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GPT-5.4 Mini vs GPT-5 Nano

GPT-5.4 Mini leads GPT-5 Nano on the Artificial Analysis Intelligence Index, 24.1 to 13.0, and GPT-5 Nano costs 11.3x less per output token ($0.40 vs $4.50 per million). Updated October 22, 2026; 65 benchmarks have a result for both.

Replace GPT-5.4 Mini Replace GPT-5 Nano
GPT-5.4 MiniOpenAI
Coding
35.8
Overall
44.0
Output $/M
$4.50
63
GPT-5 NanoOpenAI
Coding
No data
Overall
35.6
Output $/M
$0.40
2
vs boards won of 65 shared

GPT-5.4 Mini or GPT-5 Nano: which to pick

Only GPT-5.4 Mini has a coding score, 35.8 on the Vibe Coding Index; GPT-5 Nano has none, so the two cannot be ranked on coding.

Pick GPT-5 Nano for output tokens 11.3x cheaper ($0.40 vs $4.50 per million) and a lower cost per solved task ($0.109 against $0.70).

Model AGPT-5.4 MiniOpenAI35.8/1005 independent benchmarks$0.70 per solved taskModel BGPT-5 NanoOpenAINot benchmarkedNo coding benchmark$0.109 per solved task
Shared results
65
GPT-5.4 Mini only
24
GPT-5 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
GPT-5.4 Mini 35.8 from 5 benchmarks, GPT-5 Nano not benchmarked.
Widest category
Agentic work, 46.8 points apart on average over 1 shared benchmark.
Widest single gap
τ²-Bench Telecom: GPT-5.4 Mini 83.3% against GPT-5 Nano 36.5%, 46.8 points apart on a 0 to 100 scale.
Output price
GPT-5.4 Mini $4.50 against GPT-5 Nano $0.40 per million output tokens, 11.3x apart.
Context window
Both take 400K 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
CategoryGPT-5.4 MiniBarsGPT-5 NanoTies
Coding50
Intelligence20
Agentic work10
Reasoning141
Math70
Knowledge81
General260
All shared boards632
CodingLike-for-likeSix of these boards feed the Vibe Coding Index50
Coding benchmarks for GPT-5.4 Mini and GPT-5 Nano
BenchmarkGPT-5.4 MiniGPT-5 NanoLeader
SWE-bench VerifiedNot measured34.8%Only GPT-5 Nano measured
LMArena WebDev1397Not measuredOnly GPT-5.4 Mini measured
AA Coding Index56.1Not measuredOnly GPT-5.4 Mini measured
LiveCodeBench (Vals AI)81.5%70.2%GPT-5.4 Mini
SWE-bench Verified (Vals AI)73.0%Not measuredOnly GPT-5.4 Mini measured
Terminal-Bench 4 (Vals AI)2.5%Not measuredOnly GPT-5.4 Mini measured
Vibe Code Bench (Vals AI)48.0%Not measuredOnly GPT-5.4 Mini measured
Code migration (Vals AI)12.9%Not measuredOnly GPT-5.4 Mini measured
ProgramBench (Vals AI)0.0%Not measuredOnly GPT-5.4 Mini measured
Terminal-Bench 2.1 (Vals AI)54.7%Not measuredOnly GPT-5.4 Mini measured
LiveCodeBench (Artificial Analysis run)Not measured78.9%Only GPT-5 Nano measured
SciCode52.1%Not measuredOnly GPT-5.4 Mini measured
Terminal-Bench Hard (Artificial Analysis run)52.3%17.4%GPT-5.4 Mini
Terminal-BenchNot measured21.8%Only GPT-5 Nano measured
FrontierCode27.0%Not measuredOnly GPT-5.4 Mini measured
WeirdML60.3%38.1%GPT-5.4 Mini
ALE-Bench1188.6Not measuredOnly GPT-5.4 Mini measured
LMArena Text: coding14381351GPT-5.4 Mini
LMArena Text: software and IT14361345GPT-5.4 Mini
LMArena WebDev: React1386Not measuredOnly GPT-5.4 Mini measured
LMArena WebDev: HTML1419Not measuredOnly GPT-5.4 Mini 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 Mini and GPT-5 Nano
BenchmarkGPT-5.4 MiniGPT-5 NanoLeader
AA Intelligence Index24.113.0GPT-5.4 Mini
Epoch Capabilities Index148.7139.2GPT-5.4 Mini
Agentic workLike-for-likePublic boards, shown as published, kept out of the index10
Agentic work benchmarks for GPT-5.4 Mini and GPT-5 Nano
BenchmarkGPT-5.4 MiniGPT-5 NanoLeader
AA Agentic Index17.9Not measuredOnly GPT-5.4 Mini measured
Finance Agent (Vals AI)45.4%Not measuredOnly GPT-5.4 Mini measured
Tax Agent Bench (Vals AI)8.8%Not measuredOnly GPT-5.4 Mini measured
Legal Research Bench (Vals AI)12.5%Not measuredOnly GPT-5.4 Mini measured
Excel Modeling Benchmark (Vals AI)45.4%Not measuredOnly GPT-5.4 Mini measured
τ²-Bench Telecom83.3%36.5%GPT-5.4 Mini
DeepResearch Bench36.3%Not measuredOnly GPT-5.4 Mini measured
Berkeley Function Calling Leaderboard (BFCL)Not measured51.4%Only GPT-5 Nano measured
Neither model has a result on the other 33 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index141
Reasoning benchmarks for GPT-5.4 Mini and GPT-5 Nano
BenchmarkGPT-5.4 MiniGPT-5 NanoLeader
GPQA Diamond83.1%63.4%GPT-5.4 Mini
MMMU Pro (Vals AI)79.3%70.9%GPT-5.4 Mini
GPQA Diamond (Artificial Analysis run)87.5%67.6%GPT-5.4 Mini
Humanity's Last Exam (Artificial Analysis run)28.1%9.5%GPT-5.4 Mini
GPQA Diamond (Epoch AI run)86.9%69.4%GPT-5.4 Mini
ARC-AGI63.7%20.7%GPT-5.4 Mini
ARC-AGI-218.9%2.6%GPT-5.4 Mini
