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GPT-5.4 vs GPT-5.4 Nano

GPT-5.4 leads GPT-5.4 Nano on coding, 64.4 to 44.8 on the Vibe Coding Index, and GPT-5.4 Nano costs 12.0x less per output token ($1.25 vs $15.00 per million). Updated October 22, 2026; 77 benchmarks have a result for both.

Replace GPT-5.4 Replace GPT-5.4 Nano
GPT-5.4OpenAI
Coding
64.4
Overall
69.6
Output $/M
$15.00
76
GPT-5.4 NanoOpenAI
Coding
44.8
Overall
45.7
Output $/M
$1.25
1
vs boards won of 77 shared

GPT-5.4 or GPT-5.4 Nano: which to pick

Pick GPT-5.4 for coding: it scores 64.4 on the Vibe Coding Index against 44.8 for GPT-5.4 Nano.

Pick GPT-5.4 Nano for output tokens 12.0x cheaper ($1.25 vs $15.00 per million) and a lower cost per solved task ($0.14 against $1.02).

Model AGPT-5.4OpenAI64.4/1003 independent benchmarks$1.02 per solved taskModel BGPT-5.4 NanoOpenAI44.8/1002 independent benchmarks$0.14 per solved task
Shared results
77
GPT-5.4 only
33
GPT-5.4 Nano only
8
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
GPT-5.4 64.4 from 3 benchmarks, GPT-5.4 Nano 44.8 from 2 benchmarks.
Widest category
Math, 24.0 points apart on average over 7 shared benchmarks.
Widest single gap
ARC-AGI-2: GPT-5.4 74.0% against GPT-5.4 Nano 5.7%, 68.3 points apart on a 0 to 100 scale.
Output price
GPT-5.4 $15.00 against GPT-5.4 Nano $1.25 per million output tokens, 12.0x apart.
Context window
GPT-5.4 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
CategoryGPT-5.4BarsGPT-5.4 NanoTies
Coding100
Intelligence20
Agentic work10
Reasoning150
Math70
Knowledge120
General291
All shared boards761
CodingLike-for-likeSix of these boards feed the Vibe Coding Index100
Coding benchmarks for GPT-5.4 and GPT-5.4 Nano
BenchmarkGPT-5.4GPT-5.4 NanoLeader
LMArena WebDev1464Not measuredOnly GPT-5.4 measured
AA Coding Index71.156.1GPT-5.4
LiveCodeBench (Vals AI)84.1%84.0%GPT-5.4
SWE-bench Verified (Vals AI)78.2%69.8%GPT-5.4
Vibe Code Bench (Vals AI)67.4%26.1%GPT-5.4
Code migration (Vals AI)35.0%14.5%GPT-5.4
ProgramBench (Vals AI)0.5%Not measuredOnly GPT-5.4 measured
Terminal-Bench 2.1 (Vals AI)Not measured41.6%Only GPT-5.4 Nano measured
SkillsBench (Vals AI)51.7%Not measuredOnly GPT-5.4 measured
SciCodeNot measured47.2%Only GPT-5.4 Nano measured
Terminal-Bench Hard (Artificial Analysis run)57.6%42.4%GPT-5.4
Terminal-Bench81.8%Not measuredOnly GPT-5.4 measured
GSO-Bench31.4%Not measuredOnly GPT-5.4 measured
WeirdML77.7%49.2%GPT-5.4
MirrorCode15.6%Not measuredOnly GPT-5.4 measured
ALE-Bench1607.01004.5GPT-5.4
LMArena Text: coding14961404GPT-5.4
LMArena Text: software and IT14911402GPT-5.4
LMArena WebDev: React1454Not measuredOnly GPT-5.4 measured
LMArena WebDev: HTML1478Not measuredOnly GPT-5.4 measured
LMArena WebDev: from an image1436Not measuredOnly GPT-5.4 measured
Neither model has a result on the other 18 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for GPT-5.4 and GPT-5.4 Nano
BenchmarkGPT-5.4GPT-5.4 NanoLeader
AA Intelligence Index39.020.7GPT-5.4
Epoch Capabilities Index157.3146.0GPT-5.4
Agentic workLike-for-likePublic boards, shown as published, kept out of the index10
Agentic work benchmarks for GPT-5.4 and GPT-5.4 Nano
BenchmarkGPT-5.4GPT-5.4 NanoLeader
AA Agentic IndexNot measured16.0Only GPT-5.4 Nano measured
Design Arena: agents building web apps1059Not measuredOnly GPT-5.4 measured
Design Arena: agents building full-stack apps1017Not measuredOnly GPT-5.4 measured
Design Arena: agents building mobile apps1087Not measuredOnly GPT-5.4 measured
Design Arena: agents building Android apps1031Not measuredOnly GPT-5.4 measured
Design Arena: agents building Godot games1135Not measuredOnly GPT-5.4 measured
Finance Agent (Vals AI)Not measured38.2%Only GPT-5.4 Nano measured
Tax Agent Bench (Vals AI)Not measured5.0%Only GPT-5.4 Nano measured
Legal Research Bench (Vals AI)Not measured6.3%Only GPT-5.4 Nano measured
Excel Modeling Benchmark (Vals AI)Not measured44.8%Only GPT-5.4 Nano measured
τ²-Bench Telecom87.1%76.0%GPT-5.4
APEX-Agents52.4%Not measuredOnly GPT-5.4 measured
METR time horizons74.3%Not measuredOnly GPT-5.4 measured
DeepResearch Bench35.1%Not measuredOnly GPT-5.4 measured
PostTrainBench19.0%Not measuredOnly GPT-5.4 measured
Vending-Bench 2$6,144Not measuredOnly GPT-5.4 measured
Neither model has a result on the other 25 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index150
