena Text: English14381303Gemini 3.5 Flash Lite
LMArena Text: non-English14271260Gemini 3.5 Flash Lite
LMArena Text: Chinese14681270Gemini 3.5 Flash Lite
LMArena Text: German14541288Gemini 3.5 Flash Lite
LMArena Text: Japanese14261198Gemini 3.5 Flash Lite
LMArena Text: Korean1407Not measuredOnly Gemini 3.5 Flash Lite measured
LMArena Text: French1451Not measuredOnly Gemini 3.5 Flash Lite measured
LMArena Text: Spanish1441Not measuredOnly Gemini 3.5 Flash Lite measured
LMArena Text: Russian14431261Gemini 3.5 Flash Lite
LMArena Text: Polish1437Not measuredOnly Gemini 3.5 Flash Lite measured
LMArena Text: multi-turn14451277Gemini 3.5 Flash Lite
LMArena Text: longer queries14351283Gemini 3.5 Flash Lite
LMArena Text: writing and language14281261Gemini 3.5 Flash Lite
LMArena Text: entertainment and media14141243Gemini 3.5 Flash Lite
LMArena Vision: English12691101Gemini 3.5 Flash Lite
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 15 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-4.1 Nano
BenchmarkGemini 3.5 Flash LiteGPT-4.1 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-4.1 Nano$0.0003Fits in one request

GPT-4.1 Nano costs less

Repository review

50K input + 3K output tokens

Gemini 3.5 Flash Lite$0.022Fits in one request
GPT-4.1 Nano$0.0062Fits in one request

GPT-4.1 Nano costs less

Agent loop

200K input + 10K output tokens

Gemini 3.5 Flash Lite$0.085Fits in one request
GPT-4.1 Nano$0.024Fits in one request

GPT-4.1 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-4.1 Nano
SpecificationGoogle Gemini 3.5 Flash LiteOpenAI GPT-4.1 Nano
MakerGoogleOpenAI
WeightsNo public weights listedNo public weights listed
ReleasedJuly 21, 2026April 14, 2025
Context window1.05M1.05M
Input $/Mtok$0.30$0.10
Output $/Mtok$2.50$0.40
Coding index33.68.9
Independent measurements behind it11
Cost per solved task$0.41Not computable
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemini 3.5 Flash Lite better than GPT-4.1 Nano for coding?

Pick Gemini 3.5 Flash Lite for coding: it scores 33.6 on the Vibe Coding Index against 8.9 for GPT-4.1 Nano. Pick GPT-4.1 Nano when output tokens cost 6.3x less.

Which is cheaper, Gemini 3.5 Flash Lite or GPT-4.1 Nano?

Gemini 3.5 Flash Lite costs $0.30 per million input tokens and $2.50 per million output tokens; GPT-4.1 Nano costs $0.10 and $0.40. Cost per solved task is known for Gemini 3.5 Flash Lite only.

Which has the bigger context window, Gemini 3.5 Flash Lite or GPT-4.1 Nano?

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

How many benchmarks is the Gemini 3.5 Flash Lite vs GPT-4.1 Nano comparison based on?

48 benchmarks have a result for both models as of October 21, 2026. Gemini 3.5 Flash Lite's coding index rests on 1 independent benchmark and GPT-4.1 Nano's on 1. Where only one model has a result, the page says so instead of naming a winner.

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