Chess puzzles23.0%22.0%GPT-5.4 Mini
Mystery game puzzles11.0%9.0%GPT-5.4 Mini
VPCTNot measured37.2%Only GPT-5 Nano measured
LMArena Text: hard prompts14241328GPT-5.4 Mini
LMArena Text: expert14351321GPT-5.4 Mini
LMArena Text: hard prompts in English14201338GPT-5.4 Mini
LMArena Vision: diagrams12661141GPT-5.4 Mini
LMArena Vision: homework12851157GPT-5.4 Mini
Kagi LLM Benchmark37.9%62.2%GPT-5 Nano
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 Mini and GPT-5 Nano
BenchmarkGPT-5.4 MiniGPT-5 NanoLeader
AIME95.6%81.2%GPT-5.4 Mini
MATH 500 (Vals AI)Not measured93.8%Only GPT-5 Nano measured
MGSM (Vals AI)Not measured89.3%Only GPT-5 Nano measured
AA Math IndexNot measured83.7Only GPT-5 Nano measured
AIME 2025 (Artificial Analysis run)Not measured83.7%Only GPT-5 Nano measured
OTIS Mock AIME88.9%81.1%GPT-5.4 Mini
FrontierMath, tiers 1 to 351.2%20.0%GPT-5.4 Mini
FrontierMath, tier 49.8%2.4%GPT-5.4 Mini
ProofBench21.0%12.0%GPT-5.4 Mini
MATH level 5Not measured95.2%Only GPT-5 Nano measured
LMArena Text: math14181317GPT-5.4 Mini
LMArena Text: mathematical work14291326GPT-5.4 Mini
Neither model has a result on the other 1 board here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index81
Knowledge benchmarks for GPT-5.4 Mini and GPT-5 Nano
BenchmarkGPT-5.4 MiniGPT-5 NanoLeader
MMLU Pro84.5%76.1%GPT-5.4 Mini
LegalBench (Vals AI)Not measured50.1%Only GPT-5 Nano measured
CaseLaw (Vals AI)51.7%52.6%GPT-5 Nano
CorpFin (Vals AI)60.9%Not measuredOnly GPT-5.4 Mini measured
TaxEval (Vals AI)71.2%67.4%GPT-5.4 Mini
MortgageTax (Vals AI)63.5%53.6%GPT-5.4 Mini
MedQA (Vals AI)Not measured93.3%Only GPT-5 Nano measured
MedCode (Vals AI)Not measured30.4%Only GPT-5 Nano measured
MMLU Pro (Artificial Analysis run)Not measured78.0%Only GPT-5 Nano measured
SimpleQA Verified29.4%11.7%GPT-5.4 Mini
LMArena Text: science14171318GPT-5.4 Mini
LMArena Text: medicine and healthcare13951335GPT-5.4 Mini
LMArena Text: legal and government14141298GPT-5.4 Mini
LMArena Text: business and finance14181311GPT-5.4 Mini
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 GPT-5.4 Mini and GPT-5 Nano
BenchmarkGPT-5.4 MiniGPT-5 NanoLeader
Design Arena: websitesNot measured1101Only GPT-5 Nano measured
Design Arena: UI componentsNot measured1064Only GPT-5 Nano measured
Design Arena: game devNot measured1044Only GPT-5 Nano measured
Design Arena: data vizNot measured1056Only GPT-5 Nano measured
Design Arena: 3DNot measured965Only GPT-5 Nano measured
Design Arena: all code categoriesNot measured1084Only GPT-5 Nano measured
Neither model has a result on the other 3 boards here
GeneralLike-for-likePublic boards, shown as published, kept out of the index260
General benchmarks for GPT-5.4 Mini and GPT-5 Nano
BenchmarkGPT-5.4 MiniGPT-5 NanoLeader
SAGE (Vals AI)50.8%30.4%GPT-5.4 Mini
MedScribe (Vals AI)Not measured72.9%Only GPT-5 Nano measured
Vals Multimodal Index54.2%Not measuredOnly GPT-5.4 Mini measured
IFBench73.3%67.6%GPT-5.4 Mini
Long context reasoning (AA-LCR)77.0%45.0%GPT-5.4 Mini
DTBench80.0%62.7%GPT-5.4 Mini
LMCA40.8%7.9%GPT-5.4 Mini
Fiction.LiveBenchNot measured44.4%Only GPT-5 Nano measured
LMArena Text14121320GPT-5.4 Mini
LMArena Text: instruction following14051306GPT-5.4 Mini
LMArena Text: creative writing13701249GPT-5.4 Mini
LMArena Vision12451159GPT-5.4 Mini
LMArena Text: English14121321GPT-5.4 Mini
LMArena Text: non-English14051313GPT-5.4 Mini
LMArena Text: Chinese14461356GPT-5.4 Mini
LMArena Text: German14081327GPT-5.4 Mini
LMArena Text: Japanese13751227GPT-5.4 Mini
LMArena Text: Korean13701269GPT-5.4 Mini
LMArena Text: French1441Not measuredOnly GPT-5.4 Mini measured
LMArena Text: Spanish14051360GPT-5.4 Mini
LMArena Text: Russian14171296GPT-5.4 Mini
LMArena Text: Polish14151314GPT-5.4 Mini
LMArena Text: multi-turn14291311GPT-5.4 Mini
LMArena Text: longer queries14081312GPT-5.4 Mini
LMArena Text: writing and language13931283GPT-5.4 Mini
LMArena Text: entertainment and media13731268GPT-5.4 Mini
LMArena Vision: English12441170GPT-5.4 Mini
LMArena Vision: Chinese12861176GPT-5.4 Mini
LMArena Vision: reading text12531152GPT-5.4 Mini
LMArena Vision: humor12351110GPT-5.4 Mini
LMArena Vision: recognizing things1218Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: creative writing1222Not measuredOnly GPT-5.4 Mini measured
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 GPT-5.4 Mini and GPT-5 Nano
BenchmarkGPT-5.4 MiniGPT-5 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 Mini$0.0030Fits in one request
GPT-5 Nano$0.0003Fits in one request