Reasoning benchmarks for GPT-5.4 and GPT-5.4 Nano
BenchmarkGPT-5.4GPT-5.4 NanoLeader
GPQA Diamond91.7%77.5%GPT-5.4
MMMU Pro (Vals AI)87.5%73.6%GPT-5.4
GPQA Diamond (Artificial Analysis run)92.0%81.7%GPT-5.4
Humanity's Last Exam (Artificial Analysis run)43.7%28.3%GPT-5.4
GPQA Diamond (Epoch AI run)93.3%78.5%GPT-5.4
ARC-AGI93.7%51.5%GPT-5.4
ARC-AGI-274.0%5.7%GPT-5.4
Chess puzzles48.0%45.0%GPT-5.4
Mystery game puzzles37.0%9.0%GPT-5.4
EBR-bench25.4%Not measuredOnly GPT-5.4 measured
LMArena Text: hard prompts14851381GPT-5.4
LMArena Text: expert15071396GPT-5.4
LMArena Text: hard prompts in English14791387GPT-5.4
LMArena Vision: diagrams13271210GPT-5.4
LMArena Vision: homework13361225GPT-5.4
Kagi LLM Benchmark63.8%39.7%GPT-5.4
Neither model has a result on the other 6 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index70
Math benchmarks for GPT-5.4 and GPT-5.4 Nano
BenchmarkGPT-5.4GPT-5.4 NanoLeader
AIME96.7%88.8%GPT-5.4
OTIS Mock AIME97.8%87.8%GPT-5.4
FrontierMath, tiers 1 to 378.6%44.9%GPT-5.4
FrontierMath, tier 449.0%12.2%GPT-5.4
ProofBench56.0%5.0%GPT-5.4
LMArena Text: math14881405GPT-5.4
LMArena Text: mathematical work14971409GPT-5.4
Neither model has a result on the other 6 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index120
Knowledge benchmarks for GPT-5.4 and GPT-5.4 Nano
BenchmarkGPT-5.4GPT-5.4 NanoLeader
MMLU Pro87.5%77.2%GPT-5.4
LegalBench (Vals AI)86.0%77.9%GPT-5.4
CaseLaw (Vals AI)63.8%51.9%GPT-5.4
CorpFin (Vals AI)65.3%61.2%GPT-5.4
TaxEval (Vals AI)74.0%67.4%GPT-5.4
MortgageTax (Vals AI)68.3%59.1%GPT-5.4
MedQA (Vals AI)96.1%Not measuredOnly GPT-5.4 measured
MedCode (Vals AI)41.3%41.0%GPT-5.4
SimpleQA Verified45.1%11.7%GPT-5.4
LMArena Text: science14791374GPT-5.4
LMArena Text: medicine and healthcare14581369GPT-5.4
LMArena Text: legal and government14861368GPT-5.4
LMArena Text: business and finance14741366GPT-5.4
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 GPT-5.4 and GPT-5.4 Nano
BenchmarkGPT-5.4GPT-5.4 NanoLeader
Design Arena: websites1198Not measuredOnly GPT-5.4 measured
Design Arena: UI components1212Not measuredOnly GPT-5.4 measured
Design Arena: game dev1194Not measuredOnly GPT-5.4 measured
Design Arena: data viz1196Not measuredOnly GPT-5.4 measured
Design Arena: 3D1065Not measuredOnly GPT-5.4 measured
Design Arena: all code categories1179Not measuredOnly GPT-5.4 measured
Design Arena: SVG1141Not measuredOnly GPT-5.4 measured
Design Arena: ASCII art1188Not measuredOnly GPT-5.4 measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index291
General benchmarks for GPT-5.4 and GPT-5.4 Nano
BenchmarkGPT-5.4GPT-5.4 NanoLeader
SAGE (Vals AI)43.3%38.1%GPT-5.4
MedScribe (Vals AI)77.5%77.1%GPT-5.4
Vals Multimodal IndexNot measured47.6%Only GPT-5.4 Nano measured
IFBench73.9%75.9%GPT-5.4 Nano
Long context reasoning (AA-LCR)82.0%76.7%GPT-5.4
DTBench94.4%80.3%GPT-5.4
LMCA52.0%36.9%GPT-5.4
CL-bench27.9%Not measuredOnly GPT-5.4 measured
Furniture assembly37.5%Not measuredOnly GPT-5.4 measured
CL-bench Life21.7%Not measuredOnly GPT-5.4 measured
LMArena Text14691372GPT-5.4
LMArena Text: instruction following14691362GPT-5.4
LMArena Text: creative writing14391315GPT-5.4
LMArena Vision13031196GPT-5.4
LMArena Text: English14671381GPT-5.4
LMArena Text: non-English14651359GPT-5.4
LMArena Text: Chinese15201391GPT-5.4
LMArena Text: German14721368GPT-5.4
LMArena Text: Japanese14851343GPT-5.4
LMArena Text: Korean14491321GPT-5.4
LMArena Text: French14931395GPT-5.4
LMArena Text: Spanish14521371GPT-5.4
LMArena Text: Russian14801363GPT-5.4
LMArena Text: Polish14721366GPT-5.4
LMArena Text: multi-turn14821382GPT-5.4
LMArena Text: longer queries14731365GPT-5.4
LMArena Text: writing and language14581338GPT-5.4
LMArena Text: entertainment and media14381325GPT-5.4
LMArena Vision: English13011202GPT-5.4
LMArena Vision: Chinese13541232GPT-5.4
LMArena Vision: reading text13121204GPT-5.4
LMArena Vision: humor12841161GPT-5.4
LMArena Vision: recognizing things12511141GPT-5.4
LMArena Vision: creative writing12831159GPT-5.4
LMArena Document1471Not measuredOnly GPT-5.4 measured
Neither model has a result on the other 11 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for GPT-5.4 and GPT-5.4 Nano
BenchmarkGPT-5.4GPT-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