GPT-5 Nano costs less

Repository review

50K input + 3K output tokens

GPT-5.4 Mini$0.051Fits in one request
GPT-5 Nano$0.0037Fits in one request

GPT-5 Nano costs less

Agent loop

200K input + 10K output tokens

GPT-5.4 Mini$0.195Fits in one request
GPT-5 Nano$0.014Fits in one request

GPT-5 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 Mini and GPT-5 Nano
SpecificationOpenAI GPT-5.4 MiniOpenAI GPT-5 Nano
MakerOpenAIOpenAI
WeightsNo public weights listedNo public weights listed
ReleasedMarch 17, 2026August 7, 2025
Context window400K400K
Input $/Mtok$0.75$0.05
Output $/Mtok$4.50$0.40
Coding index35.8Not benchmarked
Independent measurements behind it50
Cost per solved task$0.70$0.109
SourceOpenRouter listingOpenRouter listing

Questions

Is GPT-5.4 Mini better than GPT-5 Nano for coding?

Only GPT-5.4 Mini has a coding score, 35.8 on the Vibe Coding Index; GPT-5 Nano has none, so the two cannot be ranked on coding. Pick GPT-5 Nano for output tokens 11.3x cheaper ($0.40 vs $4.50 per million) and a lower cost per solved task ($0.109 against $0.70).

Which is cheaper, GPT-5.4 Mini or GPT-5 Nano?

GPT-5.4 Mini costs $0.75 per million input tokens and $4.50 per million output tokens; GPT-5 Nano costs $0.05 and $0.40. Per solved SWE-bench Verified task, GPT-5.4 Mini costs $0.70 and GPT-5 Nano $0.109.

Which has the bigger context window, GPT-5.4 Mini or GPT-5 Nano?

Neither: both take 400K tokens.

How many benchmarks is the GPT-5.4 Mini vs GPT-5 Nano comparison based on?

65 benchmarks have a result for both models as of October 22, 2026. GPT-5.4 Mini's coding index rests on 5 independent benchmarks and GPT-5 Nano's on 0. Where only one model has a result, the page says so instead of naming a winner.

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