GPT-5.4$0.010Fits 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

GPT-5.4$0.170Fits 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

GPT-5.4$0.650Fits 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 GPT-5.4 and GPT-5.4 Nano
SpecificationOpenAI GPT-5.4OpenAI GPT-5.4 Nano
MakerOpenAIOpenAI
WeightsNo public weights listedNo public weights listed
ReleasedMarch 5, 2026March 17, 2026
Context window1.05M400K
Input $/Mtok$2.50$0.20
Output $/Mtok$15.00$1.25
Coding index64.444.8
Independent measurements behind it32
Cost per solved task$1.02$0.14
SourceOpenRouter listingOpenRouter listing

Questions

Is GPT-5.4 better than GPT-5.4 Nano for coding?

Pick GPT-5.4 for coding: it scores 64.4 on the Vibe Coding Index against 44.8 for GPT-5.4 Nano. Pick GPT-5.4 Nano for output tokens 12.0x cheaper ($1.25 vs $15.00 per million) and a lower cost per solved task ($0.14 against $1.02).

Which is cheaper, GPT-5.4 or GPT-5.4 Nano?

GPT-5.4 costs $2.50 per million input tokens and $15.00 per million output tokens; GPT-5.4 Nano costs $0.20 and $1.25. Per solved SWE-bench Verified task, GPT-5.4 costs $1.02 and GPT-5.4 Nano $0.14.

Which has the bigger context window, GPT-5.4 or GPT-5.4 Nano?

GPT-5.4, with 1.05M tokens against 400K.

How many benchmarks is the GPT-5.4 vs GPT-5.4 Nano comparison based on?

77 benchmarks have a result for both models as of October 22, 2026. GPT-5.4'